[MacDV] dias and idvd

[John Kiss]

DVD has a resolution of 720 x 480 so if you had 6 x 4 pictures you  
would need to scan at 120 DPI.  From what I have read the maximum  
information that a good quality photo print contains is less than 600  
DPI, actually the scan quality drops as you increase the DPI value  
past this point as you start scanning the texture and imperfections  
of the paper.  If you want to preserve the prints in a digital form  
as well as on a DVD I would recommend to scan at 600 DPI if all you  
want to do is make this DVD and show these photos any information  
above 120 DPI will be lost so you would only be creating file bloat.   
If you want to crop any of the pictures or apply the Ken Burns effect  
you will also need to scan at a higher resolution.

Good luck with your project, it will be time consuming but it can  
also be very satisfying work.

Gerhard

P.S. My figures assume that the scans would be used in a NTSC  
project, if you are creating a PAL project you will need to adjust  
the calculations according to those dimensions which I don't know off  
the top of my head but I believe the vertical resolution is higher.


On Aug 9, 2005, at 3:28 AM, Ferdinand Fuchs wrote:



> hello,
>
> a friend of mine would like to scan his old dias, so he can use  
> them in idvd. therefore he asked me, if I can recommend him a  
> scanner. I like canon-scanners and so I recommended him the  
> cansoscan 5200f or the canoscan 8400f. but I'm not sure, which  
> resolution I need to get good photos for idvd. canoscan 5200f has  
> 2.400x4.800 and canoscan 8400f has 3200x6400
>
> so I would like to ask, if somebody has experiences with this topic  
> and could share with me - thanks!
>
>
> ferdinand
>
>


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