However, smaller sensors do see a smaller cropped view from it than a larger sensor would see. That 50mm f/1.8 full-frame lens becomes a 75mm lens on APS-C. On a full frame FX-format camera with a DX lens mounted, the camera will automatically engage its built-in DX crop mode, thus recording an image only from the center section of the sensor. If the lens is 150-600 mm, it is ALWAYS 150-600 mm. Full-frame has a crop factor of 1x, while a crop-sensor camera has a narrower angle of view, meaning a higher crop factor. With the new DSLR technology, manufacturers made large 35mm sensors so that people could continue using their lenses on new cameras and make the transition. The Equivalent Focal Length ONLY applies to the full frame camera. It does NOT apply to your cropped sensor body. If you don't have experience with full frame cameras, then this Equivalent Focal Length has no meaning to you. The purpose of this Equivalent Focal Length merely tells them what field of view to expect from the new digital camera with the smaller sensor, in full frame terms that they understand. Users with years of experience with full frame 35 mm film cameras know the field of view expected from various focal lengths. In general, a full-frame lens can be used on a crop sensor camera as long as it is compatible and able to be mounted to the intended camera. Equivalent focal length is a comparison which corresponds to the lens, due to sensor size, but it only applies to the full frame sensor body. One other crop-sensor lens that works fantastically. It will act as a wide-angle for full-frame cameras or as 45mm equivalent normal lens on APS-C bodies. The only non-kit Nikon DX lens that really sold well was the. but some analysis Ive done shows they were kind of justified in not doing much more. A smaller sensor simply crops a smaller view.Ĭrop factor is about the sensor size, and it is about the field of view, but crop factor is NOT about the lens. The Tokina 11-16mm isnt the only DX crop sensor lens that can be used effectively on full-frame, either. Some interesting upgrades though the 4K crops are a little. The lens does what it always does, and the sensor size sees what it always sees. The "Equivalent Focal Length" only apples to the full size sensor. the only issue is that a cropped sensor size sees a smaller field of view. The field of view is also determined by the sensor size. That actual meaning of this 1.6 crop factor is only that your 55-250 mm lens on the cropped sensor body has the same field of view as a camera with full sensor would see with a 88-400 mm lens (because its sensor is larger, seeing a wider view, so needing a 1.6x longer lens to reduce the full frame field of view back to what the smaller sensor would see). It has been said that "your 55-250 mm has the same field of view as a 88-400", but that is very incomplete which causes us confusion if said that way. What does change is that the body with a smaller sensor sees a smaller field of view, because the smaller sensor crops the view to be smaller. The sensor size cannot affect what the lens actually does, but a smaller sensor can only see a smaller crop of it. If it is a 150-600 mm lens, it is always a 150-600 mm lens on any camera body. Crop factor does NOT affect the lens in any way.
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