Thanks Zam

. My courses throughout school all but demanded Mac usage, so I've slowly transferred over, and will agree that for creative work, they're just superb. Still trying to re-learn all the keyboard shortcuts I rely on here on the PC, and there are some slight differences between the two OS's when it comes to things I do regularly, but on the whole, I agree completely!
ISO.7.studios wrote up a very handy mini-review on the differences between LR, PS, and to a lesser extent, Illustrator,
in this thread at the other 'Planet. It applies just as much to GT as it does for Forza (and any other game images, really), so do not be scared by where it is

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GIMP can do some excellent things - so can Paint.net, as Gtuned has shown. It's similar to real life photography in that sense; a great photographer can produce fantastic shots with a simple point and shoot, while an amateur could waste the inherent abilities in a DSLR they're handed. Photo-editing, much like the act of shooting the images themselves, relies on the user more than the abilities the program is capable of, because if you can't utilize it effectively, it's all for nought. I've seen too many awful "Find Edges + Lens Flare" images in my days
If user-friendliness is a concern, I do highly recommend starting with Lightroom. It's user interface is much easier to run through, and alterations are made in a much more straight-forward sense; you "see" what you're changing more directly than the sometimes obtuse options and settings in Photoshop. The main benefit of Photoshop, for me, are the layers: as you'll read in that post I've linked above, PS is a great jack-of-all-trades that has a strength in multi-disciplinary files - the Competition banners, or my gallery layouts - while Lightroom is a very focused tool, a scalpel for strictly editing images, similar to, you guessed it, a lightroom during the old film days

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NINJA-EDIT: These are posted from my phone - just got in from work, so polls will hopefully be up in a few hours, though I only have the PMC Top 25 PM in my inbox, and neither new theme for Weeks 74 yet!