Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Moderators: rjlittlefield, ChrisR, Chris S., Pau
Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Hey guys,
I made a comparison of the following microscope lenses:
Lomo 4 0,12 160/0
Lomo 3,7 0,11
CZJ Semiplan 3,2 0,10 160/0
My equipment:
CZJ Monocular Microscope (1931)
Nikon D3400 (APS-C)
Mitutoyo Cold Light Source
The Setup was exactly the same for every lens. Order is always: Lomo 4 / Lomo 3,7 / CZJ 3,2
Let us start with the whole subject:
now the center crops:
last but not least the corner crops:
My conclusion:
The Lomo 4 0,12 is overall the best one. The Lomo 3,7 0,11 has less resolution, contrast and sharpness. The CZJ 3,2 0,10 Semiplan has the best contrast and sharpness levels, but the quality-drop in the corner is easiliy visible.
kind regards from Germany,
Simon
I made a comparison of the following microscope lenses:
Lomo 4 0,12 160/0
Lomo 3,7 0,11
CZJ Semiplan 3,2 0,10 160/0
My equipment:
CZJ Monocular Microscope (1931)
Nikon D3400 (APS-C)
Mitutoyo Cold Light Source
The Setup was exactly the same for every lens. Order is always: Lomo 4 / Lomo 3,7 / CZJ 3,2
Let us start with the whole subject:
now the center crops:
last but not least the corner crops:
My conclusion:
The Lomo 4 0,12 is overall the best one. The Lomo 3,7 0,11 has less resolution, contrast and sharpness. The CZJ 3,2 0,10 Semiplan has the best contrast and sharpness levels, but the quality-drop in the corner is easiliy visible.
kind regards from Germany,
Simon
Videos & Focus Stacking with microscopes:
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
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Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
This is a very interesting set!
I notice the lighting is different with the lomo 4x vs the other two (fewer highlights). Is it because of lower working distance?
I notice the lighting is different with the lomo 4x vs the other two (fewer highlights). Is it because of lower working distance?
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Hey,
the highlights must indeed be related by the working distance. otherwise it would be the coating. The CZJ has an inset lens, the Lomos have not.
the highlights must indeed be related by the working distance. otherwise it would be the coating. The CZJ has an inset lens, the Lomos have not.
Videos & Focus Stacking with microscopes:
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
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- Contact:
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
To my eyes the two objectives are about the same in the center, but the 3.7x is slightly better than the 4x in the corner. It's an amazing result given the strong performance of the 3.7x!
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
I also think the 3.7 wins in the corner, but the 4 is really good.
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Seems that my conclusion may be wrong:)
Did you notice the fine hairs on the wings? These seem to be way better resolved with the Lomo 4 compared to the 3,7.
Did you notice the fine hairs on the wings? These seem to be way better resolved with the Lomo 4 compared to the 3,7.
Videos & Focus Stacking with microscopes:
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
I agree with you in the center. The 4x is significantly better there. What do you think about the corners?
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Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Hard to say here... to me...
The 4x seems a tad better in the centre, whereas the 3,7x yields better corners.
Pretty amazing, the 3,7x holds up incredibly well for such a tiny lens of such age. If it was still at $30 a pop, it's unbeatable in terms of value for money. Even at the inflated prices we see now, it's still really decent!
The 4x seems a tad better in the centre, whereas the 3,7x yields better corners.
Pretty amazing, the 3,7x holds up incredibly well for such a tiny lens of such age. If it was still at $30 a pop, it's unbeatable in terms of value for money. Even at the inflated prices we see now, it's still really decent!
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
The Lomo 4 seems to be indeed better at the center. But the overall winner for me is now the Lomo 3,7.
I examined the high res pictures again and the Lomo 3,7 is definitely better in the corners. Especially on the end of the wings.
I paid 79.99$ for it and it is definitely worth the money. It seems that I got a good copy of this lens.
I will use the Lomo 4 for small round objects and the Lomo 3,7 for extensive objects.
Here is the postprogressed Version of the Stack with the Lomo 3,7:
I examined the high res pictures again and the Lomo 3,7 is definitely better in the corners. Especially on the end of the wings.
I paid 79.99$ for it and it is definitely worth the money. It seems that I got a good copy of this lens.
I will use the Lomo 4 for small round objects and the Lomo 3,7 for extensive objects.
Here is the postprogressed Version of the Stack with the Lomo 3,7:
Videos & Focus Stacking with microscopes:
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
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- Posts: 3438
- Joined: Sat Nov 20, 2010 10:40 am
- Location: Santa Clara, CA, USA
- Contact:
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Can you comment or provide some data on field flatness of the 4x? We know the 3.7x is not flat and thus requires a deeper stack than would normally be necessary to bring the corners into focus. Did the 4x behave the same? I don't use the 3.7x much due to the flatness issue. Other ~4x objectives are available which are nearly as sharp and are flat-field. It may seem correctable simply by shooting deeper stacks, but for 3D rendering the field shape is convolved with the object shape, and any non-flatness will distort the 3D rendering.Soki wrote: ↑Mon Jul 13, 2020 12:36 amThe Lomo 4 seems to be indeed better at the center. But the overall winner for me is now the Lomo 3,7.
I examined the high res pictures again and the Lomo 3,7 is definitely better in the corners. Especially on the end of the wings.
I paid 79.99$ for it and it is definitely worth the money. It seems that I got a good copy of this lens.
I will use the Lomo 4 for small round objects and the Lomo 3,7 for extensive objects.
Here is the postprogressed Version of the Stack with the Lomo 3,7:
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
They both seem to behave the same. I used 114 pics for the 3,7 and the 4 (115 for the 3,2 Semiplan).
Videos & Focus Stacking with microscopes:
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Ray, what's your current favorite 4x lens or objective for full frame?
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Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
I think you mentioned a differen e in woeking distance in the other thread--is that correct or am I misremembering?
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
Yes, the working distance of the Lomo 4 is way shorter than that of the Lomo 3,7.
Videos & Focus Stacking with microscopes:
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
https://m.youtube.com/channel/UC8k7VLFX1rK40TCciz9DdHA
https://www.instagram.com/microscopic_nations/
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- Posts: 1631
- Joined: Sat Apr 14, 2018 10:26 am
Re: Stack Comparison with pics: Lomo 4 vs Lomo 3,7 vs Zeiss 3,2
That's too bad, though not necessarily a dealbreaker depending on the subject. How short are we talking, roughly?