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Appendix E
E-1
Appendix E - Focal Length
Conversion
The imager in your camera has a smaller image area than 35mm film or Advanced Photo
System film. Because of this difference in size, images obtained from a DCS 300 Series
camera using lenses designed for Nikon film cameras will also differ in size.
The table on this page and the figures on the next page will help you make your lens
selections for your Kodak DCS 300 Series camera. The table shows the relationship
between Nikkor 35mm lenses and the DCS 315 and DCS 330 cameras, and the IX-Nikkor
lenses and the DCS 315 camera. For example, if you captured an image using a 50mm
lens on your 35mm film camera, you would need a 19mm Nikkor lens on a DCS 315 or a
26mm Nikkor lens on a DCS 330 to obtain the same image.
When compared to a 35mm film camera, a DCS 330 image will appear to have been
captured with a 35mm Nikkor lens having a focal length about 1.9 times longer than was
actually used. For the DCS 315, this apparent 35mm Nikkor lens focal length change will
be about 2.6 times. When compared to a Pronea 6i film camera capturing images in
Classic mode, a DCS 315 image captured with an IX-Nikkor lens will appear to have been
captured with an IX-Nikkor lens whose focal length was about 1.7 times longer.