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briantilley

Paignton, UK
30229 posts

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"RE: Standard f-Stops"

briantilley Moderator Deep knowledge of bodies and lens; high level photography skills Donor Ribbon awarded for his support to the Fundraising Campaign 2014 Nikonian since 26th Jan 2003
Sun 10-Mar-13 10:36 AM

Lenses (or most of them, anyway) are not limited to full-stop steps in aperture. An f/1.8 lens is two-thirds of a stop slower than an f/1.4 lens.

The difference between lenses of f/1.8 and f/1.4 is not really in the physical diaphragm itself.

As the aperture opening gets larger, lenses tend to need a more complex (and hence more costly) optical design in order to deliver good image quality when used wide open.

Brian
Welsh Nikonian

A general, generic topic Standard f-Stops [View all] , dperry23 , Sun 10-Mar-13 04:24 AM
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