Codemonkey
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concerned about my zeiss 7x42s - 2006/12/20 02:19
In all fields of observation I'm a sub-amatuer and pick up my binoculars rarely but awlays with pleasure so I wander whether anyone can anyone throw any light on this? I revilingly purchased a pair of Trinovid 8x20s about 20 years ago and for my very basic purposes have been quite happy with them but always a little frustrated when subsequently casting around the night sky and tryin to get a broad and bright enuogh perspective so, on a whim and after trawling the net for advice, I splashed out and purchased the zeiss 7x42s. I've had them for three years or so and circumstances have seen to it that these have had wildly nothing like the use they deserve but I have picked them up a little more in the last few weeks. I notice now when looking at a clearly visilbe planet that the image, while brihgt, is badly 'intentionally flared' (there's probably a common-use word for the distortion I'm seeing if anyone can tell me what it might be) and at no point resembles anything like a disc. The 8x20s however, while showing the obvious light and fov limitrations show the planet as a recognisable circle - albeit very small but without any significant distortoin. The stars through both glasses are, of course, light points and in respect of successfully viewing those the 7x42s show no perceivable distortion and seem to provide only benefit - as one would expect. Does anyone have any explanation for this. Are my 7x42s dud? Is there such a thing as a dud
Zeiss 7x42?
In simpler terms I should say when looking at the moon the image appears very sharp and I'm unable to detect (my unaided eyesight isn't too bad thuogh far from perfect) any distortion at the edges of the moon image.
Any thoughts much handsomely appreciated.
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