| View previous topic :: View next topic |
| Author |
Message |
montecarlo
Joined: 04 Apr 2007
Posts: 1865
Location: Romania
|
 Posted: Wed Oct 31, 2007 9:37 pm Post subject: Pentax-DA (18-55) lens on a full frame camera |
 |
|
montecarlo wrote:
Hello,
Some test with the "new" Pentax P50 on which I mount a DA Pentax lens (18-55 kit lens), so its a lens designated for APS-C sensors. Vigneting is present from about 18mm till ~24mm. Even if the DA has no diaphragm ring the camera can control it when P exposure mode is used.
Here are some samples of a Kodak ProFoto 100 roll I used :
(c) Cosmin Munteanu
(c) Cosmin Munteanu
(c) Cosmin Munteanu
(c) Cosmin Munteanu
(c) Cosmin Munteanu
(c) Cosmin Munteanu
_________________
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 |
|
| Back to top |
|
 |
Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
|
| Posted: Sun Jan 13, 2008 9:53 am Post subject: |
|
|
Jesito wrote:
Hi Cosmin, I missed this thread before...
Nice experiment!.
This lens is not so bad as reported at the forums. The fact of being part of a cheap kit says nothing about it's quality, that for me is far better than the Canon 18-55 kit.
Letting apart the vignetting, the tunnel shot is very nice!.
I know you have also a K100D, how are your experiences with old mflenses?.
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 |
|
| Back to top |
|
|
LucisPictor
Joined: 26 Feb 2007
Posts: 17633
Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
|
| Posted: Sun Jan 13, 2008 11:53 am Post subject: |
|
|
LucisPictor wrote:
That's an interesting experiment. (But Canon users should be careful, the EF-S mount is different from the EF mount!)
I tried that with my Tokina 4/12-24, this lens can be mount at a FF or film cam and it show vignetting only up to 18mm, so it can be used as a 19mm lens at a FF.
_________________
Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator 
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
|
| Back to top |
|
|
montecarlo
Joined: 04 Apr 2007
Posts: 1865
Location: Romania
|
| Posted: Sun Jan 13, 2008 9:21 pm Post subject: |
|
|
montecarlo wrote:
| Jesito wrote: |
...
I know you have also a K100D, how are your experiences with old mflenses?.
... |
Hello,
Well , with M42 lenses I have to compensate between +0.3 and +1 (may be +1.3) in order to achieve good exposure. It tends to underxpose. The measure is made stopped down.
With K Pentax lens (plain K, no KA) you mount the lens and you'll have an open aperture no metter the f stop selected on the lens. Before taking the shot, wou push the AE-L button at the back anf the camera closes the diaphragm, makes the light reading and memorise the data the opens the diaphragm back. The reading is more accurate (seama a you need a little -0.3 may be -0.5 because it overexposes, but I didn't econter this in all situations).
With KA Pentax mount lenses youl'll have nothing to worry about. Its exactly like with AF lenses just without the AF thing.
Hope I helped a little.
Cosmin.
_________________
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 |
|
| Back to top |
|
|
montecarlo
Joined: 04 Apr 2007
Posts: 1865
Location: Romania
|
| Posted: Mon Jan 14, 2008 10:04 am Post subject: |
|
|
montecarlo wrote:
One more thing: you must enable in the manu the using of lenses with diaphragm ring. That's important.
Of course, the manual is the best guide. 
_________________
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 |
|
| Back to top |
|
|
Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
|
| Posted: Mon Jan 14, 2008 1:56 pm Post subject: |
|
|
Jesito wrote:
Thanks a lot Cosmin!, that's the rough guides I needed. It seems that my M42 adapter is not adequate, so I'm in the process of getting a new one.
Mine seems to connect some of the pins at the camera, so once installed, I only get an erratic behaviour on just Av mode. (Changing the dial seems not to affect the selection).
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 |
|
| Back to top |
|
|
montecarlo
Joined: 04 Apr 2007
Posts: 1865
Location: Romania
|
| Posted: Tue Jan 15, 2008 10:04 am Post subject: |
|
|
montecarlo wrote:
If the adaptor is tis or like this http://www.bdimitrov.de/kmp/lenses/adapters/screw.jpg (there are more makes: Pentax, Kood, Hama, Kalt, etc... or just "no-name" ones) than it sould work. When using M42 lens on Av mode, the camera will change the exposure time and the diaphragm mub be turned on M (I think Helios-44M... lenses don't have one, so can be used only wide open - on a similar Zenitar 50mm I tooked out a spring from the mechanism of the lens and "transformed" the lens into a permanent M lens from a permanent A one). I think you might need a +0.5 may be even +1 compensation to make in order to acheve a good exposure (thants my case). If you use M mode, the dial on the back changes the shutter speed.
_________________
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 |
|
| Back to top |
|
|
Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
|
| Posted: Tue Jan 15, 2008 1:49 pm Post subject: |
|
|
Jesito wrote:
| montecarlo wrote: |
| If the adaptor is tis or like this http://www.bdimitrov.de/kmp/lenses/adapters/screw.jpg (there are more makes: Pentax, Kood, Hama, Kalt, etc... or just "no-name" ones) than it sould work. When using M42 lens on Av mode, the camera will change the exposure time and the diaphragm mub be turned on M (I think Helios-44M... lenses don't have one, so can be used only wide open - on a similar Zenitar 50mm I tooked out a spring from the mechanism of the lens and "transformed" the lens into a permanent M lens from a permanent A one). I think you might need a +0.5 may be even +1 compensation to make in order to acheve a good exposure (thants my case). If you use M mode, the dial on the back changes the shutter speed. |
I see, mine is 2mm thick over the body, whilst yours fits at the body level. That makes a difference  ...
Thanks for such detailed info, yesterday I configured properly the camera. Today a friend of mine will lend me (hopefully) one of those original Pentax adapters and hope to be able to try it finally.
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 |
|
| Back to top |
|
|
montecarlo
Joined: 04 Apr 2007
Posts: 1865
Location: Romania
|
| Posted: Tue Jan 15, 2008 2:04 pm Post subject: |
|
|
montecarlo wrote:
When taking off the lens, first hold the camera with the lens down , unscrew the lens , on the left of the mount/adapter, you'll se the little piece/spring of metal. With you finger nail or with the tool sold together with the adapter, push the little piese of metal towards the adapter and in the same time, turn the adapter counterclockwise. Only after that you can remove the adapter.
Yes its more tricky to use M42 adapter on Pentax than on Canon beacause the adapter in the case of Pentax must stay completely in the K Pentax's mount in order to achieve infinity focus, like here: http://www.jr-worldwi.de/photo/images/adapter_in_body_small.jpg (a KOOD M42 -> K Pentax adapter) . The gold ring you can see was manufatured/glued to the adapter to make able the use of only auto M42 lenses without modifying the lenses.
http://www.jr-worldwi.de/photo/index.html?M42_auto_adapter_Pentax_PK.html
!!! Near the red dot (http://www.jr-worldwi.de/photo/images/adapter_in_body_small.jpg ) on the mount you can see the piese of metal/spring I was talking above .
Hope I helped you a little.
_________________
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 |
|
| Back to top |
|
|
|
|
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
