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2. List of longest smartphone telephoto lenses - Wikipedia

   en.wikipedia.org/wiki/List_of_longest_smartphone...

   This is a list of smartphones with a telephoto lens that offers a focal length (35mm equivalent) of at least 100mm or "4× optical zoom" with an imaging area equivalent to a 1/3.5″ or larger sensor. Smartphone lenses are often marketed in terms of "optical zoom" [1] relative to the phone's main camera. For example, 120mm is usually referred ...

3. List of superzoom compact cameras - Wikipedia

   en.wikipedia.org/wiki/List_of_superzoom_compact...

   This is a list of superzoom compact cameras, also known as travel zoom cameras. [ 1 ] [ 2 ] These are small fixed-lens " point-and-shoot " digital cameras that have a high optical zoom ratio. These cameras all include a power zoom lens that retracts into the body when not in use, along with an automatic lens cover or lens cap.

4. Canon PowerShot SX60 HS - Wikipedia

   en.wikipedia.org/wiki/Canon_PowerShot_SX60_HS

   The Canon PowerShot SX60 HS is a digital ultra-zoom bridge camera announced by Canon Inc. on September 15, 2014. It has one of the longest zoom ranges of any digital camera. It features a 65x optical zoom that covers the 35mm equivalent of 21-1365mm. It is the first Canon camera in this class that has an external microphone jack.

5. Zoom lens - Wikipedia

   en.wikipedia.org/wiki/Zoom_lens

   A zoom lens is a system of camera lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens . A true zoom lens or optical zoom lens is a type of parfocal lens, one that maintains focus when its focal length changes. [1]

6. List of superzoom lenses - Wikipedia

   en.wikipedia.org/wiki/List_of_superzoom_lenses

   This is a list of lenses designed for APS-C mirrorless cameras that have an optical zoom ratio greater than 7×. For comparison, the longest superzoom lens designed for DSLRs was the Tamron 18-400mm F3.5-6.3 for EF and F mounts, which had a 22× optical zoom ratio.

7. Telephoto lens - Wikipedia

   en.wikipedia.org/wiki/Telephoto_lens

   The lens is completely stored inside the camera in switched-off state and has a maximum focal length (shown) of 384 mm (calculated equivalent to 35 mm film), minimum is 24 mm, a zoom factor of 16×. The concept of the telephoto lens, in reflecting form, was first described by Johannes Kepler in his Dioptrice of 1611, [ 7 ] and re-invented by ...