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camera lens question
minty:
sorry guys me stupid i was looking at wide angle lens's one was 1.45 and the other was .22x i just wounderd with would give the most picture for the size?
barny:
can you post a link to what your looking at ?
if someting optical is written as 22x, that effectively is 22x the power of the naked eye, e.g. a pair of binoculars marked as 10x40mm is ten times the power of the naked eye with a 40mm lens. A rifle scope marked as 3-9x50 will be three times the naked eye on its lowest setting zooming through to nines time power on its highest setting, looking through a 50mm lens.
A camera lens marked as 17-40mm is 17mm wide and zooms to a 40mm telephoto.
On compact cameras they can describe it as having a 9x zoom and then mention having a 40x digital zoom. The lower figure is generally speaking a proper optical lens being moved forwards and backwards to achieve the desired zoom. Digital zooms (the larger number) are complicated alogarithims that effectivley blow up the centre of the image, hence why they go blocky and pixelatted.
hth
minty:
i will look up the site tommorow and add it to the post
dont forget its .22x
minty:
http://www.amazon.com/Opteka-45x-Wide-Angle-S7000/dp/B000BY1QCG/ref=sr_1_218/103-8962976-0663868?ie=UTF8&s=photo&qid=1187538669&sr=1-218 and http://www.amazon.com/Definition-22x-Fisheye-Lens-Finepix/dp/B0007RVHY4/ref=pd_sim_p_5/103-8962976-0663868?ie=UTF8&qid=1187538669&sr=1-218
i know thay are diffrent lens but which gives the grater view if it makes eny sence both lens come in the others eqiverlent :oops:
Terranosaurus:
So you're talking about screw on adaptors, therefore the 0.22 is a wide angle adaptor and the 1.45 is a telephoto (zoom) adaptor.
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