Premium Member Tim Carroll Posted March 8, 2009 Premium Member Share Posted March 8, 2009 I shot a number of test with a set of Cooke Kinetal lenses, and I am trying to interpret the results. Any and all help would be appreciated. The first test was just with the 12.5mm, the 17.5mm and the 25mm. Unfortunately the frame grabs don't make it show up as well as it did in the telecine suite, but the 12.5 and the 17.5 look more washed out compared to the 25, particularly in the center of the frame, around her face. The 17.5 looked worse than the 12.5 and is even washed out from the 12.5 if you look at the yellow bike frame. The second test was with the 9mm, 12.5mm, 17.5mm, and the 25mm. The issue is not as glaring in these shots, but the 12.5 and particularly the 17.5 are again lighter and a bit more washed out. I then set up a test with a combination of daylight, tungsten and overhead fluorescent light and shot with all five lenses in the set (9mm, 12.5mm, 17.5mm, 25mm, and 37.5mm). It is more noticeable with these frame grabs but still doesn't stand out as much as it did in the telecine suite, but again the 12.5 and the 17.5 look really burned out in the center part of the frame, with the 17.5 looking the worst. The lighting stayed the same from shot to shot and the aperture was set the same on each lens in all three tests. It was set at f4 in the first test and f2.8 in the second and third test. Is that lens flare, or some kind of iris issue, or do you just need to find a way to light around that characteristic of a lens? Any and all input is appreciated. Best, -Tim Quote Link to comment Share on other sites More sharing options...
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