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2. Live preview - Wikipedia

   en.wikipedia.org/wiki/Live_preview

   Live preview on LCD. The concept for cameras with live preview largely derives from electronic TV cameras.Until 1995 most digital cameras did not have live preview, and it was more than ten years after this that the higher end digital single-lens reflex cameras (DSLR) adopted this feature, as it is fundamentally incompatible with the swinging-mirror single-lens reflex mechanism.

3. Video astronomy - Wikipedia

   en.wikipedia.org/wiki/Video_astronomy

   The equipment used varies from webcams and basic security cameras to specialized video astronomy cameras. Recent growing interest in the video 'near-live' aspect of astronomy has brought about websites devoted purely to the practice [6] and forums for users of the equipment [7] [8] [9]

4. List of lightest mirrorless cameras - Wikipedia

   en.wikipedia.org/wiki/List_of_lightest...

   More specifically, rangefinder cameras lack autofocus and employ a very different manual focusing method involving a rangefinder mechanism with an optical viewfinder. Furthermore, most digital rangefinder cameras (except Leica's recent models) lack live preview, which is sometimes considered a defining feature of mirrorless cameras.

5. Canon EOS 20D - Wikipedia

   en.wikipedia.org/wiki/Canon_EOS_20D

   The main differences between the 20Da and 20D are the replacement of the "hot mirror" infra-red (IR) filter which covers the CMOS sensor on the 20D and live view mode. [ 3 ] In conventional photography, the IR filter is used to make the spectral response of the CMOS sensor more like that of the human eye.

6. Mirrorless vs. DSLR Cameras—The Best Cameras of 2023 - AOL

   www.aol.com/lifestyle/mirrorless-vs-dslr-cameras...

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7. Comparison of digital SLRs - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_digital_SLRs

   Live view Movie mode Memory card Dimensions (mm) Weight (g) [1] Announced (date) Ref. Canon: 5D Mark IV: Full frame: 30.1 EF 100 252 61 50 102400 7 3.2 yes yes CF+SD: 150.7×116.4×75.9 890 Aug 2016: Canon: 1D X Mark II: Full frame: 20.2 EF: 100 216 61 50 409600 14 3.2 yes yes CF+CFast: 158x168x83 1530 Feb 2016: Canon: 1D X: Full frame: 18.1 EF ...