![]() ![]() Whoever specified the Equivalent may not have that right either, but I see that the Apple iPhone 14 with multiple cameras has now labeled focal lengths with the Equivalent number - the angle of view in degrees would be equivalent, but the focal length number instead applies to 35 mm film size sensors. ![]() * Meaning, if you do specify Equivalent Focal Length here, then to have any meaning, you must also specify the corresponding 36x24 mm 1x full frame sensor size in Option 1 to compute that Equivalent Field of View. This number is familiar to the oldtimers with much 35 mm film experience (and DSLR 1x crop factor sensors). Instead Equivalent Focal Length convention refers to a comparison to different camera with either 35 mm film or a Full Frame 1x sensor, for the focal length *IT* would use to see the same size field of view as your lens sees on your camera. The term Equivalent Focal Length is NOT the focal length of the lens you are using. The Field of View calculation necessarily uses the real focal length of your actual lens. Using Equivalent Focal Length instead of the actual real focal length will produce a huge error.
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