[LargeFormat] rising front

[philip Lambert]

very helpful. I shall try it out on 6x9 anyway as the lens won't cover 5x4
corners even unraised. Philip
----- Original Message -----
From: "Frank Filippone" <red735i@earthlink.net>
To: <largeformat@f32.net>
Sent: Friday, July 06, 2001 6:47 AM
Subject: RE: [LargeFormat] rising front


> The 47 will probably not vignette..... 8mm is about 1/3 of an inch.....
but
> that means you will rise the lens by 1/3 divided by 4 inches, or about
1/10
> of the frame..... that is really a small amount....try it, but the results
> may disappoint you....
>
> If you try for more rise, the lens may vignette.... the lens' image circle
> may be too small to now cover the negative..... an easy way to tell is to
> try it out: Mount the lens ( sometimes easier using a cardboard LB for
these
> experitments) with the rise you expect then look through the corners of
the
> GG ... if you can not see through the lens to your subject at the F stop
you
> wish then the lens is vignetting.....
>
> Frank Filippone
> red735i@earthlink.net
>
>
> _______________________________________________
> LargeFormat mailing list
> LargeFormat@f32.net
> http://www.pairlist.net/mailman/listinfo/largeformat
>