The wheel thing allows you to adjust the viewfinder's focus - no ttoally sure why it's there, been on SLRs for decades. Perpahs so you can leave off your eyeglasses?
Your 30D has picture styles (see the manual, they are accessed via the menu) - Standard, Portrait, Neutral, landscape, Faithful and Monochrome as well as 3 custom ones you can create. Each has it's own look, like different films. Each can be tweaked for color saturation, tone and shaprness and contrast. You cannot tweak one so far as to be another. Monochrome is cool - in RAW you can make it color again, but you can add filters like b&w film, tone like sepia and more. Reallly neat. Shoot JPG and you get what you set. Shoot RAW and you can change them later. RAW is cool.
I like sharp piocs. I am shooting in Faithful - i have not tested all variations (this weekend's task) but from what all i've read faithful works best for most applications. Landscape does the most sharpening, portrait the least. Portrait and standard may be a bit red in the skintones. Neutral is a bit flat and bland. I also like a bit more saturation than some folks.
For PS - canon recomends a first pass of USM at 300%, .3 and 0. Depends on the subject matter of course. I often do .4. I then edit and resize, what not. for Web I then often USM 45%, .9 and 1 or sometimes do the 300, .3 and 0 again and fade it. For portraits it sometimes helps to do a threshold of 4 to 6.
left comments on the pics.
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