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Archive 2009 · Mamiya 645 AFD and FD canon 85 1.2
  
 
biotar
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p.2 #1 · p.2 #1 · Mamiya 645 AFD and FD canon 85 1.2


Now there is a conversion which i haven't even fantasised about. How did you come up with it.

great work!
May 28, 2009 at 09:00 AM
Dim.ka_
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p.2 #2 · p.2 #2 · Mamiya 645 AFD and FD canon 85 1.2


Graham, thanks i defenetly let you know if i go to Tallinn. Do you have mamiya adapter for your DIGITAL BACK? I quess the best result will be with Phase One P65+ since it is almost the full frame back and i really want to find out what the defocus would be with the such huge image capture area.

Andre, i really like the creamy/fat defocus at certain focus distances. At this point i am still studying how to get the best result out of this combo, hope there will be more perfect pics, soon. (Already find out that it needs more contrasty film like velvia/provia not the Ektar or Kodak)

Ed, actually it is not quite biotar type lens, every fast lens with huge sferical front glass will make the same swirly foreground or even the whole image.
check this
rokkor 85 1.7
__http://album.foto.ru:8080/photos/or/41852/560189.jpg

pentax 50 1.2
__http://album.foto.ru:8080/photos/or/41852/561909.jpg
rokkor 58 1.2 the same ef canon 50 1.4 and others

and yes i have removed the rear floating element. I will check the frame coverage with normal ef converted fd 85 1.2L. It is easy to check with white a4 office paper (just draw the rectangle with 645 frame sides and take the lens in hand and move it closer to the paper at the lens infinity focus position).

biotar, i really like idea to have fast lens with the larger image area and this lens has all what i need for such convertion - also it is possible to convert 135mm or 180mm lenses from 35mm format for medium format cameras.
May 29, 2009 at 03:21 PM
Dim.ka_
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p.2 #3 · p.2 #3 · Mamiya 645 AFD and FD canon 85 1.2


So few thoughts

the drawing is like you have normal 50mm f1.2 lens but multiply the effect by 2.7 times (image area is bigger than 35mm format by 2.7 times)

The result greatly depends from the focusing distance

here is close focus - pretty smooth

wideopen/ kodak e100g

http://album.foto.ru:8080/photos/pr1/41852/577272.jpg

here is more farer focusing distance

wideopen/ kodak e100g

http://album.foto.ru:8080/photos/pr1/41852/577845.jpg

Edited on Jun 04, 2009 at 08:27 AM · View previous versions
May 29, 2009 at 03:29 PM
Graham Mitchell
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p.2 #4 · p.2 #4 · Mamiya 645 AFD and FD canon 85 1.2


Dim.ka_ wrote:
Graham, thanks i defenetly let you know if i go to Tallinn. Do you have mamiya adapter for your DIGITAL BACK? I quess the best result will be with Phase One P65+ since it is almost the full frame back and i really want to find out what the defocus would be with the such huge image capture area.


No, but I'm on the lookout for a cheap Mamiya adapter. Would be fun to use the Mamiya as an experimental platform for things like this. Hopefully we could put all the gear together some day.

I'd love to have a 645 size back but can only offer you 48x36mm at this stage


May 29, 2009 at 05:07 PM
Dim.ka_
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p.2 #5 · p.2 #5 · Mamiya 645 AFD and FD canon 85 1.2


Thanks Graham for your kind offer.

Here are more exotic pics. They have insane look - i really like it

wideopen
http://album.foto.ru/gen_photo_preview.php?ns_type=1&photo_id=585613.jpg

http://album.foto.ru:8080/photos/pr1/41852/585597.jpg
Jun 03, 2009 at 06:53 PM
Dim.ka_
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p.2 #6 · p.2 #6 · Mamiya 645 AFD and FD canon 85 1.2


some more samples - all wideopen
provia 100 iii rdp

http://album.foto.ru:8080/photos/pr1/41852/586334.jpg

http://album.foto.ru:8080/photos/pr1/41852/586335.jpg

http://album.foto.ru:8080/photos/pr1/41852/586353.jpg

http://album.foto.ru:8080/photos/pr1/41852/586352.jpg

http://album.foto.ru:8080/photos/pr1/41852/586583.jpg

http://album.foto.ru/gen_photo_preview.php?ns_type=1&photo_id=586584.jpg

http://album.foto.ru/gen_photo_preview.php?ns_type=1&photo_id=586601.jpg
Jun 04, 2009 at 03:20 PM
wiregen
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p.2 #7 · p.2 #7 · Mamiya 645 AFD and FD canon 85 1.2


Dimka did you remove the rear element on 85 FD L? That's kind of like my 50mm f/1.2L FD without the rear element
Jul 22, 2009 at 12:02 AM
Leon Noel
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p.2 #8 · p.2 #8 · Mamiya 645 AFD and FD canon 85 1.2


