| 摘要 |
PURPOSE:To recognize how a final image is reproduced through a finder system by fitting a filter with a lower cutoff frequency of a finder optical system than to a photographic optical system. CONSTITUTION:This special-filter attached camera is constituted by fitting filters which have different characteristics to the photographic optical system and finder optical system, and those filters use phase shift type filters for soft focusing. In this case, the cutoff frequency of the filter fitted to the finder optical system is lower than that of the photographic optical system. Namely, 0.02AL<AF<0.2AL, where AL is the dot diameter of the filter fitted to the photographic optical system and AF is the dot diameter of the filter fitted to the finder optical system.
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