there is onli 2 i know in the market with 10X opitical zoom(compact size), why is it so??? why the zoom do not grow when the maga-pix grow???
htthach said:what i see is that DSLR lens also very commonly made around 3-4x like 17-40, 28-105, 28-105, 16-35, 70-300, 70-200,... and just a few at 18-200
maybe long zoom range is not good for either compact or DSLR
htthach said:but still dun think they are as commonly used as those with small range but better quality i think
I like to own those 2x zooms like 12-24 or 10-20.htthach said:what i see is that DSLR lens also very commonly made around 3-4x like 17-40, 28-105, 28-105, 16-35, 70-300, 70-200,... and just a few at 18-200
maybe long zoom range is not good for either compact or DSLR
compro_1975 said:CA is what???
wildstallion said:Chromatic Abrasions
Clockunder said:Optical zoom in compact cameras is related to the lens focal length vis=a-vis the image sensor size.
Higher zoom means needing longer maximum focal length on the lens.
Higher apparent zoom is inversely proportional to the sensor size and so a higher optical zoom X can be obtained with a smaller sensor. But then, small sensor also means higher and unacceptable noise level.
So the only practical way to have higher zoom is to have longer max. focal length lenses and this means a camera with higher zoom can't be compact anymore.
yanyewkay said:I like to own those 2x zooms like 12-24 or 10-20.
Lenses that cannot zoom also I like, examlpe: 300/2.8 or 600/4..:embrass: