View previous topic :: View next topic |
Author |
Message |
Oldhand
Joined: 01 Apr 2013 Posts: 6008 Location: Mid North Coast NSW - Australia
|
Posted: Sun Sep 16, 2018 9:10 am Post subject: |
|
|
Oldhand wrote:
quidam wrote: |
Quote: |
PK or M42?
Another Tomioka/Cosina Revuenon I suppose.
Haven't tried the f/1.7, but I value the f/1.2 above any other fifty of the same speed I tried, and the f/1.4 (I had no time to properly test it) should be quite good too.
I think you'll enjoy it |
The 1.7 is a M42 mount. I can't speak for the 1.2, because I don't own it, but I do have the 1.4 (PK) and that one is better than the 1.7. and one of my favorites. |
In the past I have had both the Revuenon 1.7 and 1.4 in M42 mount and they were both excellent.
Apart from the slightly faster aperture, however, I could not find any discernible difference in IQ between the two, and the bokeh from the 1.7 was delicious. I sold the 1.4 and hung onto the 1.7 for a while before letting it go too.
I regret selling it now.
Tom |
|
Back to top |
|
|
cyberjunkie
Joined: 24 Mar 2010 Posts: 282 Location: Chiang Mai, Bologna, Amsterdam
|
Posted: Sun Sep 16, 2018 7:03 pm Post subject: |
|
|
cyberjunkie wrote:
stevemark wrote: |
There was never a Pentax M42 1.2/50mm lens - the M42 mount is too small. One of the several reasons for introducing the PK bayonet was the ability to manufacture large diameter f1.2 lenses.
|
Not a 50mm, but a 55mm.
The glass of the rear element had a little slice cut out because of the small mouth of the M42 mount.
The almost identical PK mount version has the same rear element (with an easily recognisable shape), but no cut-out.
The Tomioka design is easy to identify because of the way the rear glass looks. This way you can tell the difference from the Cosina one (Revuenon and Porst lenses are not identical). The former Tomioka and the latter Cosina.
I found that Cosina sold under its brand both versions. The Tomioka design was called Cosina, while Cosina's own design was sold as Cosinon-S. Both f/1.2 55mm.
I have both, one is Revuenon and the other Porst, and from my experience, using MY examples -lots of variance in optics of such vintage - the Revuenon/Tomioka beats the Porst hands down.
It might be due to my taste, or to a lens above average... what I know is that it belongs to the same league of the Summicron 2/90mm, for example. There is something special in both lenses, a glow that does not hide the underlying sharpness.
Of course the two optics are different, but I found that at f/2 they have much in common. A a leicophile would call it heresy
EDIT:
The matter of the attribution to either Tomioka or Cosina of 50mm and 55mm lenses is highly controversial.
The only way to support opinions with facts is to find almost identical lenses branded with the name of the original maker, or (in the case of Tomioka) find the siamese twin with the Yashica brand. The same concept applies to early Mamiya lenses. I have a fifty of that brand that is exactly the carbon copy of a Yashinon (which is for sure a Tomioka lens, even if manufactured before the acquisition by Kyocera).
I have seen a typical Tomioka chrome nose lens on a Yashica that predates the M42 line (early Yashinon lenses had a proprietary bayonet mount, completely different from the successive Contax bayonet).
The attribution of Revue and Porst lenses to either Tomioka or Cosina is a complex affair.
I have a 50mm f/1.7 that is practically identical to the Chinon version, which reveals its Tomioka origin.
But it's not always so easy! I have seen an 1.4/55mm MC Revuenon with PK mount, believed to be Tomioka, that has a rubber band on the focusing ring that is very much Cosina-like. I would not be so sure about the attribution without opening the lens and comparing.
Personally I believe that the level of integration between some japanese lens makers was deeper than what most people think, and that such exchanges covered different fields.
I have seen the use of common parts in old preset teles, attributed to Komine, Kino and IIRC also Tokina.
So it wouldn't be a suprise if the two companies co-manufactured some objectives.
Under a practical point of view, as opposed to collector's point of view, the only thing that really matters is to know if a certain lens uses one optical design or another.
For example it would allow you to buy a Porst or a Revuenon, knowing that it's substantially identical to a more expensive Rikenon, and also be aware of what kind of performance to expect from it.
The easiest way to find out is to compare the shape of the rear group.
A complete disassemble of the optics would give a more accurate answer.
