Re: [Largeformat] Optimal aperture

[David <davidsnd@yahoo.com>]

Thanks!

--- slberfuchs@aol.com wrote:
> -------------------------- eGroups Sponsor
> 
> As a general rule the optimal lens opening for ALL
> LF lenses is between f16 
> and f32.  Most are optimized to perform best at f22
> with individual tests on 
> individual lenses showing one stop better in either
> direction in some cases.  
> Performance will usually fall off dramatically when
> the lens is used both 
> wider than f16 and stopped down more than f32. 
> There are many taht will tell 
> you they perfer to shoot at f45 or even f64 for the
> added depth of field.  
> Optical laws, however, negate such small stops (whne
> they are not necessary) 
> as other abberations far offset gains in DOF.
> 
> Ted
> 
> 
>