Elsu Posted January 27, 2013 Share #1  Posted January 27, 2013 Advertisement (gone after registration) Last month I noticed some strange light spot in some shots, spot1.jpg and spot2.jpg on the boy's chest. Looking at these shots and one other, it seems the spot was resulted somehow from the camera/lens. I thought it was just some one-time error, for whatever reason. There cannot be any assisting focusing light from the camera for sure, but anyway.  Now today I got this spot3.jpg, and the same light spot appeared. Again on a boy's chest!  I tried to find a thread about this but in vain.  Monochrom + Summicron 35 + shot at 2.0 ISO 1600 and 640 raw file only These shots are exported directly to jpg in LR4 without any extra processing.  Anyone has any idea what can this be? Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/197019-monochrom-unknown-light-spot/?do=findComment&comment=2226133'>More sharing options...
Advertisement Posted January 27, 2013 Posted January 27, 2013 Hi Elsu, Take a look here Monochrom unknown light spot. I'm sure you'll find what you were looking for!
jtorrents Posted January 27, 2013 Share #2 Â Posted January 27, 2013 Any filter on lens? It seems a reflection from the filter... Link to post Share on other sites More sharing options...
Elsu Posted January 27, 2013 Author Share #3 Â Posted January 27, 2013 A Leica UVa filter. Â Can a little stink or dirt reflect somehow and result such a large spot? These are the 4 shots as such all together, among all the 2000 shots I made so far on the Monochrom. Link to post Share on other sites More sharing options...
mjh Posted January 27, 2013 Share #4  Posted January 27, 2013 It’s the filter – the combination of a filter and visible light sources is well known for producing this type of artefact. Since the filter is unnecessary anyway, you should remove it. Link to post Share on other sites More sharing options...
danhefner Posted February 4, 2013 Share #5 Â Posted February 4, 2013 Just don't take pictures of boys' chests. Â Seriously, try shooting with and without your filter. If you don't see spots without the filter, you'll know. Â D Link to post Share on other sites More sharing options...
01af Posted February 4, 2013 Share #6 Â Posted February 4, 2013 This has nothing to do with the camera. Also the filter is not the culprit (and much less are the boys' chests). It's possible that a filter enhances the issue but it's not the cause. Â The cause is a bright light source in the frame. For each bright light, a ghost image thereof will appear at a position that is the highlight's position's inversion in the center of the frame. In other words, draw a line from the highlight to the frame's center, then extend the line across the center by the same length, and there the ghost image will fall. If that position in the frame happens to be comparatively dark (and the highlight is sufficiently bright) then the ghost image of the highlight will become visible in the image. Â All lenses do that, always. In most cases, the ghost images are just too faint to notice. Link to post Share on other sites More sharing options...
Stealth3kpl Posted February 4, 2013 Share #7 Â Posted February 4, 2013 Advertisement (gone after registration) This phenomenon is not related to your monochrom. It is ball lightning. Pete Link to post Share on other sites More sharing options...
wattsy Posted February 4, 2013 Share #8 Â Posted February 4, 2013 This phenomenon is not related to your monochrom. It is ball lightning. Â Or one of those supernatural orb things. Link to post Share on other sites More sharing options...
lct Posted February 5, 2013 Share #9 Â Posted February 5, 2013 Remove the non-culprit filter and you won't see ghost images any more. Link to post Share on other sites More sharing options...
UliWer Posted February 5, 2013 Share #10 Â Posted February 5, 2013 Remove the non-culprit filter and you won't see ghost images any more. Â Shame! Â Prosecution of innocents on behalf of supernational phenomena... Link to post Share on other sites More sharing options...
lct Posted February 5, 2013 Share #11 Â Posted February 5, 2013 You mean supernatural perhaps? Link to post Share on other sites More sharing options...
UliWer Posted February 5, 2013 Share #12 Â Posted February 5, 2013 ... obviously those forces even change my texts.... Link to post Share on other sites More sharing options...
01af Posted February 5, 2013 Share #13 Â Posted February 5, 2013 Remove the non-culprit filter and you won't see ghost images any more. Yeah. Except when you will. Link to post Share on other sites More sharing options...
lct Posted February 5, 2013 Share #14 Â Posted February 5, 2013 Never seen ghost images sans filter so far. Did you? Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted February 6, 2013 Share #15 Â Posted February 6, 2013 Yeah. Except when you will. Also here you imply that it would happen even on film, or? Link to post Share on other sites More sharing options...
menos I M6 Posted February 6, 2013 Share #16 Â Posted February 6, 2013 These are ghost images from bright light sources in the frame. They do occur with a filter mounted. Mostly they disappear once you take the filter off. Â You can either shoot your lenses without filters or clone these spots out, if possible or just leave them. Â For this reason, I try to prevent filters, if I can, especially at night. Â Your camera is perfectly fine. Link to post Share on other sites More sharing options...
k-hawinkler Posted February 6, 2013 Share #17 Â Posted February 6, 2013 It sometimes can happen even without a filter mounted! Â http://www.l-camera-forum.com/leica-forum/leica-collectors-historica/252227-leica-serie-5-5-ndx1-13026-a.html Link to post Share on other sites More sharing options...
01af Posted February 6, 2013 Share #18 Â Posted February 6, 2013 Also here you imply that it would happen even on film, or? Yes, certainly! Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted February 6, 2013 Share #19 Â Posted February 6, 2013 OK, so it's enhanced by the filter... and by removing the filter you reduce the reflection, I see. Link to post Share on other sites More sharing options...
mjh Posted February 6, 2013 Share #20 Â Posted February 6, 2013 This kind of ghost images is created by light reflected by two planar surfaces, first by the cover glass of the sensor and then by a filter. While a planar surface within the lens itself can achieve a similar effect, the usual culprit is indeed a filter on the lens. Link to post Share on other sites More sharing options...
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