Ant with Zeiss Semiplan 6.3x and Lomo 3.7x

[cecliii]

Hello this is my first post
I use Nikon D3400 and two microscope lenses : Carl Zeiss Jena semiplan 6.3x 0.16 160 and Lomo 3.7x/0.11

This photo is with Carl Zeiss Jena semiplan 6.3x 0.16 160
178 frames-Zerene Stacker ISO 100/ Sec 2''/ 20um


This photo is with Lomo 3.7x/0.11
86 frames-Zerene Stacker ISO 100 / Sec 2''/ 40um

[Lou Jost]

Very nice. It's interesting to me to see the Zeiss used (presumably) without eyepiece correction and still giving an excellent result. People usually say that Zeiss objectives need eyepiece correction, so I have always avoided them.

[cecliii]

Very nice. It's interesting to me to see the Zeiss used (presumably) without eyepiece correction and still giving an excellent result. People usually say that Zeiss objectives need eyepiece correction, so I have always avoided them.

Carl Zeiss Semiplan 6.3x does not need correction

[Lou Jost]

Is that true of some other Zeiss objectives as well? Is there a way to know which ones do and which ones don't require it?

[cecliii]

Is that true of some other Zeiss objectives as well? Is there a way to know which ones do and which ones don't require it?

I know of personal experience for Zeiss Semiplan 6.3x dnd Zeiss Semiplan 3.2x that they do not need

[Pau]

Many pre-war microscopes used compensating eyepieces only for the high magnification and high correction objectives like the apochromats because of the difficulty of making full corrected complex objectives.
Lately they applied the same need of compensation for all the objectives avoiding the need of changing eyepieces when changing objectives.
Both Zeiss Jena and Lomo directly derived from pre-war Zeiss models and maintained this situation for some time while Zeiss west early switched to the second approach.
So yes, many Zeiss Jena and Lomo low power objectives are good for "macro" work without compensating eyepieces while Zeiss west (Z. Winkel, Z. Germany, Z. West Germany...) aren't

[cecliii]

Many pre-war microscopes used compensating eyepieces only for the high magnification and high correction objectives like the apochromats because of the difficulty of making full corrected complex objectives.
Lately they applied the same need of compensation for all the objectives avoiding the need of changing eyepieces when changing objectives.
Both Zeiss Jena and Lomo directly derived from pre-war Zeiss models and maintained this situation for some time while Zeiss west early switched to the second approach.
So yes, many Zeiss Jena and Lomo low power objectives are good for "macro" work without compensating eyepieces while Zeiss west (Z. Winkel, Z. Germany, Z. West Germany...) aren't

Thank you for the information.

[Lou Jost]

Yes Pau, thanks very much, that is very useful information that I had never seen before.