RE: Just to be sure I understand...

[George L Smyth <glsmyth@xxxxxxxxxxxxxxxxx>]

On Fri, 10 Sep 1999, Barry B. Bean wrote:

> On Thu, 9 Sep 1999 21:00:02 -0400, George L Smyth wrote:
> 
> >I don't think you'll find much difference between a #25 and #29 filter.  When I tested, I
> >found a very small difference, but certainly not enough to compensate for the speed
> >difference
> 
> Hmm - according to Tiffen, the 25 is worth 3 stops, but the 29 is
> worth 4 1/3 stops.

Each filter manufacturer will be a bit different - my #25 is about 2.5
stops (I forget about the #29 - I no longer have it - but it was 1 to 1.5 
stops more than my #25, if I remember correctly). We should all do our own
testing, but the difference I saw between the #25 and #29 was very small.

george

---
Handmade Photographic Images
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