Dear Shangara I recently "corrected" a circular tower which was on the extreme edge of a wide angle Xpan image. Although it isn't the same as getting the subject in the centre of the frame the skew tool does allow one to drop the edge of the elipse, correct the verticals and get the horizon straight all in one go.
Taking away pixels isn't a problem but for adding them the pixel number has to be big enough in the first place so that the final printed image will not show a gradual loss of detail. What one needs to do is decide how big the image will end up, calculate the number of pixels needed and make sure the enlarged (but then interpolated) pixels are still enough. Working with 200% is usually enough. Grid lines are essential. Considering how useful this is I am surprised that Martin Evening devotes so little space to it in his book. It does seem that everyone uses Photoshop in different ways. Bob Croxford In a message dated 12/16/02 9:10:39 AM, shangara writes: << When you use a swing and shift, you're still using the full frame - aren't you? I have used it in film on a promo (music video) for effect but that was years ago so can't remember exactly what happens to the frame. However, if you do it in Photoshop, you have to stretch and squeeze the pixels so the result is bound to be different, I would've thought, since stretching and squeezing will add or take away pixels. >> << 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? >> =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