I have seen on Ebay a curvometer (to measure the curvature of a lens) for quite cheap... _________________ Pentax Bodies: 6x7, K2, MX, LX, Super A, Z-1, K-1, K-5 II, K-01, K10D, K200D
Other cameras: Leica CL, Leica M5, Rolleiflex, Mamiya Super 23, Horizont, and many bellows cameras from 4x5" to 8x10"
- Shooting only digital recently, FF and APS-C
- Collecting vintage large format lenses (plenty of them )
- Looking for Pentax-A* 200mm Macro and Pentax-A* 1.8/135mm, Sigma 150mm or 180mm Macro PK, Sigma 50-500 AF PK, Enna 1.5/85mm M42; selling Pentacon Six/Pentax 67/Mamiya Press/Leica M/Rolleiflex/4x5"/Manfrotto stuff
MY BELOVED PK, M42 LENSES
Photographica sets
On sale
Last edited by cyberjunkie on Mon Sep 17, 2018 12:05 pm; edited 2 times in total |
|
Back to top |
|
|
fiftyonepointsix
Joined: 30 Apr 2017 Posts: 292
|
Posted: Sun Sep 16, 2018 9:38 pm Post subject: |
|
|
fiftyonepointsix wrote:
Canon 13.5cm F4, uncoated and uncoupled. Leica mount.
Canon 13.5cm F4_3 by fiftyonepointsix, on Flickr
Cleaned up quite well, disassembled, relubed, cleaned all of the glass surfaces. This lens is from late 1947, one of the first marked "Canon". |
|
Back to top |
|
|
tgm
Joined: 26 Jul 2014 Posts: 16 Location: Denmark
|
Posted: Mon Sep 17, 2018 4:04 pm Post subject: |
|
|
tgm wrote:
I got a Minolta md 45/2 with both caps for less than ~8$ flea market lens. |
|
Back to top |
|
|
rybolt
Joined: 13 Sep 2016 Posts: 94 Location: Yellow Springs, Ohio USA
|
Posted: Mon Sep 17, 2018 7:19 pm Post subject: |
|
|
rybolt wrote:
100mm f2.8 Trioplan in Exakta mount
#1
_________________ Fuji X and Sony A cameras with many Fuji, Zeiss, Leica and other adapted lenses |
|
Back to top |
|
|
D1N0
Joined: 07 Aug 2012 Posts: 2491
|
Posted: Tue Sep 18, 2018 10:36 am Post subject: |
|
|
D1N0 wrote:
Super-Takumar 135mm F3.5 second version (4 elements) incoming. I already have the first 5 element version, so I can compare the two. Gotta stop this..... (from Etsy by the way).
_________________ pentaxian |
|
Back to top |
|
|
D1N0
Joined: 07 Aug 2012 Posts: 2491
|
Posted: Sat Sep 22, 2018 1:39 pm Post subject: |
|
|
D1N0 wrote:
A zoom (sorry), just because it was only ten pounds on Ebay and I needed a mate for the 35-105 3.5
_________________ pentaxian |
|
Back to top |
|
|
Paulius
Joined: 25 Nov 2014 Posts: 321 Location: Connecticut
|
Posted: Sat Sep 22, 2018 11:24 pm Post subject: |
|
|
Paulius wrote:
Minolta Maxxum 24-105 f3,5-4,5
Record price on this particular flea market - $30.-
Still has no chance to test it on my Sony A7R2.
Any opinions on this lens, if some one has the same? |
|
Back to top |
|
|
stevemark
Joined: 29 Apr 2011 Posts: 3754 Location: Switzerland
|
Posted: Mon Sep 24, 2018 4:00 pm Post subject: |
|
|
stevemark wrote:
Paulius wrote: |
Minolta Maxxum 24-105 f3,5-4,5
Record price on this particular flea market - $30.-
Still has no chance to test it on my Sony A7R2.
Any opinions on this lens, if some one has the same? |
I've been using it occasionally on the A900 (24MP FF). Not stellar wide open, but cleary up a lot at f11. Nice small travel lens for the mountains - for landscape at f11!
Stephan _________________ www.artaphot.ch |
|
Back to top |
|
|
sergun
Joined: 01 Jun 2017 Posts: 283 Location: наша раша
|
Posted: Mon Sep 24, 2018 4:58 pm Post subject: |
|
|
sergun wrote:
Minolta MD-III 28mm f3.5 Surprisingly stable in a flash. (£ 30 with delivery from good old Britain )
_________________ https://www.flickr.com/photos/105161078@N06/
https://fotoload.ru/fotosets/6661/
Last edited by sergun on Wed Sep 26, 2018 3:34 pm; edited 1 time in total |
|
Back to top |
|
|
Zeeke
Joined: 17 Apr 2010 Posts: 174 Location: Sweden
|
Posted: Mon Sep 24, 2018 11:31 pm Post subject: |
|
|
Zeeke wrote:
Yashica ML 35mm f2.8
I don't have an Contax/Yashica adapter for my Fuji and I think that the XT10 is to small for this kind of adapted lenses anyway.
but it looked so nice so I couldn't leave it in the store 😊good price too 20 euros.
