 BetterPhoto Member |
wide angle SLR lenses I have used various 35mm cameras over the years for a lot of work, especially in the architectural field. I have a lot of older Minlota equipment to go along with their older film 7000 system, including a number of lenses which are wide angles and various zooms. I have seen they are finally coming out with newer models like the 5D that accept the older lenses which is great, but am concerned about hearing that there is a difference in width of field between the film and digital cameras. Is it that the newer lenses are narrower, or is it the system itself changes what was once wider to a narrower field of vision? Am I better off not trying to apply the older to the newer technology and just biting the bullet? I have an older 18-35mm sigma AF lens. Will the same field width be attainable with the older lens on the new camera? Is this field of vision issue common with all new digital cameras and all existing interchangeable lenses or does it vary from manufacturer? Would you reccommend I invest in if I am to start over with a new system? Thanks, Michael
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Jon Close |
The lenses don't change. The narrow angle of view is because the digital SLRs are essentially a smaller format, with a sensor sized about 24mm x 16mm (or slightly smaller), compared the 35mm film frame size of 36mm x 24mm. So lenses mounted on the 5D will have a narrower view equivalent to lenses of 1.5x longer focal length mounted on the 7000. Commonly called a "1.5x crop factor." Great for telephoto because now the 70-300 you may have had for the film camera gives the equivalent view of a 105-450mm on the DSLR. Bummer if you like wide angle, because the 18-35 on the 5D will only give the view that you'd get with 27-53mm on the film camera. Makes the 18-35 a decent "normal" zoom on the 5D, but to get the wide angle you're used to getting from the 18-35 on the film camera, you'll need to get a 12-22mm zoom.
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