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aldog
11-05-2005, 04:38 PM
My mom's scanning a bunch of pictures to put on a slideshow for a friend at work.
It's gonna be viewed on a plasma tv...not sure what size, but I'm guessing big.

What would be the correct resolution/dpi to scan these in as?
I'm getting confused when looking for the answer, can't think...

scrimski
11-05-2005, 05:53 PM
I'm sure it is a 72 dpi resolution, I'm not so sure about the size, look in the manual(of the TV), should be NTSC since you are in Salt Lake City.
The screen size doesn't matter btw.

berniebernie
11-05-2005, 10:06 PM
the software that will display the slides will most likely take any format and resize it accordingly.

mangolass
11-05-2005, 11:14 PM
It's the number of pixels you scan, not the DPI, that really matters. Adjust the DPI when you scan so you get a detailed picture. If you get images that are a 1000 to 2000 pixels across, you're safe. If the picture you scan from is very small, you may need a high DPI to get that many pixels. You always want to scan a little extra, because you might want to crop or rotate a little in Photoshop after you scan.

Regular TV sets have resolutions of 640x480 or 720x486. If it is a big HDTV it might be 1280x720 or at best 1920x1080. TVs don't use DPI.

If some of your pictures are vertical, you might have to think about how to show them on a wide~screen TV. Do you want black on the left and right? Two pictures next to each~other? Maybe can you scroll from the top to bottom?

LT

halo
11-06-2005, 07:50 PM
for images displayed as a TV signal, then you need to know the format of the signal

for images that are displayed directly just using the TV as a monitor, then you need to know the resolution that the monitor will be set to.

aldog
11-07-2005, 02:34 AM
thanks for all your (confusing) responses
seriously very helpful though.

they're all 4x6 pictures. ended up scanning all at 600 dpi.
hopefully it works

realisemum
11-09-2005, 07:30 PM
720px X 576px 72 dpi

halo
11-09-2005, 10:05 PM
720px X 576px 72 dpi

dont assume everyone is the same country...PAL and NTSC are different frame sizes, and there are differing resolutions and pixel aspect ratio dependant on the method of transmission delivery

Tlock
12-08-2005, 09:34 PM
72dpi was from the age of Apple I and II. This is no longer correct. The common size is more like 96 dpi and think of things in terms of pixel dimension rather resolution. Not sure why PS keeps that value around espically on the PC side which has always been 96dpi.

PAL = 768 x 576
Widescreen PAL = 1024 x 576
NTSC 601 = 720 x 540
NTSC DV/DVD = 720 x 534
Widescreen NTSC 601 = 864 x 486
Widescreen NTSC DV/DVD = 864 x 480
HDTV 720p = 1280 x 720
HDTV 1080i/p = 1920 x 1080

That covers 90% of the world....

halo
12-08-2005, 09:47 PM
photoshop has presets, but you need to know the format so you know what one to use.

aldog
03-09-2006, 07:38 PM
72dpi was from the age of Apple I and II. This is no longer correct. The common size is more like 96 dpi and think of things in terms of pixel dimension rather resolution. Not sure why PS keeps that value around espically on the PC side which has always been 96dpi.

PAL = 768 x 576
Widescreen PAL = 1024 x 576
NTSC 601 = 720 x 540
NTSC DV/DVD = 720 x 534
Widescreen NTSC 601 = 864 x 486
Widescreen NTSC DV/DVD = 864 x 480
HDTV 720p = 1280 x 720
HDTV 1080i/p = 1920 x 1080

That covers 90% of the world....

I know that this is 3 months later, but THANK YOU for this!.
I'm scanning in more pictures for something else so this is perfect.

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