On 8 Jul 2008, at 10:24, Joseph Ortenzi wrote:
No application can create extra pixels where only one existed. At best, they can interpolate what a pixel _might need to be_ by being very clever about the pixels surroundings and using sophisticated filters and techniques, but it is an educated guess at best. There is no such thing as "enlarging" in Photoshop or any other digital, pixel-based application.
I think we're actually saying the same thing in different ways Joe. Probably I didn't explain myself very well. And I certainly wasn't trying to imply that Photoshop can give you perfect enlargements, but I think we're splitting hairs over the meaning of 'enlargement'. And now it's my turn to take minor issue: if you enlarge an image in Photoshop (eg. Image > Image Size) then in fact Photoshop *does* create new pixels. There's no way around it; if you go from 10 x 10 pixels to 20 x 20 then Photoshop has created 300 new pixels. And the image *is* larger in terms of pixel dimensions. However, what you say is true: the *contents* of those newly created pixels is entirely guesswork on the part of the software, extrapolated from the original data. So the image is degraded.
My point however, was that the less-than-perfect enlargement that you get from Photoshop's interpolation algorithms is still way better than the process of stretching an image in the browser with no interpolation at all.
Sorry, this is drifting OT, so I'll shut up. -- Rick Lecoat www.sharkattack.co.uk ******************************************************************* List Guidelines: http://webstandardsgroup.org/mail/guidelines.cfm Unsubscribe: http://webstandardsgroup.org/join/unsubscribe.cfm Help: [EMAIL PROTECTED] *******************************************************************
