Pixels showing too much?

noahdsnell · 03-21-2013, 10:30 AM

I am noticing an abnormally small amount of pixels (so it seeems) in certain areas of a photo in which I have taken in the DNG format.It occurs in many images. Attached is a screenshot of one example at a 100% crop. Is this normal??? If not, what can I do to prevent it? I am using the Pentax K-5 II.

Attached Images

**Lowell Goudge** · 03-21-2013, 10:43 AM

What you are seeing is JPEG compression, the K5 is more aggressive than the K7 or K10 in my opinion

enoeske · 03-21-2013, 11:09 AM

You are seeing a small amount of pixels because its a 100% crop. To see more pixels, don't crop the image.

noahdsnell · 03-21-2013, 11:17 AM

@Lowell, how could it be a result of JPEG compression if I was shooting RAW?
@enoeske, are you saying that this is normal?

vonBaloney · 03-21-2013, 11:22 AM

Not sure what you are talking about -- what am I supposed to be seeing in the example?

enoeske · 03-21-2013, 11:24 AM

Originally posted by noahdsnell

@Lowell, how could it be a result of JPEG compression if I was shooting RAW?
@enoeske, are you saying that this is normal?

I'm saying that you don't know what a pixel is.

noahdsnell · 03-21-2013, 11:25 AM

@vonBaloney, the pixels showing significantly in the turtle's eye. I am not sure whether or not it is normal.

noahdsnell · 03-21-2013, 11:30 AM - **1 Like**

@enoeske, I know what a pixel is. I know there are less pixels in the frame at the 100% crop. I am just saying that I do not normally notice pixels blending like they are in the turtle's eye. I am not sure whether or not it is normal, or if there is something I can do to fix it.

vonBaloney · 03-21-2013, 11:38 AM

Ok, blockiness there, gotcha. So if this was shot in raw and converted to tif "losslessly" then you're right, you should not be showing those artifacts (from that). If that is true, that can't possibly be a 100% crop because a 100% crop means a pixel in the image is exactly one pixel on the monitor. But it looks more like compression artifacts -- who converted/how did it become a tif? Picasa?

Parallax · 03-21-2013, 11:44 AM

Originally posted by enoeske

I'm saying that you don't know what a pixel is.

Or perhaps you don't know what he's asking?

noahdsnell · 03-21-2013, 11:47 AM

Originally posted by vonBaloney

Ok, blockiness there, gotcha. So if this was shot in raw and converted to tif "losslessly" then you're right, you should not be showing those artifacts (from that). If that is true, that can't possibly be a 100% crop because a 100% crop means a pixel in the image is exactly one pixel on the monitor. But it looks more like compression artifacts -- who converted/how did it become a tif? Picasa?

@vonBaloney, I converted it with FastStone, but the same effect is showing up on the original RAW file (along with some others)

**jatrax** · 03-21-2013, 11:52 AM

What are using to view the RAW? Some viewers only show the jpeg thumbnail not the actual RAW conversion. That really looks like it is the thumbnail blown up to 1:1 not the actual RAW.

Try the same shot shooting jpeg and see if the issue is still there.

What are you using to process your RAW files? Lightroom? Aperture?

vonBaloney · 03-21-2013, 11:54 AM

Not possible in the original RAW at 100%, so your viewers and converters are not showing you the right thing. In absence of Lightroom or other (that works right), do you have the Pentax software?

noahdsnell · 03-21-2013, 11:59 AM

Originally posted by jatrax

What are using to view the RAW? Some viewers only show the jpeg thumbnail not the actual RAW conversion. That really looks like it is the thumbnail blown up to 1:1 not the actual RAW.

Try the same shot shooting jpeg and see if the issue is still there.

What are you using to process your RAW files? Lightroom? Aperture?

I am just using FastStone for a quick edit. I do not have a copy of Photoshop on my laptop yet unfortunately. I would try to shoot jpeg, but not all images are coming up like this. So I would need to find a situation in which I can tell from the camera that it is having this issue. But I think you are right, I am probably viewing a 100% crop of an enlarged thumbnail. Do you have any suggestions for a good RAW photo viewer?

noahdsnell · 03-21-2013, 12:06 PM

I quickly installed a trial version of Photoshop Elements for this specific purpose, and it looks as if the image is coming out much, much better on there. I guess FastStone was just showing a 100% crop of the thumbnail, and converting incorrectly. Such a good program otherwise. Thanks for your help. Does anyone know a good RAW photo viewer (not editor) that works as it should?

03-21-2013, 10:30 AM	#1
noahdsnell Forum Member Join Date: Jun 2012 Posts: 68	Pixels showing too much? I am noticing an abnormally small amount of pixels (so it seeems) in certain areas of a photo in which I have taken in the DNG format.It occurs in many images. Attached is a screenshot of one example at a 100% crop. Is this normal??? If not, what can I do to prevent it? I am using the Pentax K-5 II. Attached Images

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03-21-2013, 10:43 AM	#2
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,891	What you are seeing is JPEG compression, the K5 is more aggressive than the K7 or K10 in my opinion

03-21-2013, 11:09 AM	#3
enoeske Veteran Member Join Date: Jul 2009 Location: Surprise, Az Photos: Gallery Posts: 2,136	You are seeing a small amount of pixels because its a 100% crop. To see more pixels, don't crop the image.

