Old/alternate lenses, adapters, and lens mount conversions.
- Thread starter Ben Ang
- Start date
clubgrit
Senior Member
Thanks ... as for the info, I only got it comparing the MTF charts of the 1.4 to the 1.7 at slrlensreview.com ... it is noticeable in actual use, but it's ok
Carl Zeiss Planar T* 50mm f/1.4 (C/Y) Lens Review
ManWearPants
Senior Member
My unfinished modification to EF mount of Minolta MC 50/1.4
The close focusing range is excellent. Colours are also beautiful. Front and back bokeh nice. But I still need to work on infinity focusing if that is even possible hence the unfinished status.
The close focusing range is excellent. Colours are also beautiful. Front and back bokeh nice. But I still need to work on infinity focusing if that is even possible hence the unfinished status.
Shizuma
Senior Member
My unfinished modification to EF mount of Minolta MC 50/1.4
The close focusing range is excellent. Colours are also beautiful. Front and back bokeh nice. But I still need to work on infinity focusing if that is even possible hence the unfinished status.
from the literature available it seems to suggest that MD mount cannot modify/mount/adapt to EOS without optical interface without sacrificing infinity focus... meaning must insert glass...
Shizuma
Senior Member
My unfinished modification to EF mount of Minolta MC 50/1.4
The close focusing range is excellent. Colours are also beautiful. Front and back bokeh nice. But I still need to work on infinity focusing if that is even possible hence the unfinished status.
from the literature available it seems to suggest that MD mount cannot modify/mount/adapt to EOS without optical interface without sacrificing infinity focus... meaning must insert glass...
ManWearPants
Senior Member
The flange distance of EOS is 44mm while that of Minolta is 43.5mm. If I can take 0.5mm off the back of the barrel, I shld be able to hit infinity. Trying to figure out how to go about doing it without a lathe and vernier calliper.
I have wanted those early Minolta with the metal focusing ring. However, this 50mm earliest version is with 4 rows of ribbed rubber on the focusing ring. I read somewhere that it shares the same lens design as Rokkor 58/1.2. So grab and tried it out.
"April 1973 - Introduction of the 50mm f/1.4 MC Rokkor-PG. The lens used the same optical formula as the 58mm f/1.2 and weighed in at a more reasonable 305g compared to the f/1.2's 478g. It has outstanding build quality, and with its big (but not bulky) design it is an absolute pleasure to use." - source: http://www.rokkorfiles.com/Battle of 50s2.htm
It is indeed similar double gauss design. The 58/1.2 is said to be the same optical design as the Nikkor Noctilux so the same can also be said of the 50/1.4. The best part is the Rokkor 50/1.4 is dirt cheap compared to those 2 lenses.
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ManWearPants
Senior Member
continued......
After filing off the protruding rim which was used to fit the original mount, I got probably the 0.5mm off. Still couldn't get infinity but if I set the aperture to f16, I can get distant subject in focus. This is not true infinity, just within depth of field. I can probably take a little bit off the lens but decided against it as my intention for this lens is portrait distance and not landscape.
[update] Managed to achieve infinity after doing lots of filing. Think I removed about 2mm. Also file out the camera side of the adapter and fix it directly to the rear of the lens so that it looks like part of the lens. Then did some painting. Now looking good.
At wide open, the depth of field is very thin. Much thinner than other lenses I have seen, giving the impression that it is soft and low contrast. At f4, the bokeh is still quite smooth and pleasing. The sweet spot is probably at f2.8
[removed pict samples. Will update with another set]
After filing off the protruding rim which was used to fit the original mount, I got probably the 0.5mm off. Still couldn't get infinity but if I set the aperture to f16, I can get distant subject in focus. This is not true infinity, just within depth of field. I can probably take a little bit off the lens but decided against it as my intention for this lens is portrait distance and not landscape.
[update] Managed to achieve infinity after doing lots of filing. Think I removed about 2mm. Also file out the camera side of the adapter and fix it directly to the rear of the lens so that it looks like part of the lens. Then did some painting. Now looking good.
At wide open, the depth of field is very thin. Much thinner than other lenses I have seen, giving the impression that it is soft and low contrast. At f4, the bokeh is still quite smooth and pleasing. The sweet spot is probably at f2.8
[removed pict samples. Will update with another set]
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Some shots over the weekend (May1 rally at Hong Lim) with the Super Takumar 135/2 (v1) on the 5D.
ManWearPants
Senior Member
I want to use on FF cos the strength of this lens is its bokeh.
