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Rokkor 45mm f2

Chris Radley
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p.1 #1 · Rokkor 45mm f2

Hi, is this lens any good based on people's experiences?

I've just started building a collection of alternative lenses and today bought a 58mm f1.2 MC Rokkor which is beautiful. Is the 45mm f2 Rokkor similar in IQ?

Thanks

Jan 05, 2009 at 08:34 PM

rsrsrs
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p.1 #2 · Rokkor 45mm f2

hi,
if you have a rollei EOS adapter, you can clamp it on the minolta mount
an test it until 3-4m without building anything.
My first view with it on my 5D was very promising.
but converting it will not be easy.
later this month i hopefully know more.

mit freundlichen gruessen

r schneider

Jan 05, 2009 at 09:53 PM

Chris Radley
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p.1 #3 · Rokkor 45mm f2

Thanks.

I was thinking I might be able to follow Cogitech's conversion process. Really just wondering what the IQ of the lens is like.

Jan 05, 2009 at 11:06 PM

Ed Sawyer
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p.1 #4 · Rokkor 45mm f2

IQ is ok but nothing super special. Certainly not rokkor 58/1.2 quality or even 50 1.4 quality IMO.

I have a test of it posted I think at www.edsawyer.com/lenstests/

if it's not there, I have it but haven't posted it yet.

-Ed

Jan 06, 2009 at 12:44 AM

badastronaut
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p.1 #5 · Rokkor 45mm f2

i have the 45mm f2, two actually since it was so cheap might as well buy a spare.

IQ is pretty good, very pancake like compact and lightweight which helps for discrete shooting. Definitely no where near 58mm f1.2.

It was sold as a kit lens i believe.

Jan 06, 2009 at 02:24 AM

weezintrumpete
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p.1 #6 · Rokkor 45mm f2

Sorry to bump an old thread, but is there any information on converting one of these to EOS? I recently acquired one for $20 and thought it'd be nice to use as a pancake on a 5D. I've heard rumors of something related to the Cogitech forum (which is down) and I can't find any information on how to do the conversion.

Thanks!

Apr 07, 2009 at 02:55 AM

trumpet_guy
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p.1 #7 · Rokkor 45mm f2

It's small but not greatly smaller than a Contax CZ 50/1.7 and so I've never
thought much about converting mine to EOS mount.

I don't recall ever seeing instructions here on how to do that conversion,
but best wishes. Maybe you'll find the site.

Apr 07, 2009 at 04:35 AM

CVickery
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p.1 #8 · Rokkor 45mm f2

JimBuchanan described his approach once for me. It isn't easy and the lens probably doesn't have the IQ to make it worthwhile. The 45/2 I bought for $15Cdn is still a Minolta mount. If I happen across a MD>4/3 adapter some day that's cheap enough I may try it out on my friend's Oly.

Apr 07, 2009 at 04:41 AM

debuggerus
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p.1 #9 · Rokkor 45mm f2

Well, I really like my converted one .. I think it's a sleeper, especially so cheap. I think it is easier than the 50 1.4. Used a circular grinder, sanded down .5 mm. It's easy to sand since the MD mount is removable from the bottom base. I think you should try to convert it. Good luck.

A sample:

Apr 07, 2009 at 10:06 PM

weezintrumpete
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p.1 #10 · Rokkor 45mm f2

That looks great debuggerus. Any more samples? I also sent you a PM...

Apr 07, 2009 at 10:57 PM

JimU
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p.1 #11 · Rokkor 45mm f2

i'd like to see more samples as well please. about 1028x768?

i've got one on my minolta XG-1 but it's focus ring is kinda loose.

Apr 07, 2009 at 11:00 PM

debuggerus
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p.1 #12 · Rokkor 45mm f2

One correction: now that I look at the conversion, it is the same difficulty as the rokkor 50 1.4. I had to grind both the mount base and the M42-EOS adapter and adjusted infinity focus from the front in the end.

As request, a few more larger samples:

100% crop:

mounted on a 40D:

some more:

Apr 08, 2009 at 03:45 AM

weezintrumpete
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p.1 #13 · Rokkor 45mm f2

Wow, I am impressed and now very interested in doing this conversion

Apr 08, 2009 at 02:27 PM

debuggerus
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p.1 #14 · Rokkor 45mm f2

I've completed another 45mm f2 conversion. This time I managed to record the process.
The process should be similar with many other rokkors (50 f1.4, 85 f2, 28 f2, ...) using simpler tools (I wish I had a lathe). I hope it will be helpful.

45mm F2 to EOS conversion

Cheers!
PDo

Apr 21, 2009 at 02:51 AM

weezintrumpete
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p.1 #15 · Rokkor 45mm f2

Thanks for posting that! Does anyone else have any experience with the 45mm on EOS? I'm going to attempt the conversion soon...

Apr 21, 2009 at 03:09 PM


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