At the moment, this convertion is in the middle stage and the far focus is about 3 meters - need to trim Mamiya mirror and position the lens in its mount a bit deeper inside the mirror box, in order to achieve infinity focus and need to make a new aperture control lever or ring. I just want to know, would this lens cover the larger sensor area and what drawing it will show.
The result really amazed me in terms of double character of the lens. It could be more pronounced then the Oly OM 55 1.2 and it could defocus the background like 200mm 1.8
So here are just test snaps handheld so it is possible that there are some mis-focused and out of focus objects (I have already bought microprism screen and will install it when the mirror will be trimmed)
Impressive amount of work. I bet it would make engineers who worked on both pieces of equipment happy, to know they someone is tinkering with their work, adapting to new and heretofore unthought of uses. "Homebrew" as they say.
As Pentaxshooter said, I'm impressed there's enough image circle!
I always suspected from the total lack of falloff at f1.2 (I'm ALWAYS adding vignetting with my EFII lens) that it has a much-larger-than-35mm image circle. Very interesting!
There is one trick - it is possible to use this combo if you remove the last lens element - which is the element of floating design and it is very useful in 35mm format. In this case you have 100% coverage without any sign of the vignetting wide open.
So finally finished - have shaved the mirror about 7mm - really hard task, the mirror is thick and have aluminium base plate.
will try to show more samples from this combo, but after all these 10 fast 50-58 f1.2 that i have tried - this one is out of this world - it is 2 (or more) times extraordinary then Oly 55 1.2
Check this out - it is absolutely crazy - under direct sunlight without hood
Wow, very interesting indeed. Makes me want to try this with my digital back on the Mamiya! Please let me know if you ever bring this kit to Tallinn. Would be great to see it in person and meet such a passionate gear head
Wow, you really need a specific point for sharpness reference or else the whole image might appear soft at these extraordinarily wide apertures. Last couple of shots almost feels like a lensbaby. This stuff is never-seen-before material - very cool, Dmitry.
Wild stuff! It looks like the front-bokeh (foreground) has strong biotar-type characteristics, very swirly, while the rear-bokeh is a lot like OM 55/1.2 with a heavy dose of cat-eye type stuff showing too. Very cool!
so, do you have to remove the rear floating element to get full coverage of the image circle? Or can you get full image circle coverage w/o removing that?