Some more from
Super Takumar 135/2.5v1
More photos from Hong Lim Park here:
http://www.clubsnap.com/forums/reportage-sports/1257309-may-1-protest-rally-speakers-corner.html
I'm eagerly awaiting the arrival of the S.Takumar 135/2.5 vII which is supposed to be better.
But I have no complaints about the v1 so far.
Super Takumar 135/2.5v1
More photos from Hong Lim Park here:
http://www.clubsnap.com/forums/reportage-sports/1257309-may-1-protest-rally-speakers-corner.html
I'm eagerly awaiting the arrival of the S.Takumar 135/2.5 vII which is supposed to be better.
But I have no complaints about the v1 so far.
ManWearPants
Senior Member
Thanks. Still got a little bit of work. I totally forgotten about the mount pin so is free rotate now. Also need to replace the super glue with epoxy for better hold and use spray paint instead of paint marker for a nice finish.
---------------------
BTW, anyone interested in new old stock Roller Planar 50/1.8 HFT converted to M42 mount can let me know before this Friday. See the link to post below.
http://www.clubsnap.com/forums/others/871310-anything-zeiss-38.html#post8441652
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vasudev007
New Member
Dear Folks
Where can i buy old manual Lens so that i can try on my camera. I am in need of portrait lens, 50/1.4 MM or more.
Please advise
Thx
Where can i buy old manual Lens so that i can try on my camera. I am in need of portrait lens, 50/1.4 MM or more.
Please advise
Thx
Thoth
Senior Member
eBay or BnS here.
Got myself the late version Super Takumar 135/2.5, sometimes also known as ver2.
I already have the K-mount version, but did not want to cut the lever to mount on the 5D.
I also have the ver1 (picts of the May Day rally were with that).
The two have pretty different characters from what I can observe.
The v1 is a bit cooler, slightly less sharp (but certain enough), almost a more 'conservative' drawing style.
The v2 seems warmer and more contrasty which also adds to apparent sharpness its also a bit sharper and certainly the drawing style is different esp at areas of high contrasts.
I already have the K-mount version, but did not want to cut the lever to mount on the 5D.
I also have the ver1 (picts of the May Day rally were with that).
The two have pretty different characters from what I can observe.
The v1 is a bit cooler, slightly less sharp (but certain enough), almost a more 'conservative' drawing style.
The v2 seems warmer and more contrasty which also adds to apparent sharpness its also a bit sharper and certainly the drawing style is different esp at areas of high contrasts.
Tried to mount the Pentax K-mount lenses to the 5D by removing the lever guard but no cutting off the aperture lever.
It does mount this way, but there is some obstruction by the lever against the inside of the camera near the contact pins of the 5D.
I also found that this method risks dislodging the lever spring due to the resistance between the 2 points.
(so bottom line, not a recommended way to do it. )
But its good to see the lenses I tried working on FF.
SMC K24/2.8
A50/1.4
It does mount this way, but there is some obstruction by the lever against the inside of the camera near the contact pins of the 5D.
I also found that this method risks dislodging the lever spring due to the resistance between the 2 points.
(so bottom line, not a recommended way to do it. )
But its good to see the lenses I tried working on FF.
SMC K24/2.8
A50/1.4
continued......
After filing off the protruding rim which was used to fit the original mount, I got probably the 0.5mm off. Still couldn't get infinity but if I set the aperture to f16, I can get distant subject in focus. This is not true infinity, just within depth of field. I can probably take a little bit off the lens but decided against it as my intention for this lens is portrait distance and not landscape.
[update] Managed to achieve infinity after doing lots of filing. Think I removed about 2mm. Also file out the camera side of the adapter and fix it directly to the rear of the lens so that it looks like part of the lens. Then did some painting. Now looking good.
At wide open, the depth of field is very thin. Much thinner than other lenses I have seen, giving the impression that it is soft and low contrast. At f4, the bokeh is still quite smooth and pleasing. The sweet spot is probably at f2.8
[removed pict samples. Will update with another set]
I've done this conversion for EOS before, but on the Rokkor X 50/1.4. it hits the 5D and D700 mirror at infinity, but will do fine on cropped sensors. hopefully the older version allows it to reach infinity.
here's another from the contax CZ 45/2.8 converted to Nikon f mount.
Soligor 17/4 (M42 mount on 5D)
oceanpriest
Senior Member
Revuenon 55mm f1.2 on Pentax K-x
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