Hello,
I am interested if anyone that has used both the Tele-Xenar 600 and 550 XXL could comment / compare them. I am interested in 8x10 and want a high resolution lens. The film will be drummed scan and I would like all of the film area to be in sharp focus with high resolution (mainly landscapes). When I scan an image (at 4000dpi) I look to see all parts are in sharp focus and details are well resolved. For example using a 4x5 and T-X 400, a street sign 75 meters distant serves as a test target. Lettering is very crisp and huge. The bolts holding the sign in place are almost resolved to the point of knowing the bolt type.
The MTF of the TX-600 is very impressive although I do not have a chart for the 550-XXL. Granted the XXL is intended for ULF but will it outperform the TX when some movements are made (since it has a 900mm image circle). The guys at Schneider - Germany said to go with the TX-600 as it has better resolution. This is nice of them not to push the most expensive. One confusion is the glass type. Does anyone know the type of glass used in either lens? I am told it's Schott but is there any ED type glass, say FPL-51?
For field use I am a bit worried about the 122mm filter sizes of the XXL. This really pushes the filter prices high. For the T-X, the 105mm is easier to deal with.
Thanks,
Tim
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