例句與造句

1. On large format view cameras and rangefinder cameras, short-focus lenses are widely used because they give less distortion than the retrofocus design and there is no need for a long back focal distance.
2. Although C-mount lenses have a back focal distance far too short to be used with 35 mm film SLRs or any existing digital SLR, they can be mounted on interchangeable-lens mirrorless digital cameras.
3. The optical components of these adaptors may reduce or increase the focal length of the combination, or they may affect only the back focal distance of the combination, leaving the effective focal length for purposes of photographic composition unchanged.
4. The inverted telephoto design was first employed in the 1930s by Taylor-Hobson for the early Technicolor " 3-strip " cameras since the beam splitter unit behind the lens required significant space, so that a long back focal distance was essential.
5. The telephoto lens configuration combines positive and negative lens groups with the positive at the front, so as to reduce the back focal distance of the lens ( the distance between the back of the lens and the image plane ) to a figure shorter than the focal length.
6. It's difficult to find back focal distance in a sentence. 用back focal distance造句挺難的
7. The inverted telephoto configuration does the reverse, employing one or more negative lens groups at the front to increase the back focal distance of the lens & ndash; possibly to a figure greater than the focal length & ndash; in order to allow for additional optical or mechanical parts to fit behind the lens.