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Attila
Joined: 24 Feb 2007 Posts: 57849 Location: Hungary
Expire: 2025-11-18
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Posted: Sun Nov 04, 2007 1:49 am Post subject: |
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Attila wrote:
I not mixed with Nikon, I thought not to easy to connect an adapter inside into the bajonet instead of connect onto the bajonet, but seems not a problem many of you say this is fine. _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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xtriky
Joined: 05 Nov 2007 Posts: 17 Location: Oklahoma, US
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Posted: Tue Nov 06, 2007 12:33 am Post subject: |
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xtriky wrote:
Orio wrote: |
I would be more careful in not damaging the lenses if they are worth more than 100 Euros. You can always have the camera repaired by any Pentax service, while once the lens is screwed up by improper surgery, it is trash, and old manual lenses are not easily replaced because they are not in production anymore.
Also it is my opinion that we should respect these old lenses and modify them only if absolutely necessary.
- |
Long time reader, first time poster. I am the one who did the lens mount swapping approach for C/Y Yashica ML and P/K. This method is easy to do and totally reversible. It takes about 5 mins to unscrew and srew the mount flanges back to each lens to bring them back to the original state. I have no idea about the possbility to do the same thing on CZ C/Y lenses because I don't have any of them to experiment.
I also mount old Nikkors directly to my K10D. Everything works fine, no problem at all. Infinity focus is just as other P/K lenses. This should due to the small difference in register distance of P/K and Nikon F mount systems. For small lenses (mine is Nikkor-O 2/35), they can stay firmly on the K10D even though not being locked. For big lenses (Vivitar Series 1 70-210 f3.5), I did the mount swapping method as for C/Y lenses and the problem is gone. A small problem is that the lens will focus beyond infinity (just a little bit).
I think the following lens mounts can be potentially fitted on P/K (45.46mm): M42 (45.46mm) (for sure, easy and perfect), C/Y (45.5mm), Olympus OM (46mm), Nikon F (46.5mm) and Leica R (47mm). I am looking for some cheap OM and Leica R lenses to see how they work on my K10D.
As an ex-owner of Canon 300D/350D/400D, I have to say that Pentax K100D/10D outperfroms the Canon Rebel xxD regarding their usage with manual lenses. Yeah, Canon takes advantage of having more choices for manual lenses but the options for P/K above are quite enough for me by now.
To anyone who doesn't know yet: The metering problem of K10D with pre-A lenses can be fixed by changing the factory focusing sreen to the one of istD model. I haven't done it yet but lots of people confirmed that it worked perfectly. |
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Attila
Joined: 24 Feb 2007 Posts: 57849 Location: Hungary
Expire: 2025-11-18
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Posted: Tue Nov 06, 2007 12:36 am Post subject: |
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Attila wrote:
Welcome to aboard! Hopefully you will share more from your experience! Thank you for your first post! Please fill your location! _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Tue Nov 06, 2007 12:40 am Post subject: |
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Orio wrote:
xtriky wrote: |
To anyone who doesn't know yet: The metering problem of K10D with pre-A lenses can be fixed by changing the factory focusing sreen to the one of istD model. I haven't done it yet but lots of people confirmed that it worked perfectly. |
Same here with the EOS 5D, after having installed the Ee-s optional screen for manual lenses, the metering is close to perfect.
With the standard screen, it was a tragedy.
I wonder of what kind of crap they are selling us with the standard screens.
But hey standard screens are for crappy autofocus so thinking twice, screens must be crappy also _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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Jesito
Joined: 24 Aug 2007 Posts: 5745 Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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Posted: Tue Nov 06, 2007 5:32 am Post subject: |
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Jesito wrote:
Abbazz wrote: |
As mentioned at the beginning of this thread, the Pentax K10d not only allows me to mount M42 lenses easily, but it also allows me to use image stabilization and AF focus confirmation right out of the box (no need for these "chipped" adapters like on my Canon).
Except for wide angles, I always switch to my K10d when I plan to use M42 or Tamron Adaptall lenses, because it is much more usable than a Canon with these lenses. On the Pentax, all the Tamron Adaptall lenses perform exactly like native Pentax KA lenses, with the all the auto-exposure modes available and the control of the aperture on the camera body. And with the help of the 1.7x AF adapter, my Tamron Adaptall 300/2.8 and 180/2.5 turn magically into multimegabucks superfast autofocus lenses...
