misha Posted January 22, 2008 Share #1 Posted January 22, 2008 Advertisement (gone after registration) any ideas? all shots resized but otherwise straight out @ 640, coded 35 asph cron leica IR/UV. thanks! misha Link to post Share on other sites More sharing options...
Advertisement Posted January 22, 2008 Posted January 22, 2008 Hi misha, Take a look here green, not red, dot. I'm sure you'll find what you were looking for!
rob_x2004 Posted January 22, 2008 Share #2 Posted January 22, 2008 Internal lens reflection from your strongest point light source. Lamp post, hanging light, naked bulb. Maybe ditch the filter and try that. Link to post Share on other sites More sharing options...
misha Posted January 22, 2008 Author Share #3 Posted January 22, 2008 thanks, but thats not ´normal´ , right? Link to post Share on other sites More sharing options...
rob_x2004 Posted January 22, 2008 Share #4 Posted January 22, 2008 The second and the third I would have thought normalish, yea. With an SLR you can manage the phenomena. Rangefinders its a bit more hit and miss. The first image looks a bit odd. Specifically wrt the m8 I cant say. Someone might let you know whether shooting another ISO gives the camera more lattitude before it frazzles the sensor and promote artifacts, so that you can rule that out. But it always seems to be the same angle and equidistant from the centre line. More than that, equidistant from dead centre now I look at it. Presumably wide open? Lens or filter induced, people? You will probably start getting "there have been threads on this before" flames:o . Link to post Share on other sites More sharing options...
lct Posted January 22, 2008 Share #5 Posted January 22, 2008 ... leica IR/UV... Ghost images caused by your filter. Link to post Share on other sites More sharing options...
techpan Posted January 22, 2008 Share #6 Posted January 22, 2008 It is internal reflection from your UV/IR filter. Shoot the same scene without the filter and the green blurs will go away. It's an unfortunate anomaly of the filters leica sent. Link to post Share on other sites More sharing options...
misha Posted January 22, 2008 Author Share #7 Posted January 22, 2008 Advertisement (gone after registration) It is internal reflection from your UV/IR filter. Shoot the same scene without the filter and the green blurs will go away. It's an unfortunate anomaly of the filters leica sent. thanks. is this something one should anticipate in certain environments? it happened before, but never in back to back to back situations. always in low-light though. Link to post Share on other sites More sharing options...
misha Posted January 22, 2008 Author Share #8 Posted January 22, 2008 Ghost images caused by your filter. thanks. searched for ghosting and now know more. m Link to post Share on other sites More sharing options...
lct Posted January 22, 2008 Share #9 Posted January 22, 2008 .. It's an unfortunate anomaly of the filters leica sent. Got ghost images with mere UV filters as well. Not sure if there is a significant difference between Leica's and other filters from this standpoint. Link to post Share on other sites More sharing options...
ho_co Posted January 22, 2008 Share #10 Posted January 22, 2008 Not so much "the filters Leica sent." Any plane filter will do the same, as LCT said, red filter, UVa filter, yellow filter. Also, certain optical designs are more prone to these reflections than others. I think I've seen other threads mentioning the 35/2 ASPH in this regard. In the 70's Pentax went so far as to offer non-plane filters for some of their lenses to avoid this kind of artifact. Nice shots, by the way, Michael! I really like the storefront scene and the play of colors in the father/children picture. --HC Link to post Share on other sites More sharing options...
stunsworth Posted January 22, 2008 Share #11 Posted January 22, 2008 I had exactly the same thing occur recently photographing at night with a line of street lights in the shot. They all had ghost imaged near the bottom of the frame. This was with a Nocti and filter. Link to post Share on other sites More sharing options...
misha Posted January 22, 2008 Author Share #12 Posted January 22, 2008 Not so much "the filters Leica sent." Any plane filter will do the same, as LCT said, red filter, UVa filter, yellow filter. Also, certain optical designs are more prone to these reflections than others. I think I've seen other threads mentioning the 35/2 ASPH in this regard. In the 70's Pentax went so far as to offer non-plane filters for some of their lenses to avoid this kind of artifact. Nice shots, by the way, Michael! I really like the storefront scene and the play of colors in the father/children picture. --HC thanks. those were not (by far) the best photos from that day, just the ones with ghosting. that said, the final final selection will probably be in b/w here are a few samples http://images33.fotki.com/v1068/photos/1/112904/5834146/7am-vi.jpg http://images33.fotki.com/v1117/photos/1/112904/5834146/man_balcony-vi.jpg http://images31.fotki.com/v1039/photos/1/112904/5834146/trinity-vi.jpg p.s. dont really edit them. channel mixer, levels and curves. thats all. but i should Link to post Share on other sites More sharing options...
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