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What is more important transmission or exit pupil size as we age? (1 Viewer)

[email protected]

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Dennis, that's a good idea. I would like to point out that imho slight color weaknesses are hardly detected by such tests. Happy new year to all readers. Best wishes. Jessie
I don't know some of those letters are hard to distinguish if you are color-blind at all. I think it is fairly accurate.
 

Patudo

Well-known member
Normal for me too (mildly reassuring that...). The only Zeiss bino I've noted a green cast in is my old 12x50B Nobilem Spezial.

I did notice when using the Noctivid 8x42 and 10x42 that reds/yellows seemed to stand out. That's not a bad thing in my opinion, given that some of the most distinctive (and attractive) field marks are those colours.
 
Did it yesterday and yesterday my color vision was normal.
Can't say anything about Zeiss simply because I have no Zeiss - I became allergic to Zeiss in my first days here because a couple of alphadiots spoilt it for me. I originally joined to find info on Zeiss/Leica (zhe djerman glass is zhe best, yah?!) but I have now bought Nikon porros with a APM and a Habicht on the way too.
My oh so inferior Steiners are totally neutral - at least to my eyes.
 

[email protected]

Well-known member
Supporter
Did it yesterday and yesterday my color vision was normal.
Can't say anything about Zeiss simply because I have no Zeiss - I became allergic to Zeiss in my first days here because a couple of alphadiots spoilt it for me. I originally joined to find info on Zeiss/Leica (zhe djerman glass is zhe best, yah?!) but I have now bought Nikon porros with a APM and a Habicht on the way too.
My oh so inferior Steiners are totally neutral - at least to my eyes.
What Nikon porros, APM and Habicht did you buy? Just curious. I like porros.
 

Alexis Powell

Natural history enthusiast
United States
Did the test. Normal. I see a greenish bias to my Zeiss 8x25 Victory Pocket. It is obvious in use and is also especially easy to see when looking through the bins backwards held against a white paper. Is this result interesting? Does is solve any arguments? Glad if so.

--AP
 

Jessie-66

Germany
Did the test. Normal. I see a greenish bias to my Zeiss 8x25 Victory Pocket. It is obvious in use and is also especially easy to see when looking through the bins backwards held against a white paper. Is this result interesting? Does is solve any arguments? Glad if so.

--AP
Alexis, thank you for your feedback. Now we have the first proband. Do you also see the green colour cast after a little longer observation, after a few minutes? When I change the colour temperature of my TV, I don't notice it very quickly.
If you have similiar bins (without "green cast" but with equal magnification), this experiment with bins and printed off test pictures would be interesting for you and others:
Larger objective lens diameters do not matter in bright ambient light, the 8x25 is the most demanding. Unfortunately, you will not be able to hold the small 8x25 as stable as a more voluminous pair of binoculars. Probably this will distort the results. Can you use a tripod for both bins? If needed, a provisional arrangement (stopgap), adhesive tape?
Jessie
 
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Alexis Powell

Natural history enthusiast
United States
...Do you also see the green colour cast after a little longer observation, after a few minutes? When I change the colour temperature of my TV, I don't notice it very quickly.
If you have similiar bins (without "green cast" but with equal magnification), this experiment with bins and printed off test pictures would be interesting for you and others...
I am a photographer and devote a bit more consciousness than the average person to trying to be aware of the color temperature of light, esp. when dealing with mixed light sources. Nevertheless, like everyone, my eyes/brain aim for 'auto white balance'. However, I usually look through bins for brief periods of time, so the comparison to regular vision (eyes only, between moments of lifting the bins to my eyes) keeps the bias visible. With bins, slight bias doesn't bother me much. I have other bins with amber or other biases. Only those with strong yellowish bias bother me much. I like a bit of magenta bias.

--AP
 

[email protected]

Well-known member
Supporter
Did the test. Normal. I see a greenish bias to my Zeiss 8x25 Victory Pocket. It is obvious in use and is also especially easy to see when looking through the bins backwards held against a white paper. Is this result interesting? Does is solve any arguments? Glad if so.

--AP
If you see it against a white paper that is definitely a green bias.
 

[email protected]

Well-known member
Supporter
Alexis, thank you for your feedback. Now we have the first proband. Do you also see the green colour cast after a little longer observation, after a few minutes? When I change the colour temperature of my TV, I don't notice it very quickly.
If you have similiar bins (without "green cast" but with equal magnification), this experiment with bins and printed off test pictures would be interesting for you and others:
Larger objective lens diameters do not matter in bright ambient light, the 8x25 is the most demanding. Unfortunately, you will not be able to hold the small 8x25 as stable as a more voluminous pair of binoculars. Probably this will distort the results. Can you use a tripod for both bins? If needed, a provisional arrangement (stopgap), adhesive tape?
Jessie
Jessie. That would be an excellent test. Alexis, can you do that?
 

[email protected]

Well-known member
Supporter
Normal for me too (mildly reassuring that...). The only Zeiss bino I've noted a green cast in is my old 12x50B Nobilem Spezial.

I did notice when using the Noctivid 8x42 and 10x42 that reds/yellows seemed to stand out. That's not a bad thing in my opinion, given that some of the most distinctive (and attractive) field marks are those colours.
 

[email protected]cast.n

Well-known member
Supporter
Normal for me too (mildly reassuring that...). The only Zeiss bino I've noted a green cast in is my old 12x50B Nobilem Spezial.

I did notice when using the Noctivid 8x42 and 10x42 that reds/yellows seemed to stand out. That's not a bad thing in my opinion, given that some of the most distinctive (and attractive) field marks are those colours.
How do you like the 12x50B Nobilem Spezial? Where did you get it? Those are getting rare.
 

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