The Squirrel Mafia's RawTherapee thread. Now with 50% more excellence & win!

The Squirrel Mafia · 09-29-2016, 02:06 PM

I haven't brought it up on the pixel forum. Then again, Lightroom pictures tend to be more grainier. I guess you give up something for something else. Capture One does an even better job of controlling the "false coloring".

I shot the following image with my K-50 a while ago. I processed the DNG in RawTherapee & Lightroom. It's a 100% pixel peep image. You'll get an idea.

ISO 12800 RawTherapee: "false coloring" towards the right of EXIT button & just "above" & around the ENTER button.

ISO 12800 Lightroom: more grainier & the color is off slightly.

Then again, this is ISO 12800 coming from an APS-C camera that produces 12bit RAW files. I guess you can say that it's pretty good.

Last edited by The Squirrel Mafia; 09-29-2016 at 05:50 PM.

**todd** · 09-29-2016, 02:52 PM

Can't say that I can see it, although at times I think maybe I am seeing something in those spots but it's hard to tell... At times I think maybe I am seeing some super light hazy green or orange, but then at another glance it looks normal. On my second and third monitors (that are a bit darker) I definitely can't see anything...

Possible to describe what the false coloring looks like to you in the RT version above? I assume you've went through each filter/tool you're applying turning them on and off and none of them impact that false coloring, right?

The Squirrel Mafia · 09-29-2016, 03:24 PM

Yeah. I've pretty much exhausted all of my tools & filters. From the NR tools to the demosaicing tools.

It could be a byproduct of the demosaicing algorithm & bayer sensor. It could also be the tone curves, contrast, & color curves. The "false coloring" is basically a large faint patch of a greenish, yellowish, reddish, & blueish tint randomly spread across the image. It's especially noticeable in dark & light areas of the image. Instead of those areas being completely dark or light, you'll see patches that are slightly off colored with the above tints.

The images below show it better.

ISO 12800 RawTherapee: the dark area towards the right should be dark, not "greenish". It's a black table with a semi-"white marble" finish.

ISO 12800 RawTherapee: grainy & more white speckled.

But yeah, this starts happening as the ISO climbs. Most of the current Pentax APS-C cameras (K-5 on forward) look to be good up to ISO 6400 & then the "false coloring" starts to come in.

**todd** · 09-29-2016, 03:47 PM

Ok.. Definitely see it in these examples and see that at times in my images too and have just always called it "noise" haha... Time to post this on the pixel forum!

The Squirrel Mafia · 09-29-2016, 06:10 PM

Feel free to post it if you want to.

One thing that I've noticed is that the K-70 has much better false coloring control. What you see at ISO 12800 on the other APS-C Pentax models is what you roughly get at ISO 25600 on the K-70. The K-1 is obviously better. The future looks good for Pentax.

**brightseal** · 09-29-2016, 06:22 PM

Originally posted by The Squirrel Mafia

The future looks good for Pentax.

So basically in a couple years the K3 is going to be trash?

The Squirrel Mafia · 09-29-2016, 08:11 PM

^ No. The K-3 is gonna be good for at least another 6 years at the minimum. Same thing with the current batch of Pentax APS-C cameras. Sensors are advancing, but not by leaps & bounds yet.

My guess is that you'll really start to notice the difference by the year 2025.

**brightseal** · 09-29-2016, 08:26 PM

Originally posted by The Squirrel Mafia

The K-3 is gonna be good for at least another 6 years at the minimum

On the one hand that's great but on the other, 100,000 actuations doesn't seem like it will actually last that long....

The Squirrel Mafia · 09-30-2016, 08:19 AM - **1 Like**

^ That should be good for a long while. It depends on what you shoot & how you shoot. Lots of FPS action? Yeah. Might not last that long. Random single pictures? Gonna last a lot longer.

If I recall, the K-3II is even good for 200,000 actuations. That's like an eternity!

**brightseal** · 09-30-2016, 08:47 AM

Originally posted by The Squirrel Mafia

Lots of FPS action?

what is FPS?

