Help, Please (Page 2): Thank you. Never thought of that; however, many previous pictures have been taken with the white bird against nothing but a blue sky and no band. I'm pretty sure...

Floyd Loc: Misplaced Texan in Florence, Alabama

gvarner wrote:

I’ve run into chromatic aberration before. It kind of looks like that. Clear blue skies seem to be the most notorious for that. It’s similar to the effect from using a prism.

Thank you. Never thought of that; however, many previous pictures have been taken with the white bird against nothing but a blue sky and no band. I'm pretty sure that time of day, exact relationship of bird to sun and even amount of moisture in the air could all contribute to this happening. Thank You again.

Floyd Loc: Misplaced Texan in Florence, Alabama

DirtFarmer wrote:

Banding? Usually seen on very small gradients when using 8 bit color spaces.

Thank you for your comment.

Bill_de Loc: US

How much of the image are you showing us? A small piece of dirt can look huge if you blow the picture up enough.

Were these 'bars' on 4 consecutive photos?

Floyd Loc: Misplaced Texan in Florence, Alabama

Bill_de wrote:

How much of the image are you showing us? A small piece of dirt can look huge if you blow the picture up enough.

Were these 'bars' on 4 consecutive photos?

Thank you for your time. Bands were on all four photos and the image is SOOC.

Bill_de Loc: US

Floyd wrote:

Thank you for your time. Bands were on all four photos and the image is SOOC.

Thanks Floyd. What I was wondering were they four consecutive photos, or random among all the shots taken?

If only on four consecutive shots and then gone it could be something that blew into the frame.

Good luck!

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Floyd Loc: Misplaced Texan in Florence, Alabama

Bill_de wrote:

Thanks Floyd. What I was wondering were they four consecutive photos, or random among all the shots taken?

If only on four consecutive shots and then gone it could be something that blew into the frame.

Good luck!

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Thank you again.

amfoto1 Loc: San Jose, Calif. USA

Floyd wrote:

Thank you for your input. I've now cleaned the sensor and tomorrow I'll go back to the dam and see if I can replicate the shot.

You can test the sensor easily without going anywhere... just take a shot of a clear blue sky or plain white wall. Set your lens aperture small... if possible even smaller than you'd normally use, such as f/16 or f/22. And try to avoid underexposure, to best be able to see if there's still anything on the sensor.

amfoto1 Loc: San Jose, Calif. USA

Floyd wrote:

Thank you for your time. Bands were on all four photos and the image is SOOC.

It's probably in all your photos... but hides in the scene details of other shots. It may only be distinct when you shoot a clear blue sky or something else with no detail what-so-ever.

Something on your sensor also can be hidden when you use larger f-stops.... f/2.8, etc. Doesn't show up clearly until you stop down to f/16, f/22. (I haven't checked what f-stop you used in that photo.)

EDIT: I just checked... you were using f/14 for that shot. That and the clear blue sky are why that smear on the sensor is showing up in the image. Also, if you cropped the image, you will have magnified any flaws such as a dirty sensor, along with the subject.

Floyd Loc: Misplaced Texan in Florence, Alabama

amfoto1 wrote:

You can test the sensor easily without going anywhere... just take a shot of a clear blue sky or plain white wall. Set your lens aperture small... if possible even smaller than you'd normally use, such as f/16 or f/22. And try to avoid underexposure, to best be able to see if there's still anything on the sensor.

Thank you for your information and suggestion. Sensor cleaned and no band showing.

Floyd Loc: Misplaced Texan in Florence, Alabama

amfoto1 wrote:

It's probably in all your photos... but hides in t... (show quote)

Thank you for your information. Sensor cleaned and now no band.