Since standard def video has a resolution of 72dpi does it make any sense to scan prints or slides any higher if they are destined only for use in MF Slideshow?
I see companies claiming to scan at 2000dpi, which is fine for prints but seems a tad overkill for just making a DVD slideshow.
It would seem the rendering would go faster at 72dpi than at a higher rez.
Any thoughts?
What scanning resolution for use in Slideshow?
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Scooterspal
- Posts: 48
- Joined: Thu May 25, 2006 1:14 pm
Actually, video resolution is not measured in dpi (dots per inch). Since the size of video monitors varies, the number of dots/pixels per inch depends on the size of the screen.Since standard def video has a resolution of 72dpi...
A scanner, printer, or monitor can be rated in DPI or PPI, not the image itself. A standard size TV is much worse than 72 PPI, but a standard scanner/photo is much smaller, so it needs more DPI to handle the same amount of data.
Use a high resolution. 2000 DPI is probably overkill, and 72DPI is probably too low... You will have to experiment.
Standard video is 720x480 for NTSC and 720x576 for PAL. So you would think that a 720x480 still would be perfect, but it's not! Still images contain square pixels, video pixels are rectangular. A 720x480 (or 720x576) still image does not have the correct 4x3 or 16x9 video proportions.
No matter what resolution you provide, it will have to be converted. A high resolution original will provide more data for the conversion process, and should give the best results.
[size=92][i]Head over heels,
No time to think.
It's like the whole world's
Out of... sync.[/i]
- Head Over Heels, The Go-Gos.[/size]
No time to think.
It's like the whole world's
Out of... sync.[/i]
- Head Over Heels, The Go-Gos.[/size]