... focal length for a 4x5-inch nega-. photo lens, since the normal lens on the 2'4x2'4-inch negative size « finches. 'The normal or 'standard focal length for any negative size ^ roughly equal to the length of the diagonal of the negative ...

... focal length and how it affects picture taking. Be sure to digest each statement and understand it before proceeding to the next, THE FOCAL LENGTH of I lens determine the scale of the image on fhe negative; the longer the focal length ...

... focal length lenses. Zoom lenses offer you the flexibility of many different focal lengths along with the convenience of having to carry only one lens. Zoom lenses not only replace several fixed-focal length lenses, but also offer all ...

... focal length,' which termines (a) the area of the the scene which will appear on on your screen when projected the shorter the focal length, the greater the area covered; (b) the size of the subject the longer the focal length of of the ...

'Focal Length' Common Term In Photography. By ED FIT/GEHALn L'PF Staff Photographer. One of the most commonly used forms in photography Is "focal length". Not many amateur photographers know exactly what the lerm means or the importance ...

... focal length is that it controls how much the image of the subject is magnified. Take as a starting point, the standard lens of a 35mm camera. This lens has a focal length of 50mm. Lenses with longer focal length such as 100mm or 300mm ...

... focal length, equivalent focus, and back focus will find this extract from the "British Journal of Photography" of interest to" themselves:— The focal length a lens is the distance from its optical centre to the plate or ground glass ...

... focal length of a lens dc- ermines the scale of the image on HIP negative; the longer the ocal length, the larger the image. focal Icnslh ami image size arc directly proportional: a lens with wice Ihe focal length of another ens ...

... focal length, a pleasing optical relation may result. Gleam Is Important. "The sparkle and gleam of the eyes, and probably their focal length, have a lot to do with love." Well, there it is. I have heard about this gleam-in-the-cye ...

... focal length and how it affects picture taking. Be sure to digest each statement and understand it before proceeding to the next. The focal length of a lena determine! the scale of the image on the negative; the longer the focal length ...