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Hi Abbazz!
Would this apply as well to the K110D?. There is a rebate on a large local retailer and they are selling the K110D with a 18-55 lens by 379,00 €. I was looking for an Oly E-300 second hand, but prices are going up to around 300€, so a K110d could be an alternative. All my lenses (but three of them) are M42, and I got a C/Y and two Adaptall-2 Tamrons, so your description has raised nice expectatives to me...
Best regards,
Jes. _________________ Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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Abbazz
Joined: 23 Jun 2007 Posts: 1098 Location: Jakarta
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Posted: Tue Nov 06, 2007 9:53 am Post subject: |
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Abbazz wrote:
Jesito wrote: |
Would this apply as well to the K110D? |
Jes,
I have never tried the K110D, so I cannot guarantee it will work in the same manner as the K10D with manual focus lenses. However, I see no reason why it shouldn't, with the exception of the image stabilization feature (Antishake in Pentax jargon), which the K110D is lacking.
With an M42 to PK adapter ($15 to 30), you will be able to use all your M42 lenses, present and future, in aperture priority mode (Av) with AF confirmation. Not bad...
Your Tamron lenses will behave exactly as Pentax "A" lenses with the help of a Tamron PK/A Adaptall-2 ring. This adapter is not really rare, but it is highly sought after on eBay, leading to insane prices (> $100). However, I suggest you buy an old Tamron zoom from a thrift shop for a few dollars with the precious PK/A ring attached. That's why I have now three copies of the 80-210/3.8-4 zoom -- a rather good lens, but almost no resell value on the market... Please note that the more common PK/M adapter will make your lenses behave like Pentax "K" or "M" lenses, without the ability to control the lens aperture from the camera.
For the C/Y lens, please refer to the links provided by Niblue earlier in this thread.
Cheers!
Abbazz _________________ Il n'y a rien dans le monde qui n'ait son moment decisif, et le chef-d'oeuvre de la bonne conduite est de connaitre et de prendre ce moment. - Cardinal de Retz
The 6x9 Photography Online Resource:
http://artbig.com/ |
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Jesito
Joined: 24 Aug 2007 Posts: 5745 Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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Posted: Tue Nov 06, 2007 10:13 am Post subject: |
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Jesito wrote:
Abbazz wrote: |
With an M42 to PK adapter ($15 to 30), you will be able to use all your M42 lenses, present and future, in aperture priority mode (Av) with AF confirmation. Not bad...
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Hi Abbazz,
That's what most appeals me. (I can live without image stabilization, I'm used to, but the AF confirmation would be very useful).
Thanks for the feeback!.
Best regards,
Jes. _________________ Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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xtriky
Joined: 05 Nov 2007 Posts: 17 Location: Oklahoma, US
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Posted: Tue Nov 06, 2007 10:13 am Post subject: |
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xtriky wrote:
I had a K110D before upgrading to K10D so I can confirm that K110D works in the same manner with MF lenses as K10D (except for SR feature). A good thing about K110D is that it does not have metering problem with pre-A lens like K10D has. Thus, my advice is "go for it". |
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Jesito
Joined: 24 Aug 2007 Posts: 5745 Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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Posted: Tue Nov 06, 2007 11:33 am Post subject: |
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Jesito wrote:
Thanks niblue and xtriki for the advice!.
I'll give a walk to the shopping center where I saw the K110D offer, to see if the have any *1st, and to what price.
Best regards,
Jes. _________________ Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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TDN
Joined: 26 Mar 2007 Posts: 321 Location: Belgium
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Posted: Tue Nov 06, 2007 12:06 pm Post subject: |
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TDN wrote:
niblue wrote: |
I don't think I've tried the AF confirmation with the M42 lenses on the *istDS yet so I'll need to try that to confirm it works (I've definitely used it on at least one of the bodies where it was working great however I couldn't put my hand on heart and say for sure it was the *istDS, the K10D or both). |
AF confirm will work on the *ist series. It does on my DL
Veyr interesting about those Nikkors, I will experiment with that. Old Nikon glass is often cheaper than the Pentax equivalent, prices have gone up lately for Pentax...
