What settings do you recommend for web and print?
At the moment I do:
Web:
Jpeg
sRGB
Quality 100
Long Edge 2,048 pixels
Resolution 72 PPI
Sharpen for screen amount low
Print:
Jpeg
sRGB
Quality 100
Resolution 300 PPI
Sharpen for matte paper amount standard
A couple of notes.
+1 that 2048 is about 2x to long for the long side. Lots of people still use computer displays that are only 800 pixels wide.
Web: JPEG - yes. sRGB - yes.
Quality - On the web you will see no difference between a Quality of 10 and a Quality of 100. Quality affects the files size. A lower Quality makes the file smaller. A smaller file loads faster and uses up less storage space.
Resolution - On the web, and for electronic display, PPI (Pixels Per Inch) is meaningless because there are no inches, only pixels.
PPI is print resolution and only applies to prints.
Sharpen - How much you can or can't output sharpen for web/electronic display depends on image content and image quality.
Print:
Color Space: Some print labs can print the broader color gamut the Adobe RGB color space has. Even better, labs that have wide gamut inkjet printers can print photos that the even broader color gamut the ProPhoto RGB color space has.
Resolution - The limiting factors for print resolution is print size, image resolution, and image quality.
Image resolution is the pixel dimensions of the photo to be printed.
Print resolution is the PPI. Image resolution
and print resolution (PPI) determine print size.
For example - You have a photo that has image resolution of 3000 x 2000 pixels. At a print resolution of 100 PPI a 3000 x 2000 pixel image will produce a 30" x 20" print. At 200 PPI the same 3000 x 2000 pixel image will become a 15" x 10" print, and at 300 PPI a 10" x 6" print.
Put another way, as prints get larger a point is reached where the PPI has to start decreasing to make the print, and not all images will have sufficient quality to decrease the print resolution.