• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
Where premium quality meets exceptional value. ZEISS Conquest HDX.

Brief Comparison between Zeiss Conquest HD & HDX (in 10x32 format) (1 Viewer)

Transmission is not brightness.

I think Henry's method demonstrates color bias, but it does not quantify it, nor standardize it.

I'm not sure that is possible. If it is, you'll have to tell me how.
 
Last edited:
Maljunulo post 43,
You are right: transmission is not equal to brightness. That is often a matter of confusion, therefore I have written a review paper entitled "Color vision, brightness, resolution and contrast in binocular images", a review of published data" , May 2013, 30 pages. It can be found on the WEB-site of House of Outdoor.
Gijs van Ginkel
 
From #45 above,
Maljunulo post 43,
You are right: transmission is not equal to brightness. That is often a matter of confusion, therefore I have written a review paper entitled "Color vision, brightness, resolution and contrast in binocular images", a review of published data" , May 2013, 30 pages. It can be found on the WEB-site of House of Outdoor.
Gijs van Ginkel

In addition to the paper Gijs refers to, he and I had an exchange some months back when I was struggling with the distinction between transmission and exit pupil. Assuming others may be wondering, with his OK, here it is...

9/26 - me
"Thank you Gijs,
I bow to your expertise, easily. Here's why I was thinking... maybe?
I get 90% light transmission measured for a particular binocular means 90% of light passes from front to back, period, full stop. That is a quality of that bino, doesn't have anything to do with whats happening outside the unit. 90% of available light makes it through. Right?

As well that bino has an exit pupil. So same bino, 2 different attributes. But don't both have to do with what I see? If things are heading towards dark, (late afternoon), available light starts to diminish. The bino still provides 90% of that. Combo of its EP and my eyes ability to dilate effects how I perceive it, though. 90% of less light would seem er.. darker, while the ambient light, EP/pupil thing is the actual.

Hmm, maybe I just answered my own?
Tom"

10/7 - Gijs
"Tom,
You hit the nail on the head,
Best regards,
Gijs"
 
Are you planning on reviewing the 8x versions on the Conquest HD & HDX? Thanks for the informative comparisons, Jackjack!
sorry for late responses.
I have compared 8x42s and the result is very similar with this.
every major changes that I said here have maintained on 8x42 almost as same as 10x32.
 

Users who are viewing this thread

Back
Top