Author Topic: LRGB Combination results in "blown out" results  (Read 5002 times)

Offline EorEquis

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LRGB Combination results in "blown out" results
« on: 2013 September 30 11:14:29 »
I'm completely at a loss here.  This problem just started 2 nights ago, trying to work through a quick process on a friend's data.

The short description of the problem is this : Whenever I combine a processed L frame to a processed RGB frame, using LRGBCombination (L frame checked and selected, all others deselected) I get a result that more or less resembles this example, the result of processing Jim Misti's M27 data:



Very "blown out"...a "white haze" over everything.

This happens regardless of the data set I use, regardless of its source, and even using the most simplified workflow I can come up with.

The very frustrating and confusing thing is that this JUST STARTED.  Approximately two weeks ago, I processed my IC 1805 data found at the bottom of this page.  The end result was as you see it on that page.

Since Saturday evening, processing the exact same data leaves me with the result on the left of this image.



Now here's the TRULY confusing thing:

In an effort to help me try to identify what could be happening, Josh Lake posted a video of him processing that exact same data.  The image you see above is the result of me following his process step by step, right down to even manually typing in the Dynamic Crop values.  My process was identical to Josh's in every way.



Again, this is happening with EVERY data set.  Following the obsolete LRGB tutorial on Jim Misti's Sunflower Galaxy data gets me...



And so on.

It seems to me there must be some...setting?  value?  tweak?  somewhere that has changed, but I've not changed anything in PI that I know of.

Any help would be appreciated.
« Last Edit: 2013 September 30 15:38:44 by EorEquis »

Offline pfile

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Re: LRGB Combination results in "blown out" results
« Reply #1 on: 2013 September 30 12:04:33 »
dumb question but is there an STF active on any of your views?

Offline EorEquis

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Re: LRGB Combination results in "blown out" results
« Reply #2 on: 2013 September 30 12:09:59 »
Nope.

It sure does look that way though, doesn't it?

But no...I've been extra doubly 100% absosmurfly certain, no STF or autostretch or anything.

Offline EorEquis

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Re: LRGB Combination results in "blown out" results
« Reply #3 on: 2013 September 30 13:55:14 »
Bit of an update...

Just installed PI on another laptop, and ran the same data via the same process...came out perfect, just like I'd expect, just like Josh's version.

So, clearly, it's some setting somewhere in my "live" installation of PI...now to just find the sucker, short of having to hit the "Reset all settings" option.

Offline pfile

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Re: LRGB Combination results in "blown out" results
« Reply #4 on: 2013 September 30 14:05:32 »
very weird. just make sure that when you change something in "Global Settings" to apply the change by hitting the "apply global" button at the bottom of the window (the circular icon)...

rob

Offline EorEquis

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Re: LRGB Combination results in "blown out" results
« Reply #5 on: 2013 September 30 14:20:28 »
I just went through every option of every menu item...and can't find a THING that looks even vaguely applicable.

At this point, I'm at a total loss, and more than a little frustrated.   :yell:  Guess I'll be blowing it up and starting over here soonish...

Offline cfranks

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Re: LRGB Combination results in "blown out" results
« Reply #6 on: 2013 September 30 15:17:20 »
I had a similar problem.  Integrating R, G and B subs for a current project (NGC6729) and only using the Apply STF toolbar button, the resulting R & G are fine but the B is 'blown out'.  The individual subs are all virtually identical.  Cropping them to get rid of the small black borders and the STF's now behave!  I haven't followed it further since it was a 'one off' and most of these weird  results are most likely my fault anyway!!   :-\

Charles

Offline EorEquis

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Re: LRGB Combination results in "blown out" results
« Reply #7 on: 2013 September 30 15:30:18 »
Thanks for the input, Charles.

Unfortunately, doesn't appear to be the issue here.  Especially since the same data processes fine on 2 other installations, using identical steps.     ???


Offline Josh Lake

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Re: LRGB Combination results in "blown out" results
« Reply #8 on: 2013 September 30 15:47:52 »
Sounds like a reset is in order, unfortunately. But how different do you make from the default install? I think I just change one or two settings.

Sorry, man!

Offline EorEquis

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Re: LRGB Combination results in "blown out" results
« Reply #9 on: 2013 September 30 16:30:54 »
A reset did indeed fix the problem.  Wish I had a clue what caused it though    ??? ...sure would like to avoid this in the future!

Thankfully, I don't change too many things either.  Biggest concern was the favorites list, but that was saved and then reloaded after the reset...the rest is just a turning off some explorer windows or moving them elsewhere.

In any event, here's the result from a quick runthrough now after the reset...



So, huzzah!

Can't thank you enough for the help, Josh!

pfile and Charles, thanks a million to you guys too for at least jumping in to bat some ideas around.  8)

Offline Josh Lake

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Re: LRGB Combination results in "blown out" results
« Reply #10 on: 2013 September 30 19:27:44 »
Back in action, congrats!

Offline EorEquis

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Re: LRGB Combination results in "blown out" results
« Reply #11 on: 2013 October 01 03:36:52 »
Something interesting I noted last night...

I saved a 32bit TIF in PI, and opened it in PS CS2 (forgetting, of course, CS2 wouldn't be happy) and it opened the image with a very familiar "blown out" look.

Hrmmm....wonder if this could have been a bit depth issue somewhere/somehow?

*shrug*