I would like to get help from the experts here to on this label meaning around the camera lens of a camera phone:

1) AF 3.8 mm 1:3.2

2) AF 4.8 mm 1:2.8

I know that AF means Auto Focus, but what is the difference between 3.8 mm and 4.8 mm and also 1:3.2 and 1:2.8

Which camera will produce better picture based on the specs?

Thank you very much...

3.8mm and 4.8 denotes the 'forcal length' of the lens.
while 1:3.2 or the 2.8 denotes the aperture size.

Usually hand phone cam wont telling u how big is the cms/ccd sensor size, and also the FOV multiplier.


A typical digital camera has 1/2.5" CCD, and having somewhere 6x FOV multiplier.

So, in that case, if the lens is 6mm, it means its the same to 6 x 6 = 36mm.

In your camera phone, I assume its somewhere 10x, making it a 38mm or 48mm.

The only thing u can get from reading the spec, is the smaller the aperture number, theoretically u can take better night photo than the other at higher shutter speed

So confusing

One question since we are here.
My cam Fuji 9500 is "supposed" to have a 10.5x zoom (or 300mm)

But when pitted against my Nikon F80, with a 70-300mm lens.. It aint even 300mm! Its more like 150mm compared to my nikon.

Why is that? I Gotta Activate the Digital Zoom to make it on par.. which means its actually a 600mm on a digicam?

ur nikon has multiplier

Thanks friend! So this means 1:2.8 handles bit better than 1:3.2 ...
How about Focal Lenght? 3.8 mm better or 4.8 mm better?

Sorry..hijack again

But its a Film based SLR wor?
SLR's got multiplier oso?