Digicamera.net - Valokuvausfoorumi

Waakku^ kirjoitti:Hjelp! Missä mahtaa olla vika, kun joskus vastavaloon kuvattaessa tulee tälläistä jälkeä. Kamera huoltoon vai myyntiin ;)

Guess what: this isn't blooming. Look carefully and you'll notice that the disk of the sun is outside the top of the image. The dozens of similar images with the sun actually in the photo as I intended and the horizon straight were fine. What happened is that the sun leaked through the black paint on the edge of the CCD. CCDs need to see black along the edges outside the image so they can calibrate the rest of the active image to what black should look like. If you are stupid enough to focus the direct light of the sun on the very edge of the calibration area of the CCD with an ultra-wide angle lens then the CCD presumes that the elevated brightness of the direct sun sneaking under the black paint should be black. The camera's circuits then corrected this elevated level back to black and at the same time corrected the rest of the image which left the darkened band. Moral? Compose correctly and you'll be fine.