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2. Crop factor - Wikipedia

   en.wikipedia.org/wiki/Crop_factor

   For example, a 28 mm lens delivers a moderately wide-angle FOV on a 35 mm format full-frame camera, but on a camera with a 1.6 crop factor, an image made with the same lens will have the same field of view that a full-frame camera would make with a ~45 mm lens (28 × 1.6 = 44.8). This narrowing of the FOV is a disadvantage to photographers when ...

3. Lenses for SLR and DSLR cameras - Wikipedia

   en.wikipedia.org/wiki/Lenses_for_SLR_and_DSLR...

   All Nikon full-frame "FX" DSLRs have a DX-compatible mode that, by default when a DX-format lens is attached, crops the captured frames to the DX format and adjusts the viewfinder to reflect the smaller capture area. This can be overridden by the user if desired. There are basically three types of F mount Nikon lens: MF = Manual focus lenses

4. List of Nikon F-mount lenses with integrated autofocus motor

   en.wikipedia.org/wiki/List_of_Nikon_F-mount...

   Use of this lens on a full-frame (FX) sensor will likely cause vignetting. All full-frame Nikon DSLRs are able to detect DX lenses and crop the image accordingly by default. However, the viewfinder view is likely to be constricted. Sigma DG/Tamron Di/Tokina FX: A lens for fullframe DSLRs (FX) or analog film. No special designation for Nikon NIKKOR.

5. 35 mm equivalent focal length - Wikipedia

   en.wikipedia.org/wiki/35_mm_equivalent_focal_length

   35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...

6. Full-frame DSLR - Wikipedia

   en.wikipedia.org/wiki/Full-frame_DSLR

   If the lens mounts are compatible, many lenses, including manual-focus models, designed for 35 mm cameras can be mounted on DSLR cameras. When a lens designed for a full-frame camera, whether film or digital, is mounted on a DSLR with a smaller sensor size, only the center of the lenses image circle is captured.

7. List of superzoom lenses - Wikipedia

   en.wikipedia.org/wiki/List_of_superzoom_lenses

   Canon 24-240mm F4-6.3, a superzoom lens. This is a list of superzoom lenses, sometimes referred to as all-in-one lenses, that are designed for mirrorless cameras.. There is no precise definition of superzoom, but lenses marketed as such usually have an optical zoom ratio greater than 7×. [1]