Connecting the RMS lens to the camera.

Hello Myron ,

Thats good question, I will point this to some of our members who does extreme macro photography

Chavezshutter MinitecaPhotographie Sergey Prokofiev Y3ll0www

Hi,

There are 2 types of microscope objectives lenses - finite and infinite. The Plan 4/0.10 160/0.17 lens you mention is a finite lens. I have the same lens but I prefer bellows instead of an extension tube: bellows and x10 micro. The second photo you have shows a setup for an infinite microscope objectives lens, these type of microscope objectives do not focus to a point for the camera sensor unlike finite lenses and therefore you need a secondary lens like 55-200mm lens to get an image unto the sensor. I have not personally used infinite microscope objectives. The other piece of equipment shown in the second photo is an automatic macro rail, these can be used with both finite and infinite setups and are almost essential for extreme macro because of the amount of shots required for extreme macro which makes manual macro rails impractical and tedious work. After 20 or so shots an automatic rail becomes a much quicker and simpler process and manual not so.

I don't know much about the cone RMS adapter having only used the other type, I vaguely remember something about possible flare with the cone one but I am 100% uncertain so don't quote me on that last one.

Myron said:

Chavezshutter Thank you!
Concerning " I prefer bellows instead of an extension tube" - I think so too. I have both options.
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Chavezshutter "I have the same lens" - Are you happy with this lens? Also wondering if there is a vignette?

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The lens is great for the price, other lenses with similar image quality sell for much higher prices. I have not used the lens enough to be honest but I do have some projects coming up where I will get to use the lens more. I am more of a live subject macro shooter personally. One day I might dive into extreme macro with dead insects and the preparation work that all of that involves but for now I have only used the lens on simple subjects like crystals ( see here ), I was pretty new to stacking software and auto rail but it wasn't a bad result.

There is some vignetting but for my image that wasn't an issue. I use a number of vintage lenses on my FF camera and dont mind vignette as I am often adding it in anyways in post. If the vignette is too severe I go into crop mode to trim any edges that have no image for full frame sensor. Center of the lens is definitely where you want to have your subject whenever possible with this lens.