Jagged edges on drumscan

[erikhatt]

In the picture i attach, you can see a crop. Look at the jagged strange way the pixels ends up along the edge of a face. This is all over the picture. Drumscanned on a ICG365 2600DPI.

Any idea whats going on?

 

[erikhatt]

the picture

the picture

 

[Bruce Watson]

In the picture i attach, you can see a crop. Look at the jagged strange way the pixels ends up along the edge of a face. This is all over the picture. Drumscanned on a ICG365 2600DPI.

Any idea whats going on?

You are using a very high magnification which makes it very difficult to evaluate. I'm not surprised at anything in a scan file when looking at it at 600%. You should see some blurring at the high contrast boundary, and a "boundary layer" of tonal transition.

The curious thing to me is the pattern. That kind of obvious pattern should not occur, even at the 600% level. IOW, I don't see any kind of pattern in my scans from an Optronics ColorGetter 3 Pro drum scanner. Just a guess, but looks like a software problem to me -- the pattern is too large to be hardware or firmware. What does ICG have to say about it?

 

[L Gebhardt]

I have seen this on two of my scanners (D4000 and Scanmate 5000). In my case it was related to the not so sturdy table I had them on. I suspect it was vibration related. Seems to be gone now since I switched tables.

 

[Bruce Watson]

I have seen this on two of my scanners (D4000 and Scanmate 5000). In my case it was related to the not so sturdy table I had them on. I suspect it was vibration related. Seems to be gone now since I switched tables.

Oh, interesting thought. That could do it -- a nice set of overlapping natural frequency vibrations could look like that maybe.

 

[Bob Carnie]

Vibration while scanning was a problem for us and we solved it with a much more robust table and anything that could hum or vibrate off that table.

Oh, interesting thought. That could do it -- a nice set of overlapping natural frequency vibrations could look like that maybe.