Birns & Sawyer [TEWE] Omnitar 200mm f3.2 on Full Frame

Not trying to start a flame war, but I do think that there is difference between full frame and crop sensor to the look of images taken with the same lens. Somehow, the images have more "wholeness" to it on full frame. Not saying one is better than the other, but different, as it should be, if a lens was designed for full frame, and is used on crop-sensor. Some of the characteristics of the lens is cropped out, but is whole on full frame. The depth of fields is also different on the same aperture; the size of the sensors modifies the depth of field.

The Birns & Sawyer (Tewe) Omnitar 200mm f3.2 was designed for 16mm, but image circle almost covers 35mm full frame format. It's heavily vignetted, but I like the effect on some of the pictures, especially when used on larger apertures. Strangely, sometimes, the exposure needs to be increased by more than a stop or the images would underexpose, even with live-view. As it turns out, this lens is usable on full frame and I rather enjoy the way the pictures turn out. This lens is very sharp even at maximum aperture, and like most good cinematic lenses, it handles highlights very gracefully without harsh clipping. Images look very pleasing to the eyes. It's almost velvety but not unsharp.

Too bad there isn't too much information on the Birns & Sawyer Omnitar 200mm f3.2 and its brother Omnitar 150mm f3. These lenses were made by Tewe of Germany. If you know these lenses, please share.

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