High Magnifaction Sony A7r Mark II

justwalking very nice work. I see you know this stuff very well. but if you try to load to large of a image. say it does not upload because of size.
Oops... 300.27Kb won't show on the board
I tryed to put less size .jpg but it won't also
Don't know why, sorry
all you have to do is rename your photo. I just right clip on the photo hit rename. all I do is add a A or B to the letters that are already there. that will allow you to up load your photo. it works for myself

Also did not know how to to edit post, so 19#1084;#1084 need to read as 19mm )

I just use the default settings in the camera, except for auto white balance. In this case, the white balance was probably left at whatever the last ordinary full-coin shot was using. I shoot raw, so it's not clear what affect the settings would really have on the shot. I use Canon Digital Photo Professional to convert these to TIFF files. Again, I'm just using default settings for the conversion.

For this photo, Zerene stacker DMAP mode was used to stack the TIFFs, again with default settings. Zerene Stacker seems to do some kind of sharpening, since full coin shots sometimes look funny after the combine. When I reduce the shots for uploading (not applicable to 100% crops like this), I use GIMP Sinc/Lanczos reduction (without trying to reduce by some exact integer factor). The Sinc/Lanczos resampling seems to have some sort of built-in sharpening, so you don't have to do any manual sharpening after the reduction. GIMP output JPEG quality is usually around 75 (whatever that means).

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For pixel-peeping with the Mitutoyo 10X, here's a 1600% crop of the 9-3 group (645 lines/mm) from a USAF test chart, using white Jansjo light:



This image is actually a stack using 1 or 2 micron step size, where I let Zerene Stacker DMap mode select the sharpest exposure, instead of doing it manually.

Here's a shot where the image from the Mitutoyo 10X is magnified by a 2x Canon teleconverter. This is an 800% crop of the same USAF test chart, which hints at what kind of resolution you'd get with smaller (1.8-1.9 micron) pixels:



This was made using Zerene Stacker PMAX mode rather than DMAP.

the image is of the H on a Canadian dime. the aperture was set at F5.

pepactonius starting to get some where with this mitutoyo lens. here is the lion head a Canadian half dollar. the lens has a very shallow depth of field. I can see thou it is very sharp.

mitutoyo paired up with a rodenstock apo lens. this lens is some thing else. this is a single photo. this way I can take advantage of the aperture on the rodenstock. this lens is incredible.

one thing I have tried. I attached the 10x mitutoyo to the rodenstock lens. I stoped the apecture down as far as it would go. I had almost enough DOF. that one might not need to use focus stacking. keep trying different ways. any thoughts.