M
Michael Wasley
I have asked this elsewhere and got no response. I have emailed some
of the companies involved with no clear answer.
If I scan a transparency and then send the scan to be printed by a
web-based lab what do I do about sharpening?
Normally for on screen viewing of an image of about 600 px long side I
find USM is typically around 150%, radius 0.7, TV 3. Obviously it
varies.
But for a 6x4 print from a digital lab the long side is going to be
1200+ px.
How do I judge the result of USM in that case?
1) Work at full size on the screen?
2) Zoom out to 25% or whatever produces an on-screen image about the
size of the print?
3) Produce a trial version that at 100% will be about the right size
on screen (say about 500 px long)?
4) Something else?
Two other questions.
Would people recommend reducing the pic to the dimensions recommended
by the lab for good results (eg 1200 px for 6"), or send the full size
scan, which may be about 1900 px long?
Any thoughts on whether the JPEG being sent should be uncompressed or,
if compression is acceptable, compressed to what extent?
Thanks,
Michael
of the companies involved with no clear answer.
If I scan a transparency and then send the scan to be printed by a
web-based lab what do I do about sharpening?
Normally for on screen viewing of an image of about 600 px long side I
find USM is typically around 150%, radius 0.7, TV 3. Obviously it
varies.
But for a 6x4 print from a digital lab the long side is going to be
1200+ px.
How do I judge the result of USM in that case?
1) Work at full size on the screen?
2) Zoom out to 25% or whatever produces an on-screen image about the
size of the print?
3) Produce a trial version that at 100% will be about the right size
on screen (say about 500 px long)?
4) Something else?
Two other questions.
Would people recommend reducing the pic to the dimensions recommended
by the lab for good results (eg 1200 px for 6"), or send the full size
scan, which may be about 1900 px long?
Any thoughts on whether the JPEG being sent should be uncompressed or,
if compression is acceptable, compressed to what extent?
Thanks,
Michael