New PROBLEM: Photoshop 90 Degrees Canvas Rotation No Longer Accurate

[Itsa Little CrOoked]

I'm pretty disgusted with this new discovery.

I rotated the canvas 90° ClockWise (to print some films on my 1400 wider than 12.5") and after I did, I noticed some of the elements no longer appear to be "puzzle pieced" back in perfectly.

I am completely bewildered by this new behavior, and it appears to have happened twice now, but on the same file.

Has anyone else experienced this problem???

Stan



Some background if you need extra info to help respond:
I am operating on CS2 and from a Windows 7 Ult 64 platform. The bulk of my art for many years was with Signlab, which is a vector based program. We were vinyl cutters and built our own electric signage. I've reoriented my artwork to mostly raster based, because it's just easier than learning Illy. (Signlab is simple, Illy is decidedly UN-friendly to this Olde Pharte. I can get around a little in Photoshop.)

For several years, I had Photoshop's CS2 Anti-Alias turned on by default for pdf imports. I now no longer do that.

The above scenario is 600 dpi spot color job, with butt registered, hard edges. It DOES have some approximately 30% halftones. I work mostly in LAYERS since I do a lot of simple spot color seps.

AFTER rotating, two of the layers were jogged out of register just slightly. (HUH!!!!? WHAT THE HECK!?) It seems like the "move" tool fixes the problem with UNIFORMLY 2 (two) clicks of the down arrow...TWO CLICKS. No more, no less. But I'm not doing that! I considered a system re-boot, but didn't do it.

I used to do only 300 dpi work, and since turning off Anti-Alias I often import pdf's at 600. (I disliked the sawtooth effect.)

This is the only variable I can identify as a possible reason I'm getting the rotation problem NOW, when I never have before. That's about all I can think of.

[Sbrem]

That's a good one indeed. I don't the resolution changing to 600 should make that happen, as the dimensions of height and width should just alternate with each other when rotated... can't help with Windows though, I'm a Mac guy

Steve

[Itsa Little CrOoked]

Thanks for responding at least, Steve.

I should have mentioned, I didn't choke or spread anything on this art. It is a pure butt register job, 4 spot colors, 3 of which have some halftoning.

I wonder if I'd have switched over to 300 DPI, if I'd have even noticed the problem.

I'm a little behind, so I am going to shoot this job and print a strike off or two tonight even though we are closed. We shall soon see if the reggie targets are usable or if the shift is enough to matter.

[Sbrem]

It really shouldn't change anything; I mean, I'm the same height and width whether I'm standing or laying down, the numbers are just reversed around in the H and W boxes... elements of the art shouldn't go out of line, that's pretty strange. We output our Photoshop stuff from Illustrator, always have. Out of curiosity, have any other files done that, or if you rotated a set of seps in a vector program, do they get whacky too?

Steve

[Itsa Little CrOoked]

I don't know how to output from Illustrator, raster art that was worked in Photoshop. But it might provide a solution if this problem reoccurs. I'll look into that.

Anyway Steve, I often rotate to print from Photoshop, but the problem I described above has either gone unnoticed until now, or hasn't happened at all until this file.

I did print the shirts in question. I had to do a lot of tweaking on my 93 Gauntlet to be good enough on registration. It was CLEARLY the worst job to register since I bought it last fall, but I also think the films were pretty whackadoodle. The job shouldn't have been stretch at all. I don't have time to do a postmortem right now, so I am still uncertain whether the rotation problem within Photoshop caused my grief, or the fact that one film printed skewed. (One skewed film has happened to me before, but rarely)  Later, I'll line up the films and see how bad they are out of reg.

My current film printer is an (now aging) Epson 1400, and registration is beginning to suffer.