Even once modified to achieve exact infinity focus, the Rokkor 58/1.2 protrude too far into the mirror chamber and a 5D/MarkII will need a mirror shave to avoid the rear element being hit at infinity.Not necessarily. I managed to file back the shroud around the rear element, and it only sporadically causes mirror lockup. ANd I think I've converted mine to go a very small hair beyond infinity.

I've never tested the infinity, but my converted Rokkor 58/1.2 works fine with my 5D MkII without any problem.

For my intended purpose, shooting at <30 feet/10m, I think the lens will clear the mirror of the 5D MarkII then . Thank you for your input, guys!

Personally, DON"T SHAVE THE MIRROR. The Rokkor is sought after specifically because it is a "old" lens design, with no floating element movements. So, this means that you can have accurate sharpness at some distance with the lens at a non-specified distance from the negative. This in turn means that you can have the lens be 1 or 2 mm's further than it was design, and all you will have is EQUALLY sharp images ( compared to original specs), lacking infinity focus. In most cases, this lens has a focus adjustment ring in the front that can correct for most of what the 5d makes you lose, but just assume that you will not need to focus out past 20 meters. I use it on a 5d and 5dII, and it works like a charm like this. This is of course up for specific body and lens variation and you are always best off testing the camera by "bulb" exposing the camera, sans lens, and then mounting the lens, and releasing the shutter, which allows the mirror to return through the full movement without any pressure bearing on the mirror assembly, so if there is a block, you have a FAR lesser risk of damage.

wiregen wrote:
this lens is super interesting, things can be milky smooth but in any highlights it the bokeh goes bonkers!

The bokeh looks rather nervous there

Rokkor 58/1.2 on a 5D (is this referred to as 'classic' now?). If memory serves me, this was shot at f/2. I really need to use this lens more than I do...

Rokkor 1.2/58 @f2 on 5DMKII

I had one for a few months. It was good, but didn't really wow me like it did some people here. Sharp, decent bokeh at times, average at others. I much prefer my Sigma 50 f/1.4, and I really prefered the Rokkor 50 f/1.4 when I was using it (that's an exceptional lens).

A couple from my old 58/1.2, both at f/1.2:

is this referred to as 'classic' now?

you mean the beer?

Anden wrote:
Thank you André. The people over at Fotosidan.se did not like the violin...


A



They are crazy. I like all of them, but the last one is incredibly emotive. Makes me want to go learn how to play.
Jim

My Rokkor is f-mount, but this shot was with the Panasonic G1 @ 1.2.

My Rokkor will not focus to infinity, but mainly because the rear reaches so far into the body of my D700 it hits the mirror. There is very little left of the spacer to sand away.

The kitty pic hangs in my daughters' room. They love it!

Great kitty pic! A doggy pic -

Grenache wrote:
Anden wrote:
Thank you André. The people over at Fotosidan.se did not like the violin...


A



They are crazy. I like all of them, but the last one is incredibly emotive. Makes me want to go learn how to play.
Jim

Thanks Jim! It will take time to master the violin. Much easier to take pics...
A

I was just wondering .... how do you know when to stop or how far you can focus without the rear hitting the mirror? Is there a way to determine the furthest point you can go without actually doing it until it touches the mirror?

wjlapier wrote:

My Rokkor will not focus to infinity, but mainly because the rear reaches so far into the body of my D700 it hits the mirror. There is very little left of the spacer to sand away.

What a timely thread. I'm expecting mine to arrive today or tomorrow. I'm expecting magic

( this message was left blank )

Very nice pictures here! I just won a Rokkor 58mm 1.2 at ebay, so maybe in a few weeks i'll post some pictures here.

ptys wrote:
What a timely thread. I'm expecting mine to arrive today or tomorrow. I'm expecting magic

It's here

ptys wrote:
ptys wrote:
What a timely thread. I'm expecting mine to arrive today or tomorrow. I'm expecting magic

It's here

Anden wrote:
ptys wrote:
ptys wrote:
What a timely thread. I'm expecting mine to arrive today or tomorrow. I'm expecting magic

It's here


You should be able to do better than that with the Rokkor.

a


Do you mean in terms of the subject matter? I'm focusing it through XTi's viewfinder, so it's really really difficult. I'm waiting for an AF confirmation chip to arrive from Hong Kong...

Yepp. The focussing seems fine.

A

bobbytan wrote:
I was just wondering .... how do you know when to stop or how far you can focus without the rear hitting the mirror? Is there a way to determine the furthest point you can go without actually doing it until it touches the mirror?

wjlapier wrote:

My Rokkor will not focus to infinity, but mainly because the rear reaches so far into the body of my D700 it hits the mirror. There is very little left of the spacer to sand away.




I suppose I could put a mark on the focus ring to remind me where I need to stop. It's near 20ft or so. Far enough for this lens for me.

Here is another one. Cottonwood fluff in midair.

Where's http://www.cogitech.ca/Rokkor/ gone?

to oblivion unfotunately but there is enough knowledgeable folks around here to answer any question you might have about the conversion.