RE: Center Filter--Do you need one?

[YDegroot@xxxxxxx]

I have an odler Brooks Plaubel veriwide 100 with a 47mm Super angulon lens.

Well, this lens certainly wasn't made to be shot at f8!

I did a test ona roll of slow Velvia film to check the light fall-off. 

Well, at f8, it was horrible. 

At f11, a little better

At f22 a whole lot better, almsot not noticeable

At f32 I ws hard pressed to see anything. But f32 is not an ideal aperture.

Conclusion, if you use a cenetr filter and 100 ASA, you still need a tripod to
shoot at f11, because at two stops light falloff it's like shooting through a
f32 aperture.

Because 100 at f16 sunny 16-rule become 1/25 at f16 with filer in place.

If you want sharp pictures, you have to shoot at f16 or f22; I would not
recommend any biiger or smaller apertures.

Don't use over saturated film, liek velvia or Kodak's new VR Ektachrome.

Use regular Ekatchrome Sw or Fuji 100 prof. slide film (Astia)

And shoot f16 or f22 withotu a tropod. Small amount of light falloff, if any,
or if visible,  can be fixed by a computer