It was 16/12/02 7:39 am when Ian Goodrick wrote: > The 'perspective correction' in Photoshop is just another area where the > program takes a photograpic term and bends it to a slightly different usage. > > In view cameras there is a streaching of an object as it gets nearer the > edge of the frame. This can be seen if you look at a circular object near > the edge of a wide angle shot. It becomes an elipse.
Ian, aren't elipsing and perspective distortion different phenomena? One caused by the design of the lens while the other is caused by the angle of the light hitting the film/sensor? > In Photoshop, what is called perspective in the transform menue is in > reality just a crop. Ummm...not so sure about that. <G> As I understand it, a crop cuts up an image but perspective distorts it. If anything, Adobe have confused the terminology by giving the crop tool the option of not only correcting perspective but also resizing the image. Imagine being able to put your image on a cutting board and being able to stretch it and also make it appear bigger! Can't be done - can it? > The same effect is produced by using the crop tool, and > selecting an area of the picture. Then with the perspective tick box checked > on the task bar you can move the corners of the frame as you want. See above...you're not cropping any more but distorting your image to look the way you want it to. You get the impression that you're un-distorting but in fact you're doing the exact opposite. > This is easier than trying to use the perspective tool in the transform > menu. I agree. > But you still need to strech the image. To make an omelette...<G> --/ Shangara Singh http://www.e-pixel.co.uk Adobe Certified Expert ~ Photoshop 7.0 PortfoliosOnCD for Photographers http://www.portfoliosoncd.com =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
