Photoshop Pixel Accuracy

Just want to see if I have something incorrectly set in my Photoshop CS4.

This has always been a problem, but if I draw a box and try to set it to exactly 320 X 180, it adjusts to something like… 320.6 X 180. If I get it to hold at 320 X 180 the edges aren’t crisp.

Is this just the way it is or is there a way to draw a box by any dimension you need & have crisp around the edges?

Thanks -

Possibly a video card driver issue? Does it seem to only occur in PS CS4?

I’ve looked through the Adobe forums and most of the similar issues I’ve come across seem to be driver related to zoom level. But it doesn’t seem consistent across all installs, seems to be more hardware and OS combos.

The forums are well populated with issues, you could try over there: Adobe Photoshop Forum

I’ve had this problem before but I always thought it was a bug or something.

I’ve had a little play and I wonder which mode you are using for shapes. In the pic below I note that the “Fill Pixels” does exactly what you are suggesting and aliases the edge of a shape. I wonder do you get the same result if using the Shape Layer or Paths option?

Hmmm okay you got me there, was away from my work station to actually try it. Interestingly it won’t let me specify points of a pixel in the dimensions when making a new doc but I can do it inside that document. Weird.

Anyways, I’m still interested in how you measured the inaccuracy in the first place, guides? Info palette?

The fuziness can be caused by feather settings on the box, or possibly the zoom level you are viewing it at in PS. Some zoom levels can cause weirdness when viewing.

What measurement units are you using?

Pixels…

I don’t think that PS can measure in 0.6 of a pixel.

Enter the exact dimensions (regardless of default measurement unit) and then draw. PS will limit the box to the dimensions specified.

Will try that I guess, thx–

I use the shape tool quite a bit… so if I select rectangle & draw the shape to the right dimensions it still doesn’t lock to that crisp state I’m looking for. Doesn’t matter if I use guides or not, same thing happens…

I’m sure if I used the marquee tool & then filled in the area via paint bucket it would be crisp… but then I wouldn’t have the same flexibility when resizing the box.

What measurement units are you using? Are these set as the default measurement units in the preferences? I don’t think that PS can measure in 0.6 of a pixel. There may be some slight measurement inaccuracy if there is a conversion happening.

You can always set the exact dimensions in the info bar at the top of the screen after you select the box tool but before you draw it. You may need to switch the drop down box in the tool bar to “fixed size” first (going by memory). Enter the exact dimensions (regardless of default measurement unit) and then draw. PS will limit the box to the dimensions specified.

Possibly a video card driver issue? Does it seem to only occur in PS CS4?

Nope this has always been the case. The graphics card should be an issue because not everything is blurry…

Things are getting especially frustrating now as I’m trying to import a logo in AI (which can be zoomed a million times crispy) and when I bring it into Photoshop it’s a blurry fool.

Slackr thanks for the suggestion but that doesn’t work for me either.

I mean this is the top of the line in 2010. Not saying that it is not my computer but logic would suggest otherwise based on what I’m seeing.

If I understand the issue is primarily with Photoshop’s rendering of vector information whether that originates internally (using the path tool) or externally (importing an AI file).

It does sound like some weirdness is going on, I would be inclined to post in the Adobe forums if you haven’t already as there are Adobe techs and the advice is much more specific than you’ll find over here (unless someone has struck gold and solved the same problem).

Do let us know if you solve the issue and what you did to rectify the situation.

Good luck.