Is that f3 equivalent to a modern f3?
Does it fit on a Sinar board easily?
Tin Can
it is a modern f3, similar to dallmeyer b series.
the lens is too large for sinar 14 cm board.
I plan to use sinar 57 back stand as front stand and mount it on a home made sinar 57 lens board.
Last edited by Jason Greenberg Motamedi; 13-Aug-2018 at 11:34. Reason: Thanks Louis!
thanks, really helpful
The introduction of Waterhouse stops and then, later, iris diaphragms, implicitly lead to small decreases in maximum speed of the same optical design. An early pre 1857 barrel will be slightly faster than one with "internal brasswork!" to support Waterhouse stops. Iris diaphragms mechanisms reduce the optical diameter even more.
So the early Dallmeyer B portrait lens design (WHS) should be a little nearer F.3 than the "turn the barrel" versions with iris aperture. Unless the reported variations in focal length of this model (11-12") are real and are an attempt to keep the low F!
The same may be the case with the 3 generations of Hugo Meyer Petzvals. No stops - whs stops - iris aperture, with decreasing maximum speed.
Neither my Dallmeyer 2b or 3B has any intrusion into the barrel around the Waterhouse slot, and since the Dallmeyer Portrait Lenses came out in 1867, I doubt you'd find one with a pre-1857 barrel. But yes, I have some Petzvals with the aperture restricted by a baffle around the slot, or an iris mechanism. I'm not sure about the Mayer Schnellarbeiter.
"I love my Verito lens, but I always have to sharpen everything in Photoshop..."
I would love to see some sample shots.
Does anyone have a catalogue excerpt with coverage? I wonder how much the 400mm can cover...
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