03-21-2013, 11:17 AM	#4
noahdsnell Forum Member Join Date: Jun 2012 Posts: 68 Original Poster	@Lowell, how could it be a result of JPEG compression if I was shooting RAW? @enoeske, are you saying that this is normal?

03-21-2013, 11:22 AM	#5
vonBaloney Pentaxian Join Date: Oct 2011 Location: Albuquerque, NM Posts: 6,029	Not sure what you are talking about -- what am I supposed to be seeing in the example?

03-21-2013, 11:24 AM	#6
enoeske Veteran Member Join Date: Jul 2009 Location: Surprise, Az Photos: Gallery Posts: 2,136	Originally posted by noahdsnell @Lowell, how could it be a result of JPEG compression if I was shooting RAW? @enoeske, are you saying that this is normal? I'm saying that you don't know what a pixel is.

03-21-2013, 11:25 AM	#7
noahdsnell Forum Member Join Date: Jun 2012 Posts: 68 Original Poster	@vonBaloney, the pixels showing significantly in the turtle's eye. I am not sure whether or not it is normal.

03-21-2013, 11:30 AM - 1 Like	#8
noahdsnell Forum Member Join Date: Jun 2012 Posts: 68 Original Poster	@enoeske, I know what a pixel is. I know there are less pixels in the frame at the 100% crop. I am just saying that I do not normally notice pixels blending like they are in the turtle's eye. I am not sure whether or not it is normal, or if there is something I can do to fix it.

03-21-2013, 11:38 AM	#9
vonBaloney Pentaxian Join Date: Oct 2011 Location: Albuquerque, NM Posts: 6,029	Ok, blockiness there, gotcha. So if this was shot in raw and converted to tif "losslessly" then you're right, you should not be showing those artifacts (from that). If that is true, that can't possibly be a 100% crop because a 100% crop means a pixel in the image is exactly one pixel on the monitor. But it looks more like compression artifacts -- who converted/how did it become a tif? Picasa?

03-21-2013, 11:44 AM	#10
Parallax Senior Moderator Loyal Site Supporter Join Date: Apr 2008 Location: South Dakota Photos: Gallery Posts: 19,333	Originally posted by enoeske I'm saying that you don't know what a pixel is. Or perhaps you don't know what he's asking?

03-21-2013, 11:47 AM	#11
noahdsnell Forum Member Join Date: Jun 2012 Posts: 68 Original Poster	Originally posted by vonBaloney Ok, blockiness there, gotcha. So if this was shot in raw and converted to tif "losslessly" then you're right, you should not be showing those artifacts (from that). If that is true, that can't possibly be a 100% crop because a 100% crop means a pixel in the image is exactly one pixel on the monitor. But it looks more like compression artifacts -- who converted/how did it become a tif? Picasa? @vonBaloney, I converted it with FastStone, but the same effect is showing up on the original RAW file (along with some others)

03-21-2013, 11:52 AM	#12
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	What are using to view the RAW? Some viewers only show the jpeg thumbnail not the actual RAW conversion. That really looks like it is the thumbnail blown up to 1:1 not the actual RAW. Try the same shot shooting jpeg and see if the issue is still there. What are you using to process your RAW files? Lightroom? Aperture?

03-21-2013, 11:54 AM	#13
vonBaloney Pentaxian Join Date: Oct 2011 Location: Albuquerque, NM Posts: 6,029	Not possible in the original RAW at 100%, so your viewers and converters are not showing you the right thing. In absence of Lightroom or other (that works right), do you have the Pentax software?

03-21-2013, 11:59 AM	#14
noahdsnell Forum Member Join Date: Jun 2012 Posts: 68 Original Poster	Originally posted by jatrax What are using to view the RAW? Some viewers only show the jpeg thumbnail not the actual RAW conversion. That really looks like it is the thumbnail blown up to 1:1 not the actual RAW. Try the same shot shooting jpeg and see if the issue is still there. What are you using to process your RAW files? Lightroom? Aperture? I am just using FastStone for a quick edit. I do not have a copy of Photoshop on my laptop yet unfortunately. I would try to shoot jpeg, but not all images are coming up like this. So I would need to find a situation in which I can tell from the camera that it is having this issue. But I think you are right, I am probably viewing a 100% crop of an enlarged thumbnail. Do you have any suggestions for a good RAW photo viewer?

03-21-2013, 12:06 PM	#15
noahdsnell Forum Member Join Date: Jun 2012 Posts: 68 Original Poster	I quickly installed a trial version of Photoshop Elements for this specific purpose, and it looks as if the image is coming out much, much better on there. I guess FastStone was just showing a 100% crop of the thumbnail, and converting incorrectly. Such a good program otherwise. Thanks for your help. Does anyone know a good RAW photo viewer (not editor) that works as it should?