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schnitzer79 · 11-14-2014, 12:21 AM

Dont know if you guys can see it but last night when viewing on my monitor at home, it was way more obvious.At work today, I can hardly see it. There is a "pixelation" on the left hand side when I shot against the solid black background. It was shot with the 55-300 @ 150mm f18 paired with the Raynox DCR-150. I used an off camera flash for the shot and the pixelations were visible in the raw photo as well, so no they are not a result of anything done in PP.

I actually forgot to take my UV filter off before attaching the Raynox so not sure if it has anything to do with it. Could this be a result of the absence of an AA filter on the k-50 since the black background was actually a notebook case (yeah stupid I know) with a very faint pattern?
Just want someone with a calibrated monitor to tell me if its visible because it could be my monitor at home for all I know. Its a Philips LED 22", so probably not the best for photography.

Last edited by schnitzer79; 11-14-2014 at 05:30 AM.

madhurvyas · 11-14-2014, 12:45 AM

I dont see any pixelation, maybe you have some issue with monitor. try cleaning it.

schnitzer79 · 11-14-2014, 02:22 AM

thanks for your reply.what do you mean by cleaning it?my monitor is spotless and I dont think tiny specks of dust on the screen can cause pixelation.

**patrick9** · 11-14-2014, 05:37 AM

I do see a pattern but it goes all the way across the shot in a line shape I assume it is a pattern in the back ground . It is about half way between the caterpillar and the top.

schnitzer79 · 11-14-2014, 05:53 AM

thinking about it, that might be a result of using flash against a black background. there is some banding present, so maybe thats what it is. is there any way to solve that except for PP? flash power maybe or flash direction?

Not a Number · 11-14-2014, 06:00 AM

I don't quite see the phenomenon in question. I would guess it is a JPEG conversion/compression artifact that you often see in color/tone gradients. Google "Gradient Banding" or "JPEG Gradient Banding" for possible solutions.

schnitzer79 · 11-14-2014, 06:22 AM

Originally posted by Not a Number

I don't quite see the phenomenon in question. I would guess it is a JPEG conversion/compression artifact that you often see in color/tone gradients. Google "Gradient Banding" or "JPEG Gradient Banding" for possible solutions.

dont think it is because I could see it straight in ACR with the RAW file.

Not a Number · 11-14-2014, 08:19 AM

Originally posted by schnitzer79

dont think it is because I could see it straight in ACR with the RAW file.

Are you viewing the actual RAW file or the preview? Are you viewing the actual pixels (100% zoom) or a scaled image (<100%)?

esrandall · 11-14-2014, 09:23 AM

I can make out the "band" (above the caterpillar's head) running across teh image, but nothing that looks really pixellated to me.

mikeSF · 11-14-2014, 09:35 AM

i see banding in the black area consistent with jpg compression

**sergysergy** · 11-14-2014, 10:03 AM

I just see a green caterpillar

schnitzer79 · 11-14-2014, 10:31 AM

when i first saw it, i thought it might be sensor related, but hasnt happened before and is not present in the other images i took of the caterpillar.

Originally posted by Not a Number

Are you viewing the actual RAW file or the preview? Are you viewing the actual pixels (100% zoom) or a scaled image (<100%)?

not sure what you actually mean, but i was viewing the raw file in ACR at both 100% and fit to page view and I could see the pixelation and banding in both.

**crewl1** · 11-21-2014, 10:33 PM

I don't see any pixellation either. And this is a lovely shot.

11-14-2014, 12:21 AM	#1
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248	Weird "pixelation" when shooting against a solid black background Lens: DA 55-300 Camera: K-50 Dont know if you guys can see it but last night when viewing on my monitor at home, it was way more obvious.At work today, I can hardly see it. There is a "pixelation" on the left hand side when I shot against the solid black background. It was shot with the 55-300 @ 150mm f18 paired with the Raynox DCR-150. I used an off camera flash for the shot and the pixelations were visible in the raw photo as well, so no they are not a result of anything done in PP. I actually forgot to take my UV filter off before attaching the Raynox so not sure if it has anything to do with it. Could this be a result of the absence of an AA filter on the k-50 since the black background was actually a notebook case (yeah stupid I know) with a very faint pattern? Just want someone with a calibrated monitor to tell me if its visible because it could be my monitor at home for all I know. Its a Philips LED 22", so probably not the best for photography. Last edited by schnitzer79; 11-14-2014 at 05:30 AM.

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11-14-2014, 12:45 AM	#2
madhurvyas Veteran Member Join Date: Jan 2008 Location: Bikaner (Raj)-India Photos: Gallery Posts: 562	I dont see any pixelation, maybe you have some issue with monitor. try cleaning it.

11-14-2014, 02:22 AM	#3
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248 Original Poster	thanks for your reply.what do you mean by cleaning it?my monitor is spotless and I dont think tiny specks of dust on the screen can cause pixelation.

11-14-2014, 05:37 AM	#4
patrick9 Site Supporter Join Date: Feb 2011 Location: Murfreesboro Tennessee Photos: Gallery \| Albums Posts: 3,458	I do see a pattern but it goes all the way across the shot in a line shape I assume it is a pattern in the back ground . It is about half way between the caterpillar and the top.

11-14-2014, 05:53 AM	#5
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248 Original Poster	thinking about it, that might be a result of using flash against a black background. there is some banding present, so maybe thats what it is. is there any way to solve that except for PP? flash power maybe or flash direction?

11-14-2014, 06:00 AM	#6
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	I don't quite see the phenomenon in question. I would guess it is a JPEG conversion/compression artifact that you often see in color/tone gradients. Google "Gradient Banding" or "JPEG Gradient Banding" for possible solutions.

11-14-2014, 06:22 AM	#7
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248 Original Poster	Originally posted by Not a Number I don't quite see the phenomenon in question. I would guess it is a JPEG conversion/compression artifact that you often see in color/tone gradients. Google "Gradient Banding" or "JPEG Gradient Banding" for possible solutions. dont think it is because I could see it straight in ACR with the RAW file.

11-14-2014, 08:19 AM	#8
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	Originally posted by schnitzer79 dont think it is because I could see it straight in ACR with the RAW file. Are you viewing the actual RAW file or the preview? Are you viewing the actual pixels (100% zoom) or a scaled image (<100%)?

11-14-2014, 09:23 AM	#9
esrandall Closed Account Join Date: Feb 2014 Location: Sumner, WA Photos: Albums Posts: 965	I can make out the "band" (above the caterpillar's head) running across teh image, but nothing that looks really pixellated to me.

11-14-2014, 09:35 AM	#10
mikeSF Pentaxian Join Date: Jan 2009 Location: East Bay Area, CA Photos: Gallery Posts: 6,622	i see banding in the black area consistent with jpg compression

11-14-2014, 10:03 AM	#11
sergysergy Site Supporter Join Date: Jan 2011 Photos: Gallery Posts: 5,175	I just see a green caterpillar

11-14-2014, 10:31 AM	#12
schnitzer79 Pentaxian Join Date: Jul 2013 Photos: Albums Posts: 1,248 Original Poster	when i first saw it, i thought it might be sensor related, but hasnt happened before and is not present in the other images i took of the caterpillar. Originally posted by Not a Number Are you viewing the actual RAW file or the preview? Are you viewing the actual pixels (100% zoom) or a scaled image (<100%)? not sure what you actually mean, but i was viewing the raw file in ACR at both 100% and fit to page view and I could see the pixelation and banding in both.

11-21-2014, 10:33 PM	#13
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807	I don't see any pixellation either. And this is a lovely shot.

Macro Weird "pixelation" when shooting against a solid black background

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