Tom _________________ ---
TDN - tdn9.be
---
SLR: Nikon EM , Pentax K2 DMD, K1000, MZ-5
DSLR: Pentax K10D
Lenses (Nikon): E-series 1.8 50mm & 100mm f2.8; Tokina RMC 80-200mm f4
Lenses (Pentax): Pentax 17mm f4.0 Fish-eye; Pentax-A 50mm f1.7; Kiron 105mm f2.8 macro; Pentax-FA 50mm f1.4; Pentax-A 35-135mm f3.5-4.5; Sigma 28-70mm f2.8 EX Aspherical; DA 18-55mm f3.-5.6; Tamron 28-200mm f3.8-5.6 XR;
Lenses (M42): Jupiter-9 85mm f2; Pentacon 200mm f4;
Lenses (Adaptall): Tamron SP 60-300mm f3.8-5.6; Tamron SP 80-200mm f2.8 LD |
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montecarlo
Joined: 04 Apr 2007 Posts: 1865 Location: Romania
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Posted: Tue Nov 06, 2007 12:42 pm Post subject: Samsung GX - 1 S / L |
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montecarlo wrote:
Hello,
If you find instead a Samsung GX-1L or GX-1S its ok too (and at a good price). They are I think, IDENTICAL with Pentax *ist DL2 and Pentax *ist Ds2.
http://www.letsgodigital.org/en/camera/review/113/page_1.html
http://www.steves-digicams.com/2006_reviews/gx1l.html
http://www.dcresource.com/reviews/samsung/digimax_gx1s-review/index.shtml
and the Pentax
http://www.dcresource.com/reviews/cameraDetail.php?cam=768 _________________ Canonet QL17 III
Zenit E , Helios-44 58mm f:2.0 , Tair-11A 135mm f:2.8, Jupiter-9 85mm f:2.0,
Carl Zeiss Jena Flektogon 35mm f:2.4
Pentax MX, ME Super, Chinon CE4/CM4, Petri MC 28mm f:2, smc Pentax-M 50mm f:1.7, Soligor T 135mm f:2.8
Minolta X500, Tokina 28/2.8, Rokkor 50/1.7, 80-205/4.5
Nikon D90, Nikkor 35/2.0, Nikkor 50/1.8, Sigma 24/2.8, Nikkor 18-105 VR |
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Abbazz
Joined: 23 Jun 2007 Posts: 1098 Location: Jakarta
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Posted: Tue Nov 06, 2007 1:00 pm Post subject: |
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Abbazz wrote:
TDN wrote: |
Veyr interesting about those Nikkors, I will experiment with that. Old Nikon glass is often cheaper than the Pentax equivalent, prices have gone up lately for Pentax... |
Tom,
If you want to experiment without breaking the bank, get the Nikkor-H (or HC for the multicoated version) 50/2. That's one of the best Nikon lenses and one of the cheapest too. See this thread: http://forum.mflenses.com/viewtopic.php?t=2702
Cheers!
Abbazz _________________ Il n'y a rien dans le monde qui n'ait son moment decisif, et le chef-d'oeuvre de la bonne conduite est de connaitre et de prendre ce moment. - Cardinal de Retz
The 6x9 Photography Online Resource:
http://artbig.com/ |
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Jesito
Joined: 24 Aug 2007 Posts: 5745 Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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Posted: Tue Nov 06, 2007 1:16 pm Post subject: Re: Samsung GX - 1 S / L |
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Jesito wrote:
Thanks Cosmin, added to the list...
Best regards.
Jes. _________________ Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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xtriky
Joined: 05 Nov 2007 Posts: 17 Location: Oklahoma, US
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Posted: Mon Nov 26, 2007 4:18 am Post subject: |
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xtriky wrote:
Some updates on lens mount conversion:
I did successfully convert Yashica ML and Olympus OM lenses into P/K mount by using the Fotodiox M42->P/K adapter (the one with flange). All converted lenses will fit, stay locked and have perfect infinity focus on my K10D.
