Originally posted by 7samurai When I open PEF files in Acdsee Pro 4, they seem to be darker. Unfortunately, my inexperience is preventing me from getting the image to a state I like. My baseline is the PEF from the Pentax software.
I usually recommend people do a blind test before spending any time tweaking settings. It's practically inevitable that the first version of an image we see is the one we accept as "correct" or "best", and anything else will be seen as not measuring up to that standard. When we do a blind test, using a variety of different types of images, we are usually surprised to find out that we really don't turn out to have consistent preferences - it's normally much more 50/50 than we might think.
In any case, instead of making it your goal to match some arbitrary other program (eg, Pentax's), you should make it your goal to make the *best* image you can. Again, if you do this without consulting any other version, you might also find you end up preferring rather different from what the Pentax software produces.
That said, again, the better you can describe *exactly* what you want, the better the chance of reproducing it. So it certainly makes sense to practice by using the Pentax as a goal and seeing how well you can describe the differences. If it truly is just darker overall, well, then turning up the exposure slider is all you need. But more likely, you are seeing the fact that ACDSee tends to make the dark/midtones darker than Pentax does; the highlights are usually about the same. So instead of turning up exposure - which will brighten highlights just as much as midtones - you might try turning up Fill Light instead, or turning down Contrast, or use the Curves to brighten the specific tonal range you wish to. Or maybe you see the shadows as being too cool, in which case you could use the RGB curves to bring down the blue channel at the shadow end and bring up the red and/or green. Again, if you can put into words what you want to achieve, you can make it happen, but if you can't put it into words, you probably won't be able to get it.
Then, whatever you come up with, save it as a preset, and you can easily apply it to a whole shoot in just a couple of keystrokes, while still leaving open the possibility of further custom tweaking. I have a couple of such presets for my K200D - one I use for outdoor / well lit images, one I use for low light images. The first just turns up fill light a little. The second applies a tungsten-ish WB setting, adds NR, and adjusts the sharpening settings to use a higher threshold so it's not sharpening the noise so much. I've also created presets that use curves to get specific looks.
Oh, also - be sure you aren't using any Pentax-specific JPEG-only artificial DR-enhancing options in your camera like D-range or highlight/shadow compensation. Those work by deliberately underexposing an image then fiddling with curves to get a specific look when converting to JPEG. You'd have to recreate that curve-fiddling yourself in ACDSee if shooting RAW. You could probably come up with something that matched the effect pretty well.
Quote: I've also noticed one anomoly on areas that are over exposed. The Pentax software seems to recover those areas, while in Acdsee Pro 4, they are shown as blown highlights. It's a small issue. I'm wondering if the Pentax software is compensating by using the surrounding pixels.
Could be. Or is doing some "magic" in applying preprocessing curves. In any case, ACDSee can also recover blown highlights, using the Highlight Recovery slider - you just have to do it yourself. Using the Lighting tool in Light EQ or Advanced mode can also help - a lot - here. But this kind of stuff is extremely image-specific; you probably don't really want to make that part of your basic preset, because it might be detrimental on images without blown highlights.
Quote: I also noticed the PEF files in Acdsee Pro 4 shift a few pixels up when viewed vs the jpg.
All cameras capture more pixels that they actually report; different programs will use those extra pixels different ways.