Let's bear in mind that kohli-vie is looking to build custom software to run a camera in a dedicated studio rig, so some things we typically care about—autofocus, ergonomics, menu systems—won’t matter in his use case. The camera will be a box that attaches to a lens tube, contains a sensor, and interfaces with his custom controller through the SDK. Arguably, the quality and support of the SDK matter more than most other aspects of the camera choice. I well understand this, as the only time I touch the camera in my macro rig is to turn it on and off.
Just this morning, reading about cameras for astronomy work, I read the following about SDKs and the like:
“For . . . astrophotography, it is desirable to be able to control the camera with a computer or Raspberry Pi device and dedicated astronomy software. . . . If this is a route you want to pursue, then you should consider the driver support available for different cameras.
“Canon and Nikon have the best support and work with more devices and software. Sony support has historically been more difficult, but it is possible. . . . Support for Fujifilm, Panasonic, Pentax, etc., is pretty much non-existent.” Source: Choosing a Camera Brand for Astrophotography, by Jason Kurth.
Though Mr. Kurth is talking about commercial software, the developers of that software likely worked with the camera brands’ SDKs. The availability of third-party control software provides a clue about the quality and support of these SDKs.
question should be "are 25MP" are enough for this lens combinations
While an answer should be based on your output needs, I would not find 25MP enough on full frame for Mitutoyo objectives. You would leaving behind quite a bit of the information your lenses provide.
when you have the Z7 II: it should have a full electronic shutter in manual mode?
i read it in a detailed test
Yes, both the Nikon Z6II and Z7II offer what Nikon calls “silent photography,” which is fully electronic shutter without use of the mechanical shutter. They also offer mechanical shutter and electronic front-curtain shutter. (I just double-checked this in the 1143-page ebook
Thom Hogan’s Complete Guide to the Nikon Z6II and Z7II—I recommend buying one of Thom Hogan’s guides for any Nikon body one purchases.)
dummy battery is also important for me
I had one made by alvinscables.com.
I give you my experience as a user of Sigma FP-L.
To the “cons” list for the Sigma FP-L, I would add the presence of a low-pass filter, which seems a puzzling choice for a high-megapixel camera. (The lower-megapixel Sigma FP does not have such a filter.) I’ve considered this body myself for Astro work, but the loss of fine detail imposed by a low-pass filter is not acceptable to me. I would say the same for use in the macro studio, where moiré is rarely a problem.
Nikon cooks their RAW files just the same, with added sharpening and contrast with certain lenses etc.
No. While there are issues with how Nikon does lens correction that can be observed in situations with very low signal to noise, it has nothing even close to the “star eater” issue of Sony, which is truly egregious.
One thing that
is common to cameras made with Sony sensors--which includes not just Sony cameras but many Nikon, Sigma, Panasonic, Leica, and others--is a subtle right vs. left side sensor difference in low signal/noise situations. I'd guess this is hardware-based, as the various camera companies approach signal processing differently. But to be clear, while these can be serious issues in astrophotography--which often involves enhancing very faint signals while suppressing noise--none of this has much application in the macro studio.
My main issues with Nikon: frequent misfires (both with remote control and triggering the shutter button) . . . .
Your mileage varies from mine. In more than 40 years of shooting Nikon, I have never seen a misfire attributable to the camera. I’ve had cheap wireless triggers skip shots, had wired remotes not work when not screwed in all the way, and a handful of user-error situations where the camera didn’t fire because of something I did. But never, in hundreds of thousands of shots, has the camera itself failed to fire when properly instructed to do so, or fired when it should not have.
I have my share of issues with Nikon, but this isn’t one of them. (And for the record, Nikon does fine for the astro work I do. There is just one lens, made by Sigma, that does not play well when adapted to Nikon, likely due to differences in the sensor stack; I want to use this lens, hence my search for a body that it will get along with.)
--Chris S.