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Scan Resolution Charts
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The most common question we hear is ... "What rate do I have to scan my negatives at to get a specific size file or print?"  We have to admit that it can be a confusing topic even for professional photographers.  The size of the resulting file is always of utmost concern to those who must know if their scan will be of sufficient size to produce a quality print for publication.  The converse is equally important.  You do not need to produce huge files if your intended purpose is for use on a web site or as an email attachment.  That merely creates unnecessarily long download times, and in some cases may not reach that email recipient, due to mailbox size limitations.  If the intended use of the file is currently unknown or varied, it is always best to scan at a higher rate initially.  Then, if you need a smaller file, it is an easy process to downsize in Photoshop or other image editing programs.

 

So, to help clear up some of the confusion, we have provided some basic file size charts.  We do not provide a chart for every film format, but we do for the main ones.  Refer to these charts when attempting to determine your file size needs.  For additional information, please check out the handy megapixel chart, as well as the scanning and printing resolution calculator on our links page here.  

 

35mm Slide Scans 

 Scan Resolution
 Approximate Pixels

 

Approximate Print Size @ 300ppi


 Approximate TIFF File Size
 Approximate # of Files (TIFFs)
Per CD  Per DVD 
       8 bit
 16 bit
 8 bit
16 bit
8 bit
16 bit
2000ppi
2891 x 1973  9.6 x 6.5 inches   16.3 MB 32.6 MB  42  21  275 137 
3000ppi  4336 x 2959  14.4 x 9.8 inches   36.7 MB
73.4 MB  18  122  61 
4000ppi  5782 x 3946  19.2 x 13.1 inches   65.3 MB
131 MB   10  5  68 34

Note:   Numbers are approximate. Actual results may vary.  
 

 

 35mm Negative Scans

 Scan Resolution Approximate Pixels

 

Approximate Print Size @ 300ppi


 Approximate TIFF File Size   Approximate # of Files (TIFFs)
 Per CD
Per DVD
       8 bit
 16 bit
8 bit
16 bit
8 bit
16 bit
2000ppi  2979 x 1973
9.9 x 6.5 inches  16.8 MB
 33.6 MB
41  20   267 133 
3000ppi   4469 x 2959
14.9 x 9.8 inches   37.8 MB   75.6 MB  18  118  59
4000ppi  5959 x 3946  19.9 x 13.1 inches    67.3 MB   134.6 MB
 10  66  33

Note:   Numbers are approximate. Actual results may vary.  

 

120/220 (6x6cm) Negative Scans

 Scan Resolution  Approximate Pixels

 

Approximate Print Size @ 300ppi


Approximate TIFF File Size
Approximate # of Files (TIFFs)
 Per CD Per DVD
      8 bit  16 bit
8 bit
16 bit
8 bit
16 bit
1000ppi  2240 x 2240  7.4 x 7.4  14.4 MB 28.8 MB  48 24   311 155 
2000ppi  4480 x 4480  14.9 x 14.9   57.4 MB
114.8 MB  12 6  78 39 
3000ppi  6721x 6721  22.4 x 22.4   130 MB
259 MB   5   2  34  17
4000ppi  8961 x 8961  29.8 x 29.8
 230 MB
460 MB  3  1  19  9

Note:   Numbers are approximate. Actual results may vary.  
 

 

120/220 (6x7cm) Negative Scans

 Scan Resolution  Approximate Pixels  Approximate Print Size @ 300ppi  Approximate TIFF File Size Approximate # of Files (TIFFs) 
Per CD
Per DVD 
       8 bit
16 bit
8 bit
16 bit
8 bit
16 bit
1000ppi   2240 x 2756  7.4 x 9.1 inches   17.7 MB
35.4 MB  39  19  253 126 
2000ppi   4480 x 5512
14.9 x 18.3 inches
70.6 MB 141.2 MB  9  4  63  31
3000ppi   6721 x 8268
22.4 x 27.5 inches
 159 MB
 318 MB
 4  2  28  14
4000ppi    8961 x 11016
 29.8 x 36.7 inches
 283 MB
 566 MB
 2  1  15  7

Note:   Numbers are approximate. Actual results may vary.  
 

 

120/220 (6x9cm) Negative Scans

Scan Resolution
Approximate Pixels
 Approximate Print Size @ 300ppi Approximate TIFF File Size
Approximate # of Files (TIFFs)  
 Per CD Per DVD
       8 bit
16 bit
8 bit
16 bit
8 bit
16 bit
1000ppi 2240 x 3295  7.4 x 10.9 inches   21.1 MB
42.2 MB   32  16  212 106 
2000ppi  4480 x 6591  14.9 x 21.9 inches   84.5 MB
169 MB   8  4  53 26 
3000ppi  6721 x 9886  22.4 x 32.9 inches   190 MB
380 MB   3  1  23 11 
4000ppi  8961 x 13176  29.8 x 43.9 inches   338 MB
676 MB   2  1  13

Note:   Numbers are approximate. Actual results may vary.

 

 

4x5 Large Format Scans

Scan Resolution
 Approximate Pixels Approximate Print Size @ 300ppi
Approximate TIFF File Size
  Approximate # of Files (TIFFs) 
 Per CD Per DVD 
       8 bit
16 bit
8 bit
16 bit
8 bit
16 bit
 500ppi 2000 x 2500   6.6 x 8.3 inches  14.3 MB 28.6 MB  48 24   313  156
  1000ppi  4000 x 5000   13.3 x 16.6 inches
 57.2 MB
 114.4 MB  12  78  39
 2000ppi  8000 x 10000   26.6 x 33.3 inches   229 MB
 458 MB
 3  19  9

Note:   Numbers are approximate. Actual results may vary.

 

   

Print Scans

Print Size
Scan Resolution
 Approximate Pixels  Approximate TIFF File Size  Approximate # of Files (TIFFs)
 Per CD  Per DVD
4 x 6 inches  300ppi  1200 x 1800  6.2 MB 112  724 
4 x 6 inches  600ppi  2400 x 3600  24.7 MB 28  181 
5 x 7 inches  300ppi  1500 x 2100   9.0 MB
77  500
5 x 7 inches  600ppi  3000 x 4200   36.0 MB
19  125 
  8 x 10 inches  300ppi  2400 x 3000   20.6 MB
33   217 
 8 x 10 inches
600ppi  4800 x 6000   82.4 MB
54

Note:   Numbers are approximate. Actual results may vary.

 
 

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