I'll try to sell it for profit or keep it I might get the right camera for it in the future...
_________________ Pentax Ks1
Fuji XT10 |
|
Back to top |
|
|
MMouse
Joined: 18 Apr 2018 Posts: 58
|
Posted: Tue Sep 25, 2018 10:56 am Post subject: |
|
|
MMouse wrote:
Vivitar 35mm f/1,9 m42 with mint optics
Minolta MD 28mm f/2,8 III |
|
Back to top |
|
|
stevemark
Joined: 29 Apr 2011 Posts: 3754 Location: Switzerland
|
Posted: Tue Sep 25, 2018 5:01 pm Post subject: |
|
|
stevemark wrote:
Zeeke wrote: |
Yashica ML 35mm f2.8 |
It is - like several other relatively "modern" 2.8/35mm vintage lenses - a very solid performer. The lens is quite similar in its general character to the Minolta MC/MD 2.8/35mm [5/5] or the Sony Zeiss Sonnar 2.8/35mm.
Stephan _________________ www.artaphot.ch |
|
Back to top |
|
|
keysersoeze
Joined: 19 Sep 2018 Posts: 11
|
Posted: Tue Sep 25, 2018 8:51 pm Post subject: |
|
|
keysersoeze wrote:
Tokina 90mm 2.5 in MD-mount with adapter, hood and case |
|
Back to top |
|
|
kds315*
Joined: 12 Mar 2008 Posts: 16541 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Tue Sep 25, 2018 9:43 pm Post subject: |
|
|
kds315* wrote:
Canon RCA TV lens 3.5" f1.5 - special projection lens for format conversion with iris _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
|
|
Back to top |
|
|
calvin83
Joined: 12 Apr 2009 Posts: 7553 Location: Hong Kong
|
Posted: Wed Sep 26, 2018 3:05 pm Post subject: |
|
|
calvin83 wrote:
kds315* wrote: |
Canon RCA TV lens 3.5" f1.5 - special projection lens for format conversion with iris |
I saw this too. I may have bought it if I have extra space for new lenses. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
|
Back to top |
|
|
cyberjunkie
Joined: 24 Mar 2010 Posts: 282 Location: Chiang Mai, Bologna, Amsterdam
|
Posted: Thu Sep 27, 2018 4:38 pm Post subject: APO Telezenitar 135mm |
|
|
cyberjunkie wrote:
Just got the Apo Telezenitar I showed in a previous post on this thread.
Unfortunately it seems that the blades are blocked fully closed because of some mechanical failure.
There seems to be no oil sticking to the blades, it looks like the spring is either broken or disengaged.
The auto pin is loose, and there is no A/M switch, so the failure seem to be related to the mechanism that keeps the blades open.
Anyone with some experience in this field?
I don't think late "auto" soviet lenses with no switch have huge differences one from the other.
I'd like to avoid to open what's not supposed to be opened.
For example there are three screws on the back, at the perimeter, plus two other screws that are close one to the other.
Any guidance on which screws to remove and which are better left alone would be appreciated.
It is an uncommon high performance lens, new old stock. It doesn't have a fingerprint...
I'd like to take extra care and make no mistakes.
Never opened a lens like this, normally I leave the most valuable objectives to the care of my friend/repairman, who's hundred times better than me doing this kind of things...
