Chris Henshaw wrote: > One last question - has there been further progress in analysing the > capabilities of the Asart 35mm tilt and shift lens: is it really tilt and > shift, is it available for the EOS, what is the weight and what is the image > quality? The german mag "dia Magazin" reviewed PCS Asart 1:2,8/ 35mm T/S lens (same as Kiev Shift 2,8/35) a while ago. Unfortunately I don´t have a scanner, so I faxed the article to my mail account. The result can be seen at: http://custom1.kapsch.net/shift1.gif and http://custom1.kapsch.net/shift2.gif The mag changed it´s name this year to "fotoforum" http://www.fotoforum.de. There is not much on their web site but you can order a free issue ("Probeheft") from there! The article is written in german so here is a translation of the important parts: They compared the PCS Arsat 2,8/35mm to the PC-Super-Angulon 2,8/28mm from Schneider-Kreuznach. There is some difference in quality but you have to pay for it: DM 4000 compared to DM 800 is a big step... The PC-Super-Angulon lights a circle of 62 mm which means you can shift 11 mm in all directions (up, down, left, right) without vignetting! The Arsat lights a circle of 59 mm which results in a maximum shift of 11 mm (landscape format) but only 9 mm in portrait format (8 mm according to the manual). You can turn the lens 360 degrees which lets you shift in all possible directions. In their test the Arsat shows a good performance starting at f/4. Note that only the new version of the lens is able to shift and tilt! The old version is shift only. Interesting is the graph on page 2: http://custom1.kapsch.net/shift2.gif The curves A/a show the maximum shift without vignetting. If you select an f-stop then curve A tells you the maximum vertical shift in mm in portrait format. Curve a shows the maximum vertical shift in landscape format, which is always more. Example: With f/11 you can (vertical) shift to 7.3mm maximum in portrait format without vignetting. If you take the same picture in landscape format you can shift up to 9.5mm before a darkening in the corners starts to occur. The curves B/b have the same meaning as A/a but with a light loss in the corners of 1 f-stop. So between A/a and B/b there is less light loss and to the left side of B/b the darkening in the corners increases. The article states that more expensive T/S lenses like the PC-Super-Angulon have their A/a graphs to the left side of the B/b graphs of the Arsat... What´s interesting now would be a compareable graph of the Canon T/S lenses! Conclusion: you should calculate the price for each mm shift you gain and then ask yourself if it´s worth it... :-) Greetings from Vienna, - Peter - * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
