Total eclipse of the moon - Printable Version

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Total eclipse of the moon - bcheary - Mar 28, 2015

Shot these photos with a Canon SX50HS at 2X digital telephoto (2400mm equivalent)
Jacksonville, Florida.

http://vimeo.com/108427291?

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RE: Total eclipse of the moon - kNox - Mar 31, 2015

Really cool! Forgive my possibly ignorant question, but wouldn't a 2400mm yield a 10x shot?

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RE: Total eclipse of the moon - bcheary - Mar 31, 2015

(Mar 31, 2015, 02:15)kNox Wrote:  Really cool! Forgive my possibly ignorant question, but wouldn't a 2400mm yield a 10x shot?

Thanks for viewing and commenting. At 1200mm the SX50 is at 50X with the digital telephoto it bumps it up to 2400mmthus 100X.

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RE: Total eclipse of the moon - MrB - Mar 31, 2015


The 100x zoom is the magnification at full telephoto focal length compared with the image at the lens's shortest (i.e. wide-angle) focal length.

Those zoom figures might be a bit misleading. Quoted equivalent focal lengths (e.g. 24-1200 mm for the SX50's optical zoom) are those of a 35mm film camera, AKA a full-frame camera. Their lenses that give a similar view to human vision, called standard lenses, have a 50mm focal length. So a 2400mm lens would give a field of view in which objects appear to be 2400/50 = 48 times bigger (or nearer) than our eyes usually see them, i.e. zoomed in 48x.

Cheers.
Philip

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