"I don't think a 50x HR 0.75 NA is going to fall (gently?) from the sky at me anytime for an unreal price :D" Well, you already have something better than that (same NA and with a FOV more than twice as large), and for $100! The 20x/0.75s are awesome but there is some difference between 1mm of work...

I am sorry to say the 10x and 20x are awesome jn good condition and should definitely be sought out. The 10x is pretty often available at affordable prices from what I've seen, the 20x a bit less often.

I shoot aps-c, but on a microscope with coaxial illumination and epi DIC frequently used so messing with the infinity focus isn't really an option.

The lack of coverslip correction on the engineering version would be handy but I'm keeping an eye out for one of those too, deals on S Fluors aren't as common as they apparently once were. Really I should be fine with my az 4x/0.40 at 8x, but having a good enough lens rarely stopped me before.

Robert figured out the identity of these objectives and sent me the information shortly before his passing. Nikon Engineering used to advertise HR objectives which match the specs of the lasertec ones almost exactly (slight difference in working distance that probably comes down to a later design tw...

I think my success rate on used mitutoyo objectives is about 80%, some duds but really not that many. Lower success rate on mitutoyo-alikes.

Yeah, this is a photo macroscope system, nice 10:1 parfocal zoom. It won't cover large formats though. The stand should be of excellent quality.
The main objective might be a Mitutoyo m plan apo. Worth examining.

Usually flatness is corrected for before CA and other distortions so there is a correlation between flat fields and higher image quality, but it doesn't have to be so. The exceptions are usually either rare edge cases where flatness wasn't a priority but IQ was or just weird examples like the Lomo 3...

Congratulations! It looks like it turned out great.

Nikon 160 objectives are generally cover slip corrected so they wouldn't be a good match for wafer work. Their metallurgical objectives are 210 and have to be paired with an illuminator to provide the extra space. Technically they will work with the infinity illuminator and you can fit a finite head...

You can convert your optiphot to infinity correction by using this model of illuminator https://www.ebay.com/itm/135002917288 At the bottom it has the smaller dovetail of a finite Nikon -phot series and at the top it has the larger dovetail of Nikon infinity/Eclipse series microscopes. It convenient...

I would not bet the Shibuya ones are particularly great, and their 7xes and 15xes are usually priced even higher than genuine mitutoyos on the used market (though how that compares to the new price is unclear, the rBay lostings are of very low quality and could be priced higher than new for all I kn...

Read the site, it appears to be AI generated. The above post is contextually nonsensical and seems like it was drawn from sym p le's.

This is not a real poster.

I don't know what to say. I was just talking with him in emails the other week, he found some amazing information for me and we were setting up a test of the lasertec 5x for the future. His lens tests and site were a big part of what got me excited about photomacro, trying different lenses and confi...