Same objective, dimmer image?

[Jedite83]

I have been using a pair of 7x35's for a while (have had them sense I was a kid) and just got a pair of Celestron Upclose G2 16x62. I took them out tonight and was looking at Jupiter, Orion and M-45 and while I liked that the image was bigger it seemed dimmer.

Dose the additional magnification affect the brightness, or is it the slight size difference.

Thanks,

Jedite83

[Jedite83]

Sorry, title should have been "Similar objective, dimmer image" Spell check messed it up.

Jedite83

[ronin]

Yes, you are collecting much the same quantity of light but putting what you have collected in to a bigger image, so that image is dimmer. Good old birdwatching 8x42's are probably the best overall choce which is I suppose why they are the main ones used by the millions of birdwatchers.

I have assumed the subject title is correct as the binocular specifications are not consistant with the title. Guessing that the 16x62's are a typo ?

[BinocularSky]

As far as I am aware, Celestron do a 16x32, but not a 16x62. Assuming you have the 16x32, they are dim for at least two reasons: one is that a 32mm objective collects less light than the 35mm; the other is the reason cited by ronin. Depending on the quality of the 7x35 you have, a possible 3rd reason is that the 16x32 has a lower transmission factor.

[Jedite83]

Sorry, the Celestron's are 16x32.