Home · Register · Join Upload & Sell

Moderated by: Fred Miranda
Username  

  New fredmiranda.com Mobile Site
  New Feature: SMS Notification alert
  New Feature: Buy & Sell Watchlist
  

FM Forums | Leica & Alternative Gear | Join Upload & Sell

1
       2       end
  

Archive 2009 · Rokkor 45mm f2

  
 
Chris Radley
Offline

Upload & Sell: Off
p.1 #1 · 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 03:34 PM
rsrsrs
Offline
• • •
Upload & Sell: Off
p.1 #2 · 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 04:53 PM
Chris Radley
Offline

Upload & Sell: Off
p.1 #3 · 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 06:06 PM
Ed Sawyer
Offline
• • • •
Upload & Sell: Off
p.1 #4 · 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 05, 2009 at 07:44 PM
badastronaut
Offline
• •
Upload & Sell: Off
p.1 #5 · 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 05, 2009 at 09:24 PM
weezintrumpete
Offline
• • • •
Upload & Sell: On
p.1 #6 · 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 06, 2009 at 09:55 PM
trumpet_guy
Offline
• • • •
Upload & Sell: Off
p.1 #7 · 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 06, 2009 at 11:35 PM
CVickery
Offline
• • • •
Upload & Sell: On
p.1 #8 · 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 06, 2009 at 11:41 PM
debuggerus
Offline
• • •
Upload & Sell: Off
p.1 #9 · 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:

http://photos.vietrichmond.org/d/575-2/20090327_135937_40D__MG_1162.jpg






Apr 07, 2009 at 05:06 PM
weezintrumpete
Offline
• • • •
Upload & Sell: On
p.1 #10 · p.1 #10 · Rokkor 45mm f2


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


Apr 07, 2009 at 05:57 PM
JimU
Offline
• •
Upload & Sell: Off
p.1 #11 · 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 06:00 PM
debuggerus
Offline
• • •
Upload & Sell: Off
p.1 #12 · 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:

http://photos.vietrichmond.org/d/609-2/20090407_214831_40D__MG_3652.jpg


100% crop:
http://photos.vietrichmond.org/d/610-1/20090407_214831_40D__MG_3652-2.jpg


mounted on a 40D:
http://photos.vietrichmond.org/d/606-2/20090407_211411_DSLR-A100_DSC00391.jpg


some more:

http://photos.vietrichmond.org/d/600-2/20090328_142343_40D__MG_1546.jpg


http://photos.vietrichmond.org/d/596-2/20090328_140841_40D__MG_1494.jpg




Apr 07, 2009 at 10:45 PM
weezintrumpete
Offline
• • • •
Upload & Sell: On
p.1 #13 · p.1 #13 · Rokkor 45mm f2


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


Apr 08, 2009 at 09:27 AM
debuggerus
Offline
• • •
Upload & Sell: Off
p.1 #14 · 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 20, 2009 at 09:51 PM
weezintrumpete
Offline
• • • •
Upload & Sell: On
p.1 #15 · 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 10:09 AM
matthewm
Online
• • • •
Upload & Sell: On
p.1 #16 · p.1 #16 · Rokkor 45mm f2


I really, really love this lens on my X700 so I think I'll keep it that way. Don't want to go cutting and gluing and messing around with a perfectly good lens. REALLY wanted this to use on my 5D, but I can't justify the trouble that it's most likely going to cause me.

Not to mention I don't have the tools to get it done properly.

Nice images though. And a GREAT tutorial.

Best,
Matthew



Aug 28, 2009 at 03:55 PM
Makten
Offline
• • • • •
Upload & Sell: On
p.1 #17 · p.1 #17 · Rokkor 45mm f2


Lovely bokeh there! Just a trace of outlining of the blur discs, which makes it "interesting" but still smooth.

Edit: And of course; great shots of the kids!



Aug 28, 2009 at 04:22 PM
Jim Schemel
Offline
• • • • •
Upload & Sell: Off
p.1 #18 · p.1 #18 · Rokkor 45mm f2


Here is a set taken with my 45 Rokkor on a 5D
http://www.flickr.com/photos/footstool67/sets/72157622079471838/
Very nice lens great sharpness and color and very small and light
-Jim



Aug 29, 2009 at 11:38 AM
Cableaddict
Offline
• • • •
Upload & Sell: Off
p.1 #19 · p.1 #19 · Rokkor 45mm f2


debuggerus wrote:
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


Debuggerus, thanks for the excellent pictorial guide.

One thing puzzles me, though: You remove the aperture mechanism, and never replace it? How does that work? Is that mechanism only there for when the (Minolta) camera does auto stop-down?

Also: Any mirror issues? (I use a 5D, so this is always a concern)

thanks



Sep 17, 2009 at 02:07 PM
cogitech
Offline
• • • • • •
Upload & Sell: On
p.1 #20 · p.1 #20 · Rokkor 45mm f2


The aperture mechanism needs to be re-installed onto the back of the plate before assembly, or aperture control will be lost altogether. There should be no mirror issues to worry about.


Sep 17, 2009 at 02:50 PM
1
       2       end




FM Forums | Leica & Alternative Gear | Join Upload & Sell

1
       2       end
    
 

You are not logged in. Login or Register

Username       Or Reset password



This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.