Is it possible in PHCS4 to increase the grid when you select an object to warp using the Transform>Warp
(I am currently working on an image which is CMYK). I would only like to warp a small part of an object to get my desired effect.
Unfortuantely you cannot get more grid points. CS5 has puppet warp.
Try using filter >> liquify with a low number for brush pressure and density
You can also draw a small rectangular marquee in the general area you wish to warp, so the warp points are closer to what you need to modify. When do this though, try not to adjust the edge points too much. Otherwise you'll get a "cut" in the image.
I do wish we can add warp points like the gradient mesh tool in illustrator too.
Liquidfy also works, but I find that warping usually results in better pixel integrity. With liquify, the adjusted areas sometimes seemed blurred.
Actually I consider embedding the image in Illustrator, Envelope Distorting it there and placing it as a Smart Object in Photoshop as a viable alternative.
I usually select a small area and copy/paste into a new layer and do the warp there. It gives finer control and I can retouch the unwarped part underneath to help blend the two. When I'm done, I merge the floating layer back down.
But, I feel the pain. I'd like to have more points, or be able to select which quadrants of the warp mesh that I want to move. I'd like to be able to select several points of the mesh and move them in concert.
What you can do is, select the area with a simple rectangle, apply warp, do the necessary changes without altering the edge points or lines, apply changes. Then select other part with a new selection, repeat the process ....