From: Arnold Stark

>J. C. O'Connell schrieb:

>>You guys dont understand. A 35mm F1.4 lens designed for a smaller sensor
will be as cheap to >>produce as a 50mm F1.4 for 35mm or even cheaper.

>That I do not believe as the distance of the lens to the focal plane
>will not be changed so that a 35mm f1.4 must be a retrofocus construction

There's no reason for the new digital cameras to keep the current focal
plane to rear element distance. If the focal plane distance was made smaller
(this would be a good benefit as the image would be brighter on the sensor)
then a digital camera could be designed with two lens mounts. An external
large one would take current 35mm formant lenses and a smaller one closer to
the film plane could take the smaller digital lenses.

An alternate would be to lower the focal plane distance for the digital
lenses and sell an extension tube type adapter to keep the proper focal
plane distance for 35mm lenses.

Tom Reese

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