on 15/12/02 9:20 pm, Tim Wheeler wrote: > I had always assumed that perspective correction in Photoshop is the > same as correcting the verticals in a view camera, but I can't remember > any 5x4 product shots looking as dumpy as the digital version. >
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. This effect happens with everything. In Photoshop, what is called perspective in the transform menue is in reality just a crop. 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. This is easier than trying to use the perspective tool in the transform menu. But you still need to strech the image. My full workflow is. 1 Correct the perspective using the crop tool. 2 Image canvas sise> here I add approx 100% to the canvas in the direction I need to strach the image. 3 Select all> Transform> Scale. It is then a matter of judgement in how much you strech the image, but it is often far more than you think> Hope this helps Ian -- Ian Goodrick, Tel/Fax +44 (0) 1474 333066 Ian Goodrick Photography, Mobile 07860 362322 Gravesend, Kent, UK =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
