adygadam Posted January 14, 2012 Share Posted January 14, 2012 Hi I have bought a Panasonic GH2, and I have read about the "awesomeness" of the M42 vintage lens. I understand that the Panasonic standard lens kit of 14-42mm is an equivalent to a 28-84mm lens (35mm format), also I am aware that M43 sensor would apply a 2.0 crop factor to a 35mm film lens. So, my main issue is, I can't figure out the crop factor for Helios 44M f2.0 58mm lens (£20 on eBay), links to info: [url=http://t.hacquard.free.fr/site1/helios_44_en.html]http://t.hacquard.free.fr/site1/helios_44_en.html[/url] If this is a native 35mm film format lens, am I right applying a crop factor of 2.0 which means that this lens mounted on my camera would yield an effective focal length of 116mm in 35mm film format terms ? If the above is true, that means I can't get a fast M42 lens for a cheap price which would achieve an effective ~50mm (35 mm film) on my camera for video shooting purposes, example of lens would be: Mir 1 f2.8 37mm (£44 on eBay), wider lens are way too expensive for this experimental test ! Many thanks for your advice. Damian Quote Link to comment Share on other sites More sharing options...
Caleb Genheimer Posted January 14, 2012 Share Posted January 14, 2012 I would assume that these lenses are in mm according to a 35mm camera. I have purchased a MIR 37mm, and when it arrives, I will certainly let you know. Quote Link to comment Share on other sites More sharing options...
adygadam Posted January 15, 2012 Author Share Posted January 15, 2012 Thanks B3Guy, do you have a Pany ? if yes can you post a test pic with this lens ? or a mini review ? Quote Link to comment Share on other sites More sharing options...
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