Re: best file type for viewing picture on web or computer monitor
Are you just asking for the best format for uploading to a web site for viewing? or is the question meant to cover the storage on you PC for modifications?
These are two totally different questions.
For Web Content JPEG, or PNG are fine
For saving work on your own PC you should consider either PSD if using Adobe or TIFF so that you get no loss of detail in the photos and then convert for WEB once finished post processing. As part of the conversion I normally drop the dpi to 100 and size dependant on what your users require and sharpen at this point. Most of my files are stored unsharpened until ready for either conversion to web or printing.
Roger
"I hope we will never see the day when photo shops sell little schema grills to clamp onto our viewfinders; and the Golden Rule will never be found etched on our ground glass."from The mind's eye by Henri Cartier-Bresson
My Web Site: www.readingr.com DSLR
Canon 5D; EF100-400 F4.5-5.6L IS USM; EF24-70 F2.8L USM 50mm F1.8 II; EF 100 F2.8 Macro Digital
Canon Powershot Pro 1; Canon Ixus 100