How to check when buying a lens ?How to test the lens ?

How to test the lens in the shop ?

What's in the lens marking numbers denote f3.5-6.3?

The labeling designation of universal lens has f3.5-6.3.These designations are somehow connected with fotosiloy?

Which of the following digital cameras to choose?

Nikon Coolpix L810, Nikon Coolpix L820, Nikon p500, Canon PowerShot SX20 IS, Fujifilm finepix HS 20 EXR, Fujifilm FinePix S4000, Fujifilm finepix s4200, Fujifilm FinePix S4500?

What camera models are best for normal shooting ?

Amateur shooting outdoors, at sea, in the city.

Which Soviet -aperture lenses ?

need for CANON 5D mark II

How to photograph fireworks ( fireworks ) ?

How to shoot fireworks on the camera to be beautiful and clear photos ?