choon wee Posted June 17, 2011 Share #1 Posted June 17, 2011 Advertisement (gone after registration) Hi everyone, Does anyone of you experience this problem? I constantly getting the same result whenever I shot a back lid condition. It really worries me. Hope I can get some advise from you guys. Perhaps I have done something wrong on my side. Hope the attached photos illustrates the specific problem I'm facing. Thanks. The picture is take with RAW format. The problem seem to be occur when I shoot in back lid condition or over expose condition. The problem does not appear when I take photo indoor or in more neutral environment. Link to post Share on other sites More sharing options...
Advertisement Posted June 17, 2011 Posted June 17, 2011 Hi choon wee, Take a look here Does anyone of you experience this problem?. I'm sure you'll find what you were looking for!
mjh Posted June 17, 2011 Share #2 Posted June 17, 2011 That’s a classical case of blooming. We rarely see this since the sensor of the M9 would have to be overexposed by about 10 EV above the limit of its dynamic range until the pixels succumb to the flood of excess photo-electrons, despite anti-blooming gates doing their best trying to drain it away. Link to post Share on other sites More sharing options...
choon wee Posted June 17, 2011 Author Share #3 Posted June 17, 2011 That’s a classical case of blooming. We rarely see this since the sensor of the M9 would have to be overexposed by about 10 EV above the limit of its dynamic range until the pixels succumb to the flood of excess photo-electrons, despite anti-blooming gates doing their best trying to drain it away. Thanks. After I googled sensor blooming, I got the explanation I was looking for. However, a few more question arose. Is my M9 the only M9 that is having this problem? Does most M9 users report suffer from this issue? Anyone experience this? Repair it or live with it? Link to post Share on other sites More sharing options...
wda Posted June 17, 2011 Share #4 Posted June 17, 2011 Which lens produced this effect? Have you tried other lenses in similar circumstances? Any unusual attachments or interference from 'your person' (such as fingers intruding; not that that would produce this effect)? Link to post Share on other sites More sharing options...
choon wee Posted June 17, 2011 Author Share #5 Posted June 17, 2011 Which lens produced this effect? Have you tried other lenses in similar circumstances? Any unusual attachments or interference from 'your person' (such as fingers intruding; not that that would produce this effect)? This was shot with Noctilux 50mm f1. The sensor blooming seems to occur on my Nokton 35mm f1.2 as well. So I'm quite sure it's not a lens problem. I shot with Raw(Compress). Auto ISO. Manual WB. Using SanDisk Ultra 8GB. Nothing unusual when I shoot in more neutral. Neutral I mean even lighting. But once I shoot something like back lighting situation, this would happen. Link to post Share on other sites More sharing options...
pop Posted June 17, 2011 Share #6 Posted June 17, 2011 It appears that the sun was just above the roof, i.e. well within the image. That would explain the massive over-exposure. Link to post Share on other sites More sharing options...
SJP Posted June 17, 2011 Share #7 Posted June 17, 2011 Advertisement (gone after registration) Also the sun is outside the (centre weighted) light metering region. Lock and recompose or go manual. Link to post Share on other sites More sharing options...
mjh Posted June 17, 2011 Share #8 Posted June 17, 2011 Is my M9 the only M9 that is having this problem? Does most M9 users report suffer from this issue? It could happen with any M9 (or M8 for that matter) but it’s a rare occurrence as the over-exposure has to be quite severe. Link to post Share on other sites More sharing options...
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