Those are fabulous!

(I took the liberty of editing the link to make it go directly to discoverwildlife.com.)

--Chris S.

It's mostly been things like noticing that my speedlights seem to vary in flash intensity when I crank them down to 1/64, causing uneven frame brightness, or the previous issue of one not firing when it's too close to the transmitter (helped with aluminum foil), since the 20x Mitutoyo certainly doe...

Mkbn, I downloaded the full-resolution versions of your stacks, and layered them up in Photoshop. Then I aligned them, zoomed in, and flashed between layers. (This is what I do when conducting my own lens tests--I find it very sensitive to showing differences.) My sense is that your Mitutoyo lens is...

Offline, some of us on the admin team have discussed reaching out to Tatyana, and I plan to do so. Robert's work is indeed a tremendous resource that we hope will remain. Also, today on Facebook, Tatyana mentioned a video lecture delivered by Robert a few years ago: Photographing Wild Alaska and Jap...

And welllll, if you would feel like (and have time to) test another 20x N.A. 0.42 mitutoyo, I'd definitely love to know if I should have any concerns or comparability to an actual 20x mitutoyo. I wanted to spend part of the next day or two trying out frustratingly (due to my skill level) comparing ...

I regularly test Mitutoyo objectives for forum members, so I've tested far more such optics than I care to count. This is likely far more Mitutoyo objectives than anyone else on the forum has tested. My testing numbers may even exceed the total of all Mitutoyo objectives tested by the entirety of al...

This last one was with different setup and without filters... anybody knows why there is almost no color (except some magenta/purple fringes I removed in post processing)? Bbobby, First, nice image of the solar corona (glowing atmosphere of the sun) during totality! Likely you've combined several e...

Friend and forum member Robert OToole has died. Robert-OToole-bio-pic-300px.jpg (Photo from www.robertotoole.com, which holds the copyright.) Robert posted here as "RobertOToole" for more than eleven years. He also authored and maintained the encyclopedic site closeuphotography.com , where he extens...

Right before that reply, the Yuji were linked (which I found online as well) but they're a bit more pricey. Mkbn, This won't answer your query, as it's neither inexpensive nor more current--but I can add a little information to my post on the Yuji COBs that you mentioned above. I still haven't gott...

Dennis and Scarodactyl, If this is the stand I saw portions of, it is a solid setup and should be very good for Dennis' current purpose--perhaps after some illumination tweaks. If it is this stand, I hard-mounted a stepper motor on its BHMJ focus block. Dennis, with that excellent Mitty glass you ha...

I'm really glad Robert offered to help! I test objectives fairly often for forum members, but will be traveling soon, and would find it ticklish to get someone else's objectives tested and out the door in time.

Your objectives will be in excellent hands with Robert.

--Chris S.

FotoChris, you might be onto something. My rig had some issues initially; among others I had to dial in -22 for the fine focus. Sounds as if you are using autofocus? I would recommend turning it off for critical tests of lens sharpness, especially at magnifications approaching 1x. Here, you probabl...

Dario, My 50x/0.55 Mitutoyo has an "E" serial number. I've used it as a benchmark to test a number of Mitutoyo 50x/0.55 objectives for forum members. Some of these lenses are likely older than mine, and some are definitely newer. My lens has never been second best to any other. So I would advise you...

I'm also a new user of Zerene and my i7 Windows laptop does not run it very well. Welcome to posting! :D The thread Rik linked to--near its end--mentions overheating as a possible culprit for slow PC performance. With a desktop or tower PC, overheating is indeed occasionally the culprit for slow pe...

That one is a beauty. Glad I already have one, or I'd be reaching for my wallet.

--Chris S.