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I was hoping to use them for wildlife observing too. I live near a bird sanctuary, where birds from Northern Europe and Canada spend the winter.

Stephen

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Stephen,

Coincidentally, I purchased a 25x100mm last year with the very same intention of using it during the daytime for birds. It was a disaster, way too much CA and too much weight.

Another thing, mounting a 10 pound binocular on a heavy duty tripod and head (Manfrotto 3246 tripod and 503 HDV head) is absolutely no fun to lug around for birdwatching.

Shipping a 25x100mm can be very hard on collimation as well.

I would not recommend anything bigger than 80mm for birding.
80mm cuts the weight in half and is much less of a burden to carry around in the field.

Also, the optics are more forgiving on an 80mm binocular compared to the 100mm. Less CA, less flaring, less coma.

Here is a link for a 30x80mm:

http://www.claritas-online.co.uk/products/observation_binoculars.htm

Stan

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Pentax 12x50mm PCF WP II FMC/WP/FP
Pentax 16x60mm PCF WP FMC/WP/FP
Pentax 20x60mm PCF WP II FMC/WP/FP
Orion 12x63mm Mini Giant FMC/JAPAN
Orion 15x70mm Little Giant II FMC/JAPAN
Orion 16x80mm Giant FMC/JAPAN
Orion 20x70mm Little Giant II FMC/JAPAN
Orion 30x80mm MEGAView FMC/JAPAN
Barska 30x80mm X-Trail LW FC
Burgess Optical Series II 20x90mm FMC/WP/FP

Handel's Messiah**Hallelujah! For the LORD God Omnipotent Reigneth

Edited by hallelujah (06/22/08 02:30 AM)

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