Yes John, I called it the Scheimpflug angle in my post, they are really the
angles of the Scheimpflug principle, the Scheimpflug intersection is where
the angles of the subject plane, the lens plane and the image plane have an
intersection.
I watch the DOF effect whilst tilting the lens in the focusing screen
directly, however you could lose some details sometimes because the screen
loses luminosity for some areas according you tilt the lens, the
Scheimpflug indicator cards can help for a better planning, I don't have
the original transparent, it would be nice to have the 80mm lens indicator
at least, I'll write you off list tomorrow, thank you very much John.
Carlos
2017-03-26 20:11 GMT-03:00 John Wild <jwild@xxxxxxxxxxxxxxxxxxxxxx>:
Carlos, that's a nice collection.
I'm sure you know that with the Scheimpflug principle, when tilting the
lens with respect to the film plane, the plane of focus is no longer
parallel to the film but, with respect to the SL66, it leans forward like
a piece of cardboard.
With the focus hood, being taller than the rest of the items it goes above
the plane of focus, a bit like the items being tilted and
submerged underwater but the top of the camera is above the surface and so
it is no longer in focus.
Do you have the Scheimpflug calculation cards for the SL66? I think I
have a spare if you would like one.
John
------------------------------
*From:* rollei_list-bounce@xxxxxxxxxxxxx <rollei_list-bounce@xxxxxxxxxxxxx>
on behalf of CarlosMFreaza <cmfreaza@xxxxxxxxx>
*Sent:* 26 March 2017 12:35
*To:* rollei_list@xxxxxxxxxxxxx
*Subject:* [rollei_list] Rollei SL66 Distagon 4/80
I took yesterday a photograph about the equipment my father often used
when he had photography as a hobby;it's from the '50s and I'm still using
it. The Rolleiflex 2,8C Xenotar and the Gossen Sixtomat and the Walter Voss
Diax IIb are in perfect working order.
The image was taken with the Rolleiflex SL66 CZ Distagon 4/80, Kodak Tmax
100 developed with Romek PQ7 1:3. I used the camera capability to tilt the
lens, the 2,8C viewfinder hood is out of focus slightly and its Xenotar
lens is in focus, it happens due to the Scheimpflug angle, I need a bit
more of practice:
https://www.flickr.com/photos/itarfoto/33523432691/in/dateposted-public/
From the '50s...
<https://www.flickr.com/photos/itarfoto/33523432691/in/dateposted-public/>
Gossen Sixtomat light meter (selenium cells); Rolleiflex 2,8C Xenotar
2,8/80; Walter Voss Diax IIb rangefinder 35mm camera. Rolleiflex SL66; CZ
Distagon 4/80, Kodak Tmax 100, Romek PQ7 1+3
<https://www.flickr.com/photos/itarfoto/33523432691/>
Carlos
