Auto Adjustment on Channel(s)
Under Preference >> Exposure >> Channel,
There are two different default setting, RGB Channel or Red, Green Blue Channels. I have tried both and realize Red Green Blue Channels sometimes results to a better result, bringing the exposure up with sharper color while sometimes it would make the photo looks funky.
Which setting do you use more often? and under what circumstances?
There are two different default setting, RGB Channel or Red, Green Blue Channels. I have tried both and realize Red Green Blue Channels sometimes results to a better result, bringing the exposure up with sharper color while sometimes it would make the photo looks funky.
Which setting do you use more often? and under what circumstances?
0
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The Separate channels - always.
Sometime, quite rarely and usually on challenging images where the WB may be off but not easily spotted, the result can be "unusual". But mostly the separate channels is a clear winner. I never use the RGB option.
This was covered in, iirc, one of the blog posts some time back and when I read the suggestion and tried it the benefits seemed very clear - especially when starting with Linear profile for the RAW file.
Of course your experiences may be different depending on hardware and what you are intending to achieve with the inmage.
HTH.
Grant0 -
For auto-adjust, channels. But sometimes that doesn't give me what I want, and I manually adjust RGB. In rare cases (where I want to batch auto-apply RGB) I'll switch it over and bulk apply to a whack of images from a session, but that's pretty rare. 0 -
SFA wrote:
The Separate channels - always.
Sometime, quite rarely and usually on challenging images where the WB may be off but not easily spotted, the result can be "unusual". But mostly the separate channels is a clear winner. I never use the RGB option.
This was covered in, iirc, one of the blog posts some time back and when I read the suggestion and tried it the benefits seemed very clear - especially when starting with Linear profile for the RAW file.
Of course your experiences may be different depending on hardware and what you are intending to achieve with the inmage.
HTH.
Grant
Yes. Red Green Blue channel separate definitely brings out clarity and removed some of the cloudy or grey-ish color on images0 -
Robby-D wrote:
For auto-adjust, channels. But sometimes that doesn't give me what I want, and I manually adjust RGB. In rare cases (where I want to batch auto-apply RGB) I'll switch it over and bulk apply to a whack of images from a session, but that's pretty rare.
How should I start with manually adjust RGB? I tried a little bit, I don't quite get the dynamics. I often get images tilted to either Red, green or blue.0 -
NNN636400484558385760 wrote:
Robby-D wrote:
For auto-adjust, channels. But sometimes that doesn't give me what I want, and I manually adjust RGB. In rare cases (where I want to batch auto-apply RGB) I'll switch it over and bulk apply to a whack of images from a session, but that's pretty rare.
How should I start with manually adjust RGB? I tried a little bit, I don't quite get the dynamics. I often get images tilted to either Red, green or blue.
If you want to manually adjust rather than auto adjust
(1) start by making sure all the levels controls are reset - hit the reset button on that tool.
(2) If you want to manually adjust RGB (all channels) pull in the sliders at bottom left and bottom right, and perhaps move the middle slider left (lighter mid-tones) or right (darker) until you like the result. You should not find that much of a colour cast results.
(3) If you prefer, you could adjust R, G and B separately. Go to each of the R, G and B channels in the levels tool in turn and adjust the sliders as you like. BUT as you adjust one channel it WILL result in a colour cast - don't judge it until you have adjusted all three. For instance you could pull the sliders on each colour channel in separately to the edges of their respective histograms.
I generally find that I prefer the result using RGB. I often use the auto adjust by hitting the A button on the Levels tool, and then perhaps tweaking the sliders from that as a starting point. (For example, in an image that is inherently fairly low contrast, the A button can considerably overdo it, and then I would pull the sliders back out a bit until I got a more natural looking result.)
But if the image has something of a colour cast (perhaps because distant hills look rather too blue) it can create a better looking result to set R, G and B levels separately, either using the A button, or manually. But I usually only do that if I think the picture needs it.
Ian0 -
Ian3 wrote:
NNN636400484558385760 wrote:
Robby-D wrote:
For auto-adjust, channels. But sometimes that doesn't give me what I want, and I manually adjust RGB. In rare cases (where I want to batch auto-apply RGB) I'll switch it over and bulk apply to a whack of images from a session, but that's pretty rare.
How should I start with manually adjust RGB? I tried a little bit, I don't quite get the dynamics. I often get images tilted to either Red, green or blue.
If you want to manually adjust rather than auto adjust
(1) start by making sure all the levels controls are reset - hit the reset button on that tool.
(2) If you want to manually adjust RGB (all channels) pull in the sliders at bottom left and bottom right, and perhaps move the middle slider left (lighter mid-tones) or right (darker) until you like the result. You should not find that much of a colour cast results.
(3) If you prefer, you could adjust R, G and B separately. Go to each of the R, G and B channels in the levels tool in turn and adjust the sliders as you like. BUT as you adjust one channel it WILL result in a colour cast - don't judge it until you have adjusted all three. For instance you could pull the sliders on each colour channel in separately to the edges of their respective histograms.
I generally find that I prefer the result using RGB. I often use the auto adjust by hitting the A button on the Levels tool, and then perhaps tweaking the sliders from that as a starting point. (For example, in an image that is inherently fairly low contrast, the A button can considerably overdo it, and then I would pull the sliders back out a bit until I got a more natural looking result.)
But if the image has something of a colour cast (perhaps because distant hills look rather too blue) it can create a better looking result to set R, G and B levels separately, either using the A button, or manually. But I usually only do that if I think the picture needs it.
Ian
Thank you very much! I believe Auto is a good point to start with.0
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