I think he explained he did, to accommodate for the over-intruding of the lens into the girth of the Mamiya mount.
Jul 22, 2009 at 01:40 AM
Dim.ka_
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p.2 #9 · p.2 #9 · Mamiya 645 AFD and FD canon 85 1.2


wiregen, as Leon has already said - i removed the last element, because if i leave it - the lens would not cover full 645 frame and the real problem to fix the last element in its position and need to cut mirror more and just for the information - i have another 85mm 1.2L without two rear elements - in that case it would cover 6x9

I have tried this combo (mamiya 645 +85L ) with original hood - thought it would be worse

f1.2
http://album.foto.ru:8080/photos/pr1/41852/667029.jpg

http://album.foto.ru:8080/photos/pr1/41852/667030.jpg
Jul 23, 2009 at 02:51 AM
Dim.ka_
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p.2 #10 · p.2 #10 · Mamiya 645 AFD and FD canon 85 1.2


Another few

f1.2 velvia 50
Sep 15, 2009 at 04:12 AM
bellyface
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p.2 #11 · p.2 #11 · Mamiya 645 AFD and FD canon 85 1.2


very impressive. wow. so have you tried the mamiya 80 1.9? you get results similar to this, but not identical.
Sep 15, 2009 at 07:27 AM
JimBuchanan
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p.2 #12 · p.2 #12 · Mamiya 645 AFD and FD canon 85 1.2


I agree with an above comment. I don't see a sharpness plane for reference.


Sep 15, 2009 at 07:55 AM
Ed Sawyer
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p.2 #13 · p.2 #13 · Mamiya 645 AFD and FD canon 85 1.2


Interesting stuff! Removing 2 rear elements (the last 2?) covers 6x9? wild. I wonder how that would be mated up to say a Fuji 6x9 or something.

Thanks for taking the plunge on all these adventures and sharing the results with us.

-Ed
Sep 15, 2009 at 09:11 AM
Dim.ka_
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p.2 #14 · p.2 #14 · Mamiya 645 AFD and FD canon 85 1.2


Another few
all f1.2







bellyface, i do not have any other lens for that mamiya 645 afd, i just wanted to find out how will look really fast lens on such big sensor/film area.

Jim, few things to consider - not that easy to catch the right focus in the viewfinder (although i have screen for manual lenses Type C - it is really helpfull for center area focus point) and scanning procedure.

Ed, thanks for your words.
Sep 17, 2009 at 06:02 PM
Chez Wimpy
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p.2 #15 · p.2 #15 · Mamiya 645 AFD and FD canon 85 1.2


Just stumbled upon this thread, very beautiful (and strange!) shots here. I was wondering if the Sigma 50/1.4 could do something similar... from my (very) informal tests, the image circle is larger than my 85/1.8. Of course, I don't have anything to test it on, but a f1.4 WA on medium format sounds intriguing. I guess Canon never had their 50/1.0L in FD mount?
Mar 13, 2010 at 03:26 AM
pookipichu
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p.2 #16 · p.2 #16 · Mamiya 645 AFD and FD canon 85 1.2


wow, really neat images. They have such a surreal quality.
Mar 13, 2010 at 12:13 PM
Makten
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p.2 #17 · p.2 #17 · Mamiya 645 AFD and FD canon 85 1.2


Personally I don't get it since the removal of the rear element has totally ruined the image quality. Cool idea, but I'm not impressed by anything other than the effort. Kudos for trying it out!
Mar 13, 2010 at 01:23 PM
Dim.ka_
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p.2 #18 · p.2 #18 · Mamiya 645 AFD and FD canon 85 1.2


Makten, thanks for your opinion, but few things to consider - it is impossible to leave the rear element with Mamiya body (but even if you manage to fit the rear element, the lens itself will not cover 645 format), many others fast lenses do not have that floating element and still produce great images wideopen, it could be that there is some focusing error - it would be great if i had digital back and could adjust focusing screen and the lens, see sample with flowers it is also wideopen and focusing is quite in spot. When you stop down the lens it performs quite normal

f4
http://album.foto.ru:8080/photos/pr1/41852/589666.jpg

and here is weird "dinosaur" f1.2
http://album.foto.ru:8080/photos/pr1/41852/586585.jpg

and i still have this combo, some day will get digital back and will see how it would be.

Edited on Mar 13, 2010 at 02:50 PM · View previous versions
Mar 13, 2010 at 02:02 PM
Dim.ka_
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p.2 #19 · p.2 #19 · Mamiya 645 AFD and FD canon 85 1.2


Just to show the idea how much you need to modify your mirror and lens rear mount in order to obtain infinity focus


http://album.foto.ru/gen_photo_preview.php?ns_type=0&photo_id=1013168.jpg
Mar 13, 2010 at 02:42 PM
mMontag
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p.2 #20 · p.2 #20 · Mamiya 645 AFD and FD canon 85 1.2


Dim.ka_

For my personal taste - I really love the images with that combination. Unique signature. The softness seems to work well with portrait subjects and the OOF area is just in a category by itself. IQ is one characteristic, uniqueness is another - creating a composition can be a combination of many different aspects.

I understand removing the last element to increase the light path for the larger sensor but would that lens work on the Mamiya with a Mirex or similar adapter to keep from getting into the mirror path?
Mar 13, 2010 at 02:44 PM
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