Hyperfocal differences Realist vs. Revere 33

[P3D <scooter@xxxxxxxxxx>]

I've been using a Revere 33 for many years.  I use the hyperfocal 
guide when I focus.  Recently I got a Stereo Realist from Dr. T 
(thanks again, George!).  I was examining the hyperfocal table on the 
inside of the lens cap and the focusing ring of the Realist and it 
didn't seem to correspond with my memory of Revere 33 allowances for 
depth of field.

I pulled the Revere out and examined it and compared it to the Realist 
camera.  The Revere 33 has much more generous tolerances for allowable 
range of 'sharp' focus at a given f stop.

Both of these cameras have 35 mm lenses.  Is it possible that the 
design of the Revere lens allows for greater depth of field at a given 
f-stop, or is it merely that the David White Company was more 
conservative in their computations and recomendations?

I have one of the earlier Realist cameras (with I believe run of the 
mill David White Co. 3.5 lenses).  Ser No. on the Realist is A37721 if 
that helps at all.

What gives?



Steve Owsley
San Francisco.


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