WessoJPEG wrote:
You see I don't understand 8 bit 14 bit. Don't have much money to spend on PC or elements, LR. Thanks
Your software is too old (Elements 10, 2011... iPhoto final version, 2013) and your D7200 too new (2015).
You just spent $800 (used) to $1000 (new) on a D7200 (more if you got it in kit with lenses) and you don't have $90 to update to Elements 15 to be able to work with the photos from the camera?
A
free 30-day trial of Elements 15 can be downloaded from the Adobe website... give it a try to be sure it works and, if you like it, then buy a license.
There are other free RAW converters out there, but your own your own figuring them out and finding out if they'll work with your new camera.
Some software allows working on images in 16-bit mode. Simplistically, that provides more selection of colors than 8-bit.
The 168 million shades of color available in 8-bit processing seems a lot... until you compare with the 281 trillion possible colors in 16-bit mode!
When you shoot RAW with your camera it's capturing 14-bit images (16-bit in post-processing is interpolated by the software).
All digital cameras shoot RAW images, period. When you set the camera to JPEG it's actually very rapidly converting the RAW to JPEG according to the settings of the camera (white balance, saturation, contrast, noise reduction, sharpening, etc.). When you set the camera to save JPEG only the camera performs that conversion, then throws away a lot of the originally captured data. If you shoot a RAW + JPEG image then look at the file sizes, you'll see the difference. RAW files are always considerably larger than JPEG. Part of this difference is that the bit depth has been reduced to 8-bits, with the JPEG.
Photoshop Elements is 8-bit limited. It can only
save 8-bit files such as JPEGs. But for the important stuff where it matters (exposure adjustments, changes to color temp & tint), within it's RAW converter Elements is actually working with 14-bit/16-bit files before "downsizing" them to JPEG.
The human eye can discern 10 million colors. So
finished 8-bit files utilizing a palette or nearly 17 million colors are more than adequate for many purposes. In fact, a lot of printers and print services prefer or even require 8-bit JPEGs. Nearly everything done online uses JPEGs or other types of 8-bit or less files. But when working the image.... when changing exposure factors or white balance or some other things, better quality can be achieved in 16-bit mode. Elements
can and does do this! It cannot apply some filters and special effects in 16-bit mode. And it can't save a file as, for example, a 16-bit TIFF or PSD or similar... which might be wanted for some professional and commercial purposes, but aren't really needed by most people. Elements also can work in the relatively standard sRGB color space or in the slightly wider Adobe RGB color space which some photo & graphics quality computer monitors are capable of displaying. Elements cannot work in the CMYK and a few other specialized color spaces that are primarily used for commercial printing and such. (Photoshop and Lightroom have more 16-bit capabilities.)
More about 8-bit versus 16-bit here:
http://www.photoshopessentials.com/essentials/16-bit/