qiutao_lee Posted April 4, 2008 Share Posted April 4, 2008 Would you please let me know the E Krauss Protar 205mm f/8 can cover 4x10 or not.thank you!Li Link to comment Share on other sites More sharing options...
colin carron Posted April 5, 2008 Share Posted April 5, 2008 Tricky to say without testing the lens as the Protar came in several versions ranging from a Tessar-like 60 degree angle up to semi-wide angle Angulon type 85 degree angle. I can't find any information on this specific Krauss Protar which would have been made in France under license from Zeiss. If it was the 60 degree variety then it will just start to vignette at the edges while the wider version would cover well. If you have the lens or can ask the current owner a question you could see what the image circle measures. Link to comment Share on other sites More sharing options...
frankz Posted April 5, 2008 Share Posted April 5, 2008 Take a tape measurer in one hand and the lens in the other. Hold the lens to allow a projection of an image onto a wall and measure with the tape measurer. While not exactly a scientific way of going about things, you'll have a fairly close idea as to the lens' coverage. Link to comment Share on other sites More sharing options...
ole_tjugen Posted April 7, 2008 Share Posted April 7, 2008 An f/8 Protar is likely to be the Serie IIa, which was rated to cover 75 degrees. That means that it should just cover 8x10", so no problem with 4x10". Link to comment Share on other sites More sharing options...
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