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09-21-2011, 09:22 AM   #1
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[langtitle=it]ALBA problem[/langtitle]

Ho scattato questa foto all'alba, con la K5+18/135, ( EXIF 1/320S- F/9 - ISO 100 - RAW )
ma da quello che si vede la foto presenta delle striature o righe, la reflex funziona bene e nel l'uso normale non presenta difetti, ma gi la seconda volta che succede, cosa pu essere?
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I took this picture at dawn, with the K5 +18 / 135 (EXIF 1/320S- F / 9 - ISO 100 - RAW)
but from what I can see the photo shows streaks or lines, the camera works well in normal use and not defective, but it is already the second time this has happened, what can it be?




09-21-2011, 10:51 AM   #2
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Hmm... I'm not seeing any streaks or lines... Sometimes sky shows up with lines on the camera's rear lcd I assume because of small size.
09-21-2011, 10:59 AM   #3
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Quindi non vedi delle ondulazioni che circonda il sole, che man mano si allargano su tutto il cielo,qualcuno altro pu confermarmi che la foto e pulita!
oppure sar il mio monitor difettoso.
09-21-2011, 11:03 AM   #4
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They are visible. Could it be the raw conversion software you are using? Perhaps try another method and see if it goes away.

09-21-2011, 11:03 AM   #5
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I can see clearly concentric lines around the sun. Sometimes with heavy processing the same problem arises but never with the original raw file. Only when converted to a tiff and some 'destructive' editing these kind of artifacts seem to appear. Perhaps it is the raw-converter (software-related)?

Edit: To late crewl1 beat me to it!
09-21-2011, 11:21 AM   #6
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Allora un problema di software! personalmente pensavo ad un difetto del sensore.
09-21-2011, 11:23 AM   #7
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Conversion of your pictures is most often done using sRGB, what only has 8 bit resolution per colour channel.

If the contrast in high light is small, you'll get circular lines around light sources.
Most likely your source is your program you use to convert to jpeg.

Try in postprocessing to increase your Ev (exposure) and darken in the shadows.
It will wash out the sun somewhat, but you'll have less lines.

- Bert
09-21-2011, 11:26 AM   #8
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QuoteOriginally posted by crewl1 Quote
They are visible. Could it be the raw conversion software you are using? Perhaps try another method and see if it goes away.
E presente anche con photoshop,convertito in JPEG il difetto e assente ho poco visibile, ma ripeto solo su questo tipo di foto,con il sole dentro il fotogramma e con poca luce.

09-21-2011, 11:29 AM   #9
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QuoteOriginally posted by bymy141 Quote
Conversion of your pictures is most often done using sRGB, what only has 8 bit resolution per colour channel.

If the contrast in high light is small, you'll get circular lines around light sources.
Most likely your source is your program you use to convert to jpeg.

Try in postprocessing to increase your Ev (exposure) and darken in the shadows.
It will wash out the sun somewhat, but you'll have less lines.

- Bert
GRAZIE bymy141 appena posso faccio questa prova, ma credo che sia cosi come dici tu.
09-21-2011, 05:44 PM   #10
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The sun is not a circle to me.
09-21-2011, 07:33 PM   #11
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I'd say it is the RAW conversion or the jpg compression.

I can see the banding around the sun as well as in the lower left above the water. The entire image also looks pixelated.
09-21-2011, 11:17 PM   #12
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It looks like posterization. Doing all your edits in 16 bit mode sometimes helps, but there are other ways of dealing with it.

EDIT: Also, doing edits using adjustments layers helps. You can flatten and convert to jpeg when you have a "final" version.

Last edited by HawaiianOnline; 09-21-2011 at 11:18 PM. Reason: Added content
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