[rollei_list] Re: Tell the tales of Triotars
- From: Marc James Small <marcsmall@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sun, 05 May 2013 03:59:01 -0400
At 03:26 AM 5/5/2013, Sanders McNew wrote:
>Apart from the obvious difference in aperture, can anyone speak to the
>differences (if any) between the f/3.8 and f/4.5 Triotars? Does
>anyone think they can see any discernible differences in how they
>render images? The difference in speed seems slight -- why did F+H
>offer both lenses? Is there any advantage to one over the other?
Sanders, the Triotar is a three-element lens. The difference in
maximum aperture really doesn't mean a lot as the lens was only
capable of producing a rather hazy image at open apertures: it works
best at around f/8 or f/11. I cannot recall that I have retained any
Triotars in my collection other than a 4.5/13/5cm Triotar in a
converted, and rather crude, Leica thread- mount.
Franke and Heidecke were the new kids on the block in the 1930's. I
suspect that they had to take what Carl Zeiss Jens had to offer, and
so they bought some in f/3.8 and some in f/4.5. Both started life as
large format lenses, I suspect. Richard and Carlos will know more, I suspect.
Marc
It is a good world for doing good deeds.
-- Nathaniel the Faun
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