So far, I am able to use my K10D with the following lens systems: M42, P/K MF&AF, Nikon-F, Contax/Yashica and Olympus OM. My next target should be Leica R but the only problem is the price of Leica ::sigh:: Hope that I will be lucky enough to get a cheap Leica R lens for my experiment |
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Attila
Joined: 24 Feb 2007 Posts: 57849 Location: Hungary
Expire: 2025-11-18
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Posted: Mon Nov 26, 2007 2:01 pm Post subject: |
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Attila wrote:
This is good news for many Pentax owner, thank you for sharing! _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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xtriky
Joined: 05 Nov 2007 Posts: 17 Location: Oklahoma, US
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Posted: Wed Dec 26, 2007 7:41 pm Post subject: |
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xtriky wrote:
Update: I just did some modification to fit the CZ Planar T* 50/1.7 into K10D. For more detail, please see here http://forum.manualfocus.org/viewtopic.php?id=8924 |
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poilu
Joined: 26 Aug 2007 Posts: 10471 Location: Greece
Expire: 2019-08-29
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Posted: Wed Dec 26, 2007 7:57 pm Post subject: |
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poilu wrote:
cheer xtricky, wonderful job
nice project for the contax 50 1.7 of Jes _________________ T* |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Wed Dec 26, 2007 8:20 pm Post subject: |
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Orio wrote:
I can answer your question: there is no "Made in Germany" version of the 1.7/50 Planar and neither of the 1.4/50 Planar. Both lenses have been only assembled in Japan.
As for the "Made in Japan vs. Made in Germany" issue, I have enough experience on Contax lenses now, to tell you that this is just fantasies. There is only one difference that counts, that is, between AE and MM models, because some of the Contax lenses have been optically improved in occasion of the launch of the MM system. These lenses include at least the Distagon 2.8/25, Distagon 2.8/28 and Sonnar 2.8/135, which are verified - but may also include other models for which there is no official verification.
I had the possibility to test head-to-head two Sonnars 2.8/85, both AE version, one Germany one Japan, and the difference between the two was so minimal, to be considered absolutely negligible and well within the unavoidable tolerance limit of the difference between two physical objects that were, still, largely hand-made.
As for your Planar 1.7/50 being a bad copy, everything is possible, especially if the lens was opened and not properly reassembled by a previous owner. The quality control at Zeiss is so good that it's really unlikely that you may have gotten a copy that was poor quality since the factory release. I think it's more likely (or less unlikely if you prefer) that your manipulation of the lens might be the cause somehow.
- _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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xtriky
Joined: 05 Nov 2007 Posts: 17 Location: Oklahoma, US
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Posted: Thu Dec 27, 2007 12:24 am Post subject: |
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xtriky wrote:
Orio, thanks for your answer. As you see from the description, my modification has minimal to no effect to the glass. Anyway I will open and clean the lens somehow. |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Dec 27, 2007 12:36 am Post subject: |
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Orio wrote:
xtriky wrote: |
Orio, thanks for your answer. As you see from the description, my modification has minimal to no effect to the glass. Anyway I will open and clean the lens somehow. |
I'm not sure about this xtricky. As you know, lenses are precision objects that are carefully calibrated to give optimal performance. Very expensive measuring instruments are used for this task, which means, this is not something that can be done "at spans".
I had a mail exchange with a Zeiss engineer a little time ago, and he explained me that Zeiss calibrates the lenses at infinity focus - which is also the focal point all MTF tests for lenses are made by Zeiss.
Based on what you wrote, you have shifted the position of the helicoid for this lens. Thus, shifting all focusing positions beyond the original calibration, in order to reach infinity focus. But Zeiss did not create the lens to be calibrated this way.
I am not a technician, but I would bet some that this has an impact of performance. All lenses, except for those who have floating elements, do perform differently at different focal points. Your Planar is now not calibrated as it ideally should. So a little loss in performance is, in my opinion, plausible.
- _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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xtriky
Joined: 05 Nov 2007 Posts: 17 Location: Oklahoma, US
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Posted: Thu Dec 27, 2007 2:13 am Post subject: |
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xtriky wrote:
Very good point, Orio. I did not think about it at all. I learn so much from you. However, in order to test this "hypothesis" I need somebody have the CZ 50/1.7 and mod it the same way as I do. Then please make some sharpness test and report the result. I still believe that I got a bad copy. |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Dec 27, 2007 2:28 am Post subject: |
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Orio wrote:
xtriky wrote: |
Very good point, Orio. I did not think about it at all. I learn so much from you. However, in order to test this "hypothesis" I need somebody have the CZ 50/1.7 and mod it the same way as I do. Then please make some sharpness test and report the result. I still believe that I got a bad copy. |
Mine are just guesses, xtriky, so my advice is to not learn from me . If you like, you can write to Zeiss (www.zeiss.de) and ask. A technician will reply, they are very responsive.
