I'm not sure if I'm in the right place - I'm teetering around in that grey area between medium and large format... I ordered some plate holders on eeeBeeeGeeeBay. Fidelity, looked very nice and clean, the seller despatched them promptly and I got them for a nice low price. Now the bad news. He had described them as 'Quarter Plate'. Nope... I could see straight away they were smaller than that. Oh hum, either kick up a fuss... or use them for something else? I measured them up, thinking they must be 2.5 by 3.5 inch. (6.5 X 9 cm). Nope.. smaller than that 6 X 9, then? 2.25 X 3.25 inch? NOPE - not quite On a lot of American sites I have seen baby speed graphic described as 2 X 3. I assumed, maybe wrongly, that these were really 2.25 X 3.25 inch, but this had been abbreviated to 2 X 3 for brevity. Can anyone clarify this, please? The holders actually seem to be 55 by 90 or so millimetres, which is about 2.1 by 3,5 inches. I can not slip a strip of 120 roll film into the holder, it is too narrow... I had assumed that 120 roll film would be the same width as 2.25 cut film. Again, maybe wrongly. Is there in fact a 2 X 3 inch size? Or is 2 1/1/4 inch in roll-film speak different to 2 1/4" in sheet film speak? Thanks.