Thanks Pau, but I found an Olympus CHBS manual online and oddly each division is actually 2.5 microns, or 500 microns per revolution. In this case WeMacro gives the minimum step size as 0.23 micron.

Thanks for all the positive comments guys It makes for a nice compact unit.

Lou, I didn't realize the micro-mate allowed such small steps..very intriguing. I need to find out how many microns per revolution my fine focus has.

Brad

After reviewing some of the remarkable rigs people have constructed, I decided that I needed to improve my setup. I had a machine shop precisely drill four holes in the base of my vertical WeMacro stand. This allowed my focus block/frame (from an old Olympus CHBS microscope) to be bolted on. The bac...

Thanks..Christmas Mine looks like a good possibility.

Those were the days for collecting. Not many easy pickings left anymore.

Thanks..I had to borrow it from a friend!

The sample is from Arizona, not sure which mine. Beautiful material. Field of view is about 2.2mm wide. The original image looks slightly sharper before down-sizing for the post. Thanks for the comments.

Thought I'd post this stack..shot with a T7i camera w LED lighting using a 10X Mitutoyo objective on 200mm Nikon tube lens. The green Dioptase crystals produced strong halos and shadows so I suppressed some of them by de-saturating the Cyan in those areas. A form of cheating I suppose? Comments welc...

Sorry I have sent the A7Riii camera back and can't provide any new images, but here is a crop with contrast and clarity boosted. No sharpening. This is a JPEG stack taken using EFSC at 1/15 sec with LED lighting. You can see the diffuse "waffle" or striped pattern I referred to. It might help to sta...

I believe you are correct about the ports. The A7Riii does indeed have both a USB C port for tethering, and a Sony USB "multiport" for shutter triggering. It works well with the Wemacro rail as long as you have a Sony connector cable. In my previous post Beatsy explained that he uses an Infrared rem...

Yes, I saw there is some software that works on RAW files, but the thought of another processing step doesn't appeal to me. If anything, Sony should fix this in-camera.

I have been encountering a diffuse waffle pattern, visible in JPEG stacks as light colored noise over a dark background. I assume this is the same basic "PDAF" (phase detection auto focus) issue discussed elsewhere. Admittedly this is not a complete show stopper as it can largely be edited out, howe...

Alnitak: Thanks for your clear answer! This is very helpful. It seems there are two good options here.

Wow, those were rapid replies...

Beatsy: Thanks for your detailed response! It sounds like the IR remote is a
great solution.

mawyatt: I do use the Wemacro stand and find it works very well. Sorry if I
was unclear.

Hi All, I am considering the purchase of an A7Riii Sony mirror-less camera to be used with a Wemacro rail (a vertical setup on the Wemacro stand). I'm currently using a Canon T5i and enjoy using the EOS utility software for tethering to a PC in Live View. I have read a few posts by people using an I...