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by damned truths

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It varies. Even when using the same camera, the lense can affect this feature, so if it's important to you, you're going to need to do your research. On my camera for example, three of my lenses can do DOF preview, but one of them can't for some unknown reason. This is not a standard feature and may be available or unavailable depending on the camera body, ...


2

If you have browsed through the technical pages of Pierre Toscani, you probably noticed he is quite knowledgeable when it comes to geometrical optics. Although I cannot ascertain his schematics are correct, I certainly trust him on this, as this is an extremely well researched article. Concerning the maximum possible lens aperture, Toscani says that since ...



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