Unfortunately I am thousands Km. away If I want to use the lens at f stops larger than f/22 I have to work on this lens by myself
Any advice would be super appreciated
Thanks _________________ Pentax Bodies: 6x7, K2, MX, LX, Super A, Z-1, K-1, K-5 II, K-01, K10D, K200D
Other cameras: Leica CL, Leica M5, Rolleiflex, Mamiya Super 23, Horizont, and many bellows cameras from 4x5" to 8x10"
- Shooting only digital recently, FF and APS-C
- Collecting vintage large format lenses (plenty of them )
- Looking for Pentax-A* 200mm Macro and Pentax-A* 1.8/135mm, Sigma 150mm or 180mm Macro PK, Sigma 50-500 AF PK, Enna 1.5/85mm M42; selling Pentacon Six/Pentax 67/Mamiya Press/Leica M/Rolleiflex/4x5"/Manfrotto stuff
MY BELOVED PK, M42 LENSES
Photographica sets
On sale |
|
Back to top |
|
|
sergtum
Joined: 14 Nov 2016 Posts: 735
|
Posted: Thu Sep 27, 2018 6:04 pm Post subject: |
|
|
sergtum wrote:
DSC02159 by Mr TTT, on Flickr |
|
Back to top |
|
|
D1N0
Joined: 07 Aug 2012 Posts: 2491
|
Posted: Fri Sep 28, 2018 8:58 am Post subject: |
|
|
D1N0 wrote:
A better copy of the Sigma Super-Wide II 24mm F2.8
The one on the left _________________ pentaxian |
|
Back to top |
|
|
DanaWhite
Joined: 28 Sep 2018 Posts: 1
|
Posted: Fri Sep 28, 2018 2:16 pm Post subject: |
|
|
DanaWhite wrote:
I have recently bought the 11-22mm EF-M lens and have not used it extensively yet, but some early tests indicate that it is noticeably sharper than the 18-55 EF-M at the centre, and significantly sharper nearer the edges.
reciprocating saw
Last edited by DanaWhite on Wed Oct 03, 2018 8:26 am; edited 1 time in total |
|
Back to top |
|
|
Sciolist
Joined: 29 Mar 2017 Posts: 1445 Location: Scotland
Expire: 2021-04-16
|
Posted: Fri Sep 28, 2018 2:39 pm Post subject: |
|
|
Sciolist wrote:
FED 50 3.5 collapsible in LTM39.
I'm currently going through the "bloody hell it's sharp in the middle" and "isn't it small" phase. Once I have something meaningful to say I'll post a pic, as I bought it specifically to go on my new used Fujifilm x-e1 and it does look quite groovy on it, although I suspect any comment I can make has been said before.
As a side note, I always buy within the U.K, even if I can see a better deal elsewhere. However with the FED, I purchased from a dealer in Estonia. The item arrived within 4 working days of ordering, was well packaged and generally as described. I say generally, as it had atomised lubricant colonising one face of an internal element, although this was only obvious through a loupe, and was a 5 minute job to clean up. Ironically I had also bought an Industar 50 3.5 in M42 from a U.K seller and have been roundly stiffed. I'm still trying to get it returned to an uncommunicative seller. |
|
Back to top |
|
|
sergtum
Joined: 14 Nov 2016 Posts: 735
|
Posted: Sat Sep 29, 2018 5:56 pm Post subject: |
|
|
sergtum wrote:
DSC02245 by Mr TTT, on Flickr
next photos are taken by Sony a7 with T-22 (from Смена)
DSC02255 by Mr TTT, on Flickr
DSC02250 by Mr TTT, on Flickr |
|
Back to top |
|
|
fiftyonepointsix
Joined: 30 Apr 2017 Posts: 292
|
Posted: Sun Sep 30, 2018 12:46 pm Post subject: |
|
|
fiftyonepointsix wrote:
A 1955 Leica 9cm F4 Elmar, advertised with "Debris" in the lens. $43.
Elmar 9cm F4 Teardown by fiftyonepointsix, on Flickr
Elmar 9cm F4 Teardown by fiftyonepointsix, on Flickr
Removing the front element is easier with the later Elmars. Debris was black paint from the front element's rim, flaking off.
Without the debris and haze on the inner elements,
Elmar 9cm F4 (coated) Test by fiftyonepointsix, on Flickr
Much Better! |
|
Back to top |
|
|
D1N0
Joined: 07 Aug 2012 Posts: 2491
|
Posted: Wed Oct 03, 2018 11:09 am Post subject: |
|
|
D1N0 wrote:
Hopefully the last of my lba spree:
Nice and compact Pentax-m 200mm f4 my Pentax-M primes collection now is 20-28(3.5)-40-50(1.7)-135-200 _________________ pentaxian |
|
Back to top |
|
|
rybolt
Joined: 13 Sep 2016 Posts: 94 Location: Yellow Springs, Ohio USA
|
Posted: Thu Oct 04, 2018 7:11 pm Post subject: |
|
|
rybolt wrote:
I had one of these back in the 80's and shot a lot of Velvia with it and the R4SP camera. Very handy focal length. Focus to 4 mtrs is not good but a 25mm extension tube helps a lot. _________________ Fuji X and Sony A cameras with many Fuji, Zeiss, Leica and other adapted lenses |
|
Back to top |
|
|
|