Want to learn more about eyepiece
Posted: Fri Mar 04, 2022 1:05 am
Friendly greetings !
So now I have 2 microscopes (+ a cheap binocular) :
- Leitz Dialux from 1953
- Nachet NS400 from 80~90's something (not really sure)
I got both for fairly cheap but dirty/damaged/incomplete.
Anyway, with your help + Facebook + Discord + google. They're both useable and clean enough.
I'm also into photography and video since a long time (I even have a Leica M Monochrom), I'm also self taught in geometric optic and physical optic.
I can't do the math but I know the general principle of both. (even if I'm still confused about a lot of things of course)
Being into photo/video, I somehow focused on the objective and totally forgot about the eyepiece.
I was a bit frustrated about the tiny front lens of the Leitz eyepiece, and the lower FOV, but I didn't really think too much of it.
Yes, it's turning into a long post I suppose.
An acquaintance pushed me to get the Leitz (and I have no regret whatsoever, thank you) and hinted me that it would have excellent quality.
I was a bit disappointed at the quality at first but then I found out that the Leitz was extremely dirty, put a lot of hour into cleaning it. I disassembled and reassembled it completely (except some obvious "do not touch" part with springs are gear ball that wouldn't contribute to optical quality anyway)
Now the Leitz is clean, as clean as the Nachet that I didn't disassemble due to its complexity and my inexperience.
Yet, the Nachet still had a higher image quality overall by a large margin. Of course it have stuff like kohler illumination and 2 diaphragm and stuff that the Leitz don't have, but I knew that wasn't the main problem.
At some point in order to check if I had to clean the 100x objective : I swapped the eyepiece and put the Nachet eyepiece on the Leitz Microscope.
Massive improvement !! wowzer !
I'll say it : the Leitz eyepiece I have s*ck, hard, at least compared to the (much?) more modern Nachet Eyepiece.
Are the Nachet eyepiece really good ? No idea.
But now I want to learn more about eyepiece. I feel so dumb about ignoring it entirely while it's obvious that it's an integral and important chain of the light path.
Simple design, good brand, what could possibly go wrong ? well... something... (very) apparently.
And I don't find much information about it.
I find that there are different type, and they're mostly marketed around confort of use (or specialized eyepiece) but nothing much about quality.
Official brand website are super cryptic about them too.
Do you know good ressources about it you can share ?
I want to replace the Leitz eyepiece by something of better quality and yet still affordable .
I don't even know about a good price range for eyepiece. It goes from $20 to infinity, as usual...
I'm not strictly looking for pure buyer advice but more about the fundamental of when to use what.
They have diameter, magnification, no specific tube length, of fairly simple design.
That's pretty much the limit of my knowledge specific to eyepiece (then various level of aberration correction and different material or coating, just like any other optical elements).
That's all I know about it.
some pics of my 2 microscopes & eypieces, for comparison
Thank you.
So now I have 2 microscopes (+ a cheap binocular) :
- Leitz Dialux from 1953
- Nachet NS400 from 80~90's something (not really sure)
I got both for fairly cheap but dirty/damaged/incomplete.
Anyway, with your help + Facebook + Discord + google. They're both useable and clean enough.
I'm also into photography and video since a long time (I even have a Leica M Monochrom), I'm also self taught in geometric optic and physical optic.
I can't do the math but I know the general principle of both. (even if I'm still confused about a lot of things of course)
Being into photo/video, I somehow focused on the objective and totally forgot about the eyepiece.
I was a bit frustrated about the tiny front lens of the Leitz eyepiece, and the lower FOV, but I didn't really think too much of it.
Yes, it's turning into a long post I suppose.
An acquaintance pushed me to get the Leitz (and I have no regret whatsoever, thank you) and hinted me that it would have excellent quality.
I was a bit disappointed at the quality at first but then I found out that the Leitz was extremely dirty, put a lot of hour into cleaning it. I disassembled and reassembled it completely (except some obvious "do not touch" part with springs are gear ball that wouldn't contribute to optical quality anyway)
Now the Leitz is clean, as clean as the Nachet that I didn't disassemble due to its complexity and my inexperience.
Yet, the Nachet still had a higher image quality overall by a large margin. Of course it have stuff like kohler illumination and 2 diaphragm and stuff that the Leitz don't have, but I knew that wasn't the main problem.
At some point in order to check if I had to clean the 100x objective : I swapped the eyepiece and put the Nachet eyepiece on the Leitz Microscope.
Massive improvement !! wowzer !
I'll say it : the Leitz eyepiece I have s*ck, hard, at least compared to the (much?) more modern Nachet Eyepiece.
Are the Nachet eyepiece really good ? No idea.
But now I want to learn more about eyepiece. I feel so dumb about ignoring it entirely while it's obvious that it's an integral and important chain of the light path.
Simple design, good brand, what could possibly go wrong ? well... something... (very) apparently.
And I don't find much information about it.
I find that there are different type, and they're mostly marketed around confort of use (or specialized eyepiece) but nothing much about quality.
Official brand website are super cryptic about them too.
Do you know good ressources about it you can share ?
I want to replace the Leitz eyepiece by something of better quality and yet still affordable .
I don't even know about a good price range for eyepiece. It goes from $20 to infinity, as usual...
I'm not strictly looking for pure buyer advice but more about the fundamental of when to use what.
They have diameter, magnification, no specific tube length, of fairly simple design.
That's pretty much the limit of my knowledge specific to eyepiece (then various level of aberration correction and different material or coating, just like any other optical elements).
That's all I know about it.
some pics of my 2 microscopes & eypieces, for comparison
Thank you.