Fat Albert · 09-30-2016, 08:51 AM

Originally posted by donlass

what is FPS?

Frames per second.

**brightseal** · 10-03-2016, 11:59 PM

I guess I should read through this thread but in the meantime I downloaded it. Can I incorporate RT into LR or does it only work separately?

I'm a beginner so I'm still figuring things out. Can this pic be salvaged with RT?

The Squirrel Mafia · 10-04-2016, 07:31 AM

^ This is a completely independent program. It's basically a "competitor" to Lightroom like DXO, CaptureOne, & similar ones.

As it is, that photo looks pretty neat with the grain. Do you have a RAW file for that image? RawTherapee is mainly used to process RAW files. If you only have a jpeg, GIMP or Photoshop is the way to go.

**brightseal** · 10-04-2016, 07:34 AM

Good reason to start shooting RAW. Thanks!

The Squirrel Mafia · 10-04-2016, 07:42 AM

Yes. I shoot RAW+ on my K-50 to get a jpeg & RAW file at the same time. I'll browse the jpegs on my PC when I get home & only process the images that I really like and/or want to print large. I don't sit there & process every single image. That takes too long.

Well, you can try using GIMP with the GMI'C plugin & try out their noise reduction filters on your jpegs. There are plenty of tutorials online too.

10-03-2016, 11:59 PM	#162
brightseal Site Supporter Join Date: Dec 2015 Photos: Albums Posts: 629	Raw Therapee I guess I should read through this thread but in the meantime I downloaded it. Can I incorporate RT into LR or does it only work separately? I'm a beginner so I'm still figuring things out. Can this pic be salvaged with RT? Last edited by brightseal; 10-04-2016 at 12:06 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Rawtherapee profile for K-50	Zerv	Pentax K-30 & K-50	46	03-28-2016 07:49 AM
Pentax K-50 && RawTherapee 4.1	Schmidt	Pentax DSLR Discussion	17	08-24-2014 02:29 PM
Macro (Thread Two) Some More Macro's From The Weekend	joe.penn	Post Your Photos!	8	09-12-2011 09:16 PM
I started a K-5 Praise thread, now the Complaint thread	imtheguy	Pentax K-5 & K-5 II	46	11-01-2010 09:20 AM
Nature More white-on-whites (so it's the same approach now...:D)	Rense	Post Your Photos!	29	12-11-2009 02:32 PM

09-29-2016, 02:06 PM	#151
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,053 Original Poster	I haven't brought it up on the pixel forum. Then again, Lightroom pictures tend to be more grainier. I guess you give up something for something else. Capture One does an even better job of controlling the "false coloring". I shot the following image with my K-50 a while ago. I processed the DNG in RawTherapee & Lightroom. It's a 100% pixel peep image. You'll get an idea. ISO 12800 RawTherapee: "false coloring" towards the right of EXIT button & just "above" & around the ENTER button. ISO 12800 Lightroom: more grainier & the color is off slightly. Then again, this is ISO 12800 coming from an APS-C camera that produces 12bit RAW files. I guess you can say that it's pretty good. Last edited by The Squirrel Mafia; 09-29-2016 at 05:50 PM.

09-29-2016, 02:52 PM	#152
todd Site Supporter Join Date: Jul 2008 Location: Arizona Photos: Gallery Posts: 6,789	Can't say that I can see it, although at times I think maybe I am seeing something in those spots but it's hard to tell... At times I think maybe I am seeing some super light hazy green or orange, but then at another glance it looks normal. On my second and third monitors (that are a bit darker) I definitely can't see anything... Possible to describe what the false coloring looks like to you in the RT version above? I assume you've went through each filter/tool you're applying turning them on and off and none of them impact that false coloring, right?