Bad copies may happen of course. But sincerely, I have bought 25 Contax lenses and I can not say that I have ever met one bad copy. So either I am extremely lucky, or, bad Contax copies are extremely rare. I personally believe that with the kind of quality control Zeiss has, a bad copy is certainly the result of some unadequate user action - or accident. You don't know the previous owners of this lens, so anything might have happened with it.
I don't know the Takumar 55 (I have the SMC 1.4/50) and the Zuiko, but I know enough about the Yashica ML 1.4/50 to be sure that it can not be superior to the Planar 1.7/50, because reviewers rate the Yashica 1.4/50 inferior in performance to the Yashica 1.7/50, which in turn was tested against the Planar 1.7/50 and the Planar gave a better performance. Of course this is not undisputable truth and I don't have the links for that test anymore, but what I am trying to say is that if the Planar performs worse than the Zuiko or Takumar, that might be also normal - but if it performs worse than the Yashica 1.4/50, then there is surely something wrong with the Planar.
Here's some pictures I took in the last days with my Planar 1.7/50:
On 400D:
On 400D:
On 400D, wide open:
On 400D:
http://www.oriofoto.net/temp/gchoir2007_a/slides/gchoir2007_20.html
On 400D:
http://www.oriofoto.net/temp/gchoir2007_a/slides/gchoir2007_21.html
On 400D:
http://www.oriofoto.net/temp/gchoir2007_a/slides/gchoir2007_22.html
Of course these are resizes so they can not show the real sharpness, but they should be detailed enough to let you guess that behind, there is a really sharp lens.
- _________________ Orio, Administrator
T*
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xtriky
Joined: 05 Nov 2007 Posts: 17 Location: Oklahoma, US
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Posted: Sun Dec 30, 2007 4:40 pm Post subject: |
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xtriky wrote:
I really appreciate Orio for his help. I did open and clean the Zeiss 50/1.7 and remounted it @ 4 o'clock position. And it show some improvement in sharpness but still not at the level of Orio's copy However, I am busy doing another lens conversion project and don't have much time to play around with that Zeiss for further investigation.
This is my current project: convert Canon FL 85mm 1.8 to P/K mount. For detail please take a look here http://forum.manualfocus.org/viewtopic.php?pid=75209#p75209 |
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kuuan
Joined: 14 Jan 2008 Posts: 4572 Location: right now: Austria
Expire: 2014-12-26
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Posted: Wed Jan 30, 2008 12:00 am Post subject: photo of M42 adapter mounted on Pentax body |
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kuuan wrote:
just for the record, this is how a Pentax M42 - K mount adapter fits into the K-mount of a Pentax SLR body
( here on a Pentax ME Super, but of course the fit is the same on dSLR Pentax ) _________________ my photos on flickr: https://www.flickr.com/photos/kuuan/collections |
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nemesis101
Joined: 25 Mar 2008 Posts: 2050 Location: Oregon USA
Expire: 2015-01-22
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Posted: Tue Mar 25, 2008 7:35 am Post subject: Pentax K10D with almost any lens! |
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nemesis101 wrote:
hacksawbob wrote: |
You mean you can mount M42 lenses AND use IS with them! why am I wasting my time with canon! |
I have a K10D (and soon I hope the K20D) and as long as I can get a lens to fit - and every K mount lens will, as will Canon, Nikon, Olympus and most others with an adapter, let alone my growing collection of SP Adaptalls, then I have Image Stabilisation for all! I understand that IS 'in lens' has its proponents, and as a Canon user of 30 years I would not care to deride their kit, but having every lens I use image stabilised, given my aged shaky hands, is a real boon! Now with live view as well on the K20D I may even be able to focus too? lol
MF Lenses:
Olympus 1.2 50mm Zuiko prime
Tamron Adaptall 2 SP 70-210 3.5 (Wonderful but very heavy!)
Tamron Adaptall 2 70-210 158A (As light as the other is heavy!)
Tamron Adaptall 2 80-210 103A (Middleweight!)
Tamron SP 2x Adapter (2 off)
Sears 70-210 F4 (A fair zoom for pennies!)
Sears 135mm 2.8 (quite good for 6 dollars off e-bay?)
Pentax-A 50mm F2 Prime
Super Takumar 135
Super Takumar 200 |
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