misha Posted May 3, 2007 Share #1 Posted May 3, 2007 Advertisement (gone after registration) i recently bought a pre-asph 50mm lux and getting the same magenta results as we all have at 15-35mm range. is that normal? i thought magenta was only an issue for wides? thanks m Link to post Share on other sites More sharing options...
Advertisement Posted May 3, 2007 Posted May 3, 2007 Hi misha, Take a look here magenta @ 50mm. I'm sure you'll find what you were looking for!
adan Posted May 3, 2007 Share #2 Posted May 3, 2007 Magenta IR contamination will happen on the M8 with any unfiltered lens. Focal length is not a factor. The issue with wide-angles (<35mm) is that the corners turn green or cyan WITH IR-blocking filters (while the magenta is mostly eliminated), and therefore wides need coding to declare the focal length, and the corrective firmware (v. 1.1+) , in which case the camera can correct for the "cyan drift" after exposure. The deal with your 50 is that, IF you get an IR filter for it, it will not show the green-corner effect, and thus will not require the 6-bit coding spots and any firmware corrections (unless you just want the focal length recorded in the metadata). Link to post Share on other sites More sharing options...
misha Posted May 3, 2007 Author Share #3 Posted May 3, 2007 got it (i think) . thanks a lot for a quick and elaborate explanation. misha Link to post Share on other sites More sharing options...
sean_reid Posted May 3, 2007 Share #4 Posted May 3, 2007 Andy explained that well. The 50s will show a little bit of cyan drift but it's minor. Cheers, Sean Link to post Share on other sites More sharing options...
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