09-29-2016, 03:24 PM	#153
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,053 Original Poster	Yeah. I've pretty much exhausted all of my tools & filters. From the NR tools to the demosaicing tools. It could be a byproduct of the demosaicing algorithm & bayer sensor. It could also be the tone curves, contrast, & color curves. The "false coloring" is basically a large faint patch of a greenish, yellowish, reddish, & blueish tint randomly spread across the image. It's especially noticeable in dark & light areas of the image. Instead of those areas being completely dark or light, you'll see patches that are slightly off colored with the above tints. The images below show it better. ISO 12800 RawTherapee: the dark area towards the right should be dark, not "greenish". It's a black table with a semi-"white marble" finish. ISO 12800 RawTherapee: grainy & more white speckled. But yeah, this starts happening as the ISO climbs. Most of the current Pentax APS-C cameras (K-5 on forward) look to be good up to ISO 6400 & then the "false coloring" starts to come in.

09-29-2016, 03:47 PM	#154
todd Site Supporter Join Date: Jul 2008 Location: Arizona Photos: Gallery Posts: 6,789	Ok.. Definitely see it in these examples and see that at times in my images too and have just always called it "noise" haha... Time to post this on the pixel forum!

09-29-2016, 06:10 PM	#155
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,053 Original Poster	Feel free to post it if you want to. One thing that I've noticed is that the K-70 has much better false coloring control. What you see at ISO 12800 on the other APS-C Pentax models is what you roughly get at ISO 25600 on the K-70. The K-1 is obviously better. The future looks good for Pentax.

09-29-2016, 06:22 PM	#156
brightseal Site Supporter Join Date: Dec 2015 Photos: Albums Posts: 629	Originally posted by The Squirrel Mafia The future looks good for Pentax. So basically in a couple years the K3 is going to be trash?

09-29-2016, 08:11 PM	#157
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,053 Original Poster	^ No. The K-3 is gonna be good for at least another 6 years at the minimum. Same thing with the current batch of Pentax APS-C cameras. Sensors are advancing, but not by leaps & bounds yet. My guess is that you'll really start to notice the difference by the year 2025.

09-29-2016, 08:26 PM	#158
brightseal Site Supporter Join Date: Dec 2015 Photos: Albums Posts: 629	Originally posted by The Squirrel Mafia The K-3 is gonna be good for at least another 6 years at the minimum On the one hand that's great but on the other, 100,000 actuations doesn't seem like it will actually last that long....

09-30-2016, 08:19 AM - 1 Like	#159
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,053 Original Poster	^ That should be good for a long while. It depends on what you shoot & how you shoot. Lots of FPS action? Yeah. Might not last that long. Random single pictures? Gonna last a lot longer. If I recall, the K-3II is even good for 200,000 actuations. That's like an eternity!

09-30-2016, 08:47 AM	#160
brightseal Site Supporter Join Date: Dec 2015 Photos: Albums Posts: 629	Originally posted by The Squirrel Mafia Lots of FPS action? what is FPS?

Thread Tools	Search this Thread
	Search this Thread: Advanced Search

09-30-2016, 08:51 AM	#161
Fat Albert Veteran Member Join Date: Jul 2013 Posts: 966	Originally posted by donlass what is FPS? Frames per second.

10-04-2016, 07:31 AM	#163
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,053 Original Poster	^ This is a completely independent program. It's basically a "competitor" to Lightroom like DXO, CaptureOne, & similar ones. As it is, that photo looks pretty neat with the grain. Do you have a RAW file for that image? RawTherapee is mainly used to process RAW files. If you only have a jpeg, GIMP or Photoshop is the way to go.

10-04-2016, 07:34 AM	#164
brightseal Site Supporter Join Date: Dec 2015 Photos: Albums Posts: 629	Good reason to start shooting RAW. Thanks!

10-04-2016, 07:42 AM	#165
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,053 Original Poster	Yes. I shoot RAW+ on my K-50 to get a jpeg & RAW file at the same time. I'll browse the jpegs on my PC when I get home & only process the images that I really like and/or want to print large. I don't sit there & process every single image. That takes too long. Well, you can try using GIMP with the GMI'C plugin & try out their noise reduction filters on your jpegs. There are plenty of tutorials online too.