I picked up a Ross 105mm f3.8 Xpres in a Trikon shutter about 3 weeks ago at a camera fair for £3 ($4.80) with a flange. Actually it's un-named but the shutter is made by Ross and it's coated and is identical to the Xpres on my Ross Ensign Selfix 820
Yesterday I put it on a spare lens board to check the coverage and was very surprised to find that it covers 5x4 and allows some movements. This version of the Xpres is front cell focussing, I tried it set to infinity. Some claim that the Xpres is a Tessar design, however the original Xpres is a derivative with 5 element. There's 5 reflective surfaces so it's not a Tessar type.
The Trikon shutter has flash synch and as the name suggests 3 shutter speeds 100, 50 and 25 plus B & T, it's Compur #0 compatible. Next I need to see how sharp the lens is with 5x4, the one on my Selfix is excellent.
Ian
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