S
SK
Can someone please tell me how I can specify a print size and output
dpi in vuescan - i.e I want an 8x12 print at 240dpi.
Thanks,
sk
dpi in vuescan - i.e I want an 8x12 print at 240dpi.
Thanks,
sk
N
Neil Gould
Caveat: I'm on my second day of using Vuescan, and this is from memory.Recently said:
Expand your options in both the Input and Output.
Input: Select "Custom" scan resolution, and type in 240 (I think there's a
default at 250 dpi, if a preset will do).
Output: Select "Page size" (may be print size), and select 8x12.
Hope this helps.
Neil
S
SofaKing
First things first. Are you scanning a photo or a negative?
S
SK
SofaKing said:
I'm scanning a negative. When I goto the Output tab, I can specify a
custom dpi OR an output size. This is unlike the Nikon 4 software
where I can specify a dpi AND an output size.
To complicate things, for me, the Vuescan help when describing the
Input qualty on the Input tab says
'Note that this does not define the resolution (dpi) of the output
file, as that also depends on the "Output|Printed size" setting'
Which to me implies one of the fixed factors when scanning is file
size.
Regards,
SK
S
SofaKing
OK just so you know a 24mmX36mm negative doesn't scale to EXACTLY 8"X12".
Are you wanting exactly 8X12 (requires cropping) or do you want an 8X
enlargement of the negative which is pretty close to 8X12. You're probably
looking at around 2032 DPI on the scan of a 35mm neg (24mmX36mm) at 240
printed DPI for something near 8X12. Convert your mm to inches by using a
factor of 25.4 mm per inch.
Are you wanting exactly 8X12 (requires cropping) or do you want an 8X
enlargement of the negative which is pretty close to 8X12. You're probably
looking at around 2032 DPI on the scan of a 35mm neg (24mmX36mm) at 240
printed DPI for something near 8X12. Convert your mm to inches by using a
factor of 25.4 mm per inch.
M
Mac McDougald
Well, it scales to 7.999 x 12.
I guess this isn't EXACTLY, but seems close enough to me!
S
SofaKing
You're right close enough. But film is measured in mm not inches. You end up
with a 203.2mm X 304.8mm frame which is still an aspect ratio of 1:1.5.When
you scale up sometimes working with an 8 times enlargement works better than
8.4666... times enlargement.
with a 203.2mm X 304.8mm frame which is still an aspect ratio of 1:1.5.When
you scale up sometimes working with an 8 times enlargement works better than
8.4666... times enlargement.
S
SK
Ok, I think things are going a little of track here. My initial
query, re-written, was : Why cant I specify an output dpi AND print
size when scanning a 35mm neg.
It seems to me that Vuescan is obsessed with the file size as
determined by Input|Scan Quality. Once this is specified, the ouput
file size is FIXED. Therefore one can only change either the output
dpi OR the print size.
Some examples.
1. Set Scan Quality = WEB, Output Print Size = 10x8 results in dpi =
117dpi, filesize = 2.98MB.
2. Change about output print size to 4x6 results in dpi = 213dpi,
filesize = 2.98MB
3. If I now change the Scan Quality to PRINT, the dpi changes to 425
and filesize goes up to 11.9MB. Print Size is still 4x6.
4. Change output size to 8x12,filesize stays at 11.9MB but dpi goes
down to 213.
Anyone wishing to offer an explanation?
Regards,
sk
query, re-written, was : Why cant I specify an output dpi AND print
size when scanning a 35mm neg.
It seems to me that Vuescan is obsessed with the file size as
determined by Input|Scan Quality. Once this is specified, the ouput
file size is FIXED. Therefore one can only change either the output
dpi OR the print size.
Some examples.
1. Set Scan Quality = WEB, Output Print Size = 10x8 results in dpi =
117dpi, filesize = 2.98MB.
2. Change about output print size to 4x6 results in dpi = 213dpi,
filesize = 2.98MB
3. If I now change the Scan Quality to PRINT, the dpi changes to 425
and filesize goes up to 11.9MB. Print Size is still 4x6.
4. Change output size to 8x12,filesize stays at 11.9MB but dpi goes
down to 213.
Anyone wishing to offer an explanation?
Regards,
sk
N
Neil Gould
Caveat: this refers to the "Pro" version of VueScan. I suspect that youRecently said:
have some "default" settings in the specifications for Input and Output.
1. Since you have options for "Scan Quality" (e.g. WEB, PRINT, etc.), you
are not using a specified dpi. By choosing one of the dpi options or
"Custom", the option for "Scan Quality" is unavailable, and you get either
a set dpi or a window and slider to set the desired dpi for the scan.
[Example, I have mine set for "custom", with the slider set to the max,
but you can type a number into the box, as well]
2. What is your setting for "Printed Size" on the output page? If you
select a fixed size, for instance a print size, then dpi will vary. If you
select "Fixed dpi", then print size will vary.
In other words, this works intuitively, according to the choices made.
Hope this helps!
Neil
M
Markus Plail
I don't really know where the problem is. Changing quality you change
the input dpi/ppi relative to the input size, i.e. 35mm neg.
The dpi you see at the bottom is relative to the output size. You have a
fixed amount of pixels you get from the scanner. The larger you blow
this pixels up, the less dpi you get.
If you set output to "scan size" you see the actual dpi/ppi you are
scanning with.
regards
Markus
C
Chris Thomas
SK said:
I don't think Vuescan will do what you want. Vuescan is not really a
robust printing program. From the manual:
"Printed size
Use this option to select the target size of the saved images. This is
used to compute the resolution of the saved TIFF and JPEG files. The dpi
of the saved files will depend on the dpi produced by the scanner and the
image size. Note that "Printed size" does not affect the number of pixels
in the image, so this setting does not affect the file size. "Image
size" controls logically how far apart the pixels should be displayed in
order to fit in the bounds specified. This also means that "Printed
size" does not cause VueScan to resample the image."
Exactly so. Changing the settings on the output tab does not change the
file size of the image at all (except for the 'tiff file reduction'
option).
Changing the scan quality from Web to Print, or manually setting a scan
resolution will change the file size, but you will still be working with
the new fixed file size on the output tab. The only way to get close to
what you want, is to do the math, then change the scan resolution
manually to what you need.
I think Vuescan's printing options are meant to be quick and simple,
saving you the step of running a second printing program for basic
printing/copying. For high quality printing, I'd recommend a program like
Qimage.
S
SK
Markus Plail said:
There is clearly something I am missing regarding the equation
relating the scanners resolving power(pixels) to an output dpi. So its
back to the class room for me
E
Ed Hamrick
SK said:
1) Set "Input|More options" to "All"
2) Set "Input|Scan resolution" to the dpi you want to scan
3) Set "Output|Printed size" to the printed size you want
Imagine you scan a negative (1 inch x 1.5 inches) at 1000 dpi.
This will result in an image with 1000 x 1500 pixels.
If you want to print this image at 10 inches x 15 inches, you'd
need to put 100 dpi in the file header. If you want to print this
image at 5 inches x 7.5 inches, you'd need to put 200 dpi in the
file header.
This is what the "Output|Printed size" option does - it calculates
the dpi to put into the file header, and this has nothing to do with
the dpi used to scan the image (1000 dpi in this example).
Regards,
Ed Hamrick