londonuk Posted February 15, 2007 Share #1 Â Posted February 15, 2007 Advertisement (gone after registration) Forgive me if this post is old hat. I have an M8 due in about 4-6 weeks, and reading reports about lenses, have realised that if you use a non Leica lens smaller than 35mm, with an IR filter you are subject to cyan drift at the edges. As non Leica lenses canon be coded (by Leica) this cyan effect can't be avaoided...................or can it ?? Â I would ask this question to my dealer (who shall remain nameless) but it took them 15 minutes and two employees to change the white balance on their shop demo M8. They were more interested in telling me of the "celebrities" who have now got the M8......... oh, and by the way, there is no waiting for them !!!!!!!!! Apparently Leica think it's good for the brand. Sounds like celebrity jewelery to me, something Leica, IMO should avoid. Link to post Share on other sites More sharing options...
chrism Posted February 15, 2007 Share #2 Â Posted February 15, 2007 Non-Leica lenses can be coded as the equivalent Leica lens by using the Sharpie-method detailed on this page. Remember that even if you do this, it will offer no benefits until the firmware correction for red vignetting/cyan drift appears in firmware 1.10. It is hoped that this new firmware will allow selection of focal length in a menu for non-coded lenses (making the Sharpie redundant), but the beta-testers aren't allowed to say anything about whether this will actually be the case. Â Chris Link to post Share on other sites More sharing options...
jaapv Posted February 15, 2007 Share #3 Â Posted February 15, 2007 Forgive me if this post is old hat. I have an M8 due in about 4-6 weeks, and reading reports about lenses, have realised that if you use a non Leica lens smaller than 35mm, with an IR filter you are subject to cyan drift at the edges. As non Leica lenses canon be coded (by Leica) this cyan effect can't be avaoided...................or can it ?? Â I would ask this question to my dealer (who shall remain nameless) but it took them 15 minutes and two employees to change the white balance on their shop demo M8. They were more interested in telling me of the "celebrities" who have now got the M8......... oh, and by the way, there is no waiting for them !!!!!!!!! Apparently Leica think it's good for the brand. Sounds like celebrity jewelery to me, something Leica, IMO should avoid. Â There is no waiting over here since December.....I would go to another shop if I were you. I just timed myself changing the white balance: 0.8 seconds.Panotools plugin is excellent at removing cyan vignetting. Link to post Share on other sites More sharing options...
londonuk Posted February 15, 2007 Author Share #4 Â Posted February 15, 2007 Thanks Chris, It's never going to be as easy as my Eos bodies and lenses, but that's exacly why I'm changing !!! Link to post Share on other sites More sharing options...
gravastar Posted February 16, 2007 Share #5 Â Posted February 16, 2007 There is a free 16bit Panorama Tools Photoshop plugin which will do a good job of correcting the cyan corners and at the same time correct for vignetting if needed. Â Panorama Tools Plug-ins (16-bit) Â I haven't had time to fully evaluate this yet but so far it looks very promising. Â Bob. Â PS. I know someone has posted examples using this on this board, at the moment I can't locate them. Oh, and you do need the 16bit MSVS pano12.dll as well as the plugin. Link to post Share on other sites More sharing options...
sean_reid Posted February 16, 2007 Share #6 Â Posted February 16, 2007 Forgive me if this post is old hat. I have an M8 due in about 4-6 weeks, and reading reports about lenses, have realised that if you use a non Leica lens smaller than 35mm, with an IR filter you are subject to cyan drift at the edges. As non Leica lenses canon be coded (by Leica) this cyan effect can't be avaoided...................or can it ?? Â I would ask this question to my dealer (who shall remain nameless) but it took them 15 minutes and two employees to change the white balance on their shop demo M8. They were more interested in telling me of the "celebrities" who have now got the M8......... oh, and by the way, there is no waiting for them !!!!!!!!! Apparently Leica think it's good for the brand. Sounds like celebrity jewelery to me, something Leica, IMO should avoid. Â Just to clarify, the cyan drift happens with any 35 mm or wider lens on the M8 when a 486 filter is used. The difference with the Leica lenses, of course, is that they can be coded so that (with firmware 1.10) they will trigger an in-camera correction for this. It's not just cyan at the edges or corners, its a drift into cyan that begins beyond a certain AOV (angle of view) and intensifies as that AOV widens. Â One can also see trace amounts of cyan drift with some 50 mm lenses but its so minor that it usually wouldn't need to be corrected. At the risk of sounding like a commercial, this is all discussed in depth in my M8 lens tests. Â Cheers, Â Sean Link to post Share on other sites More sharing options...
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