vuthy_chrun Posted August 11, 2003 Share Posted August 11, 2003 I recently acquired a Minolta Dimage Scan Elite 5400. I did some tests (you can read my detailed review and see some samples at http://www.photo-direct.net/cameras/Scan_Elite_5400-text.htm) and found that 2700 dpi is good enough for a 35mm negative or transparency, and that there is not enough difference (image sharpness) to justify the storage of your scan images in 5400 dpi resolution (at least 100 MB per image at 5400 dpi). I am interested in learning other people's opinion about the merit of scanning a 35mm slide or negative at a higher resolution than 2700 dpi. If you think that it is worthwhile to scan at higher resolution than 3700 dpi, then please substantiate your opinion by showing us some scanned images. Link to comment Share on other sites More sharing options...
rich815 Posted August 11, 2003 Share Posted August 11, 2003 If you're wanting to print larger without having to interpolate then yes. Link to comment Share on other sites More sharing options...
carl smith Posted August 11, 2003 Share Posted August 11, 2003 Generally, I find you can get almost 4000ppi of detail from a good slower speed film. Color negative materials don't contain as much, particularly at higher speeds. Going beyond 4000ppi only provides extra useful information in a few situations with certain films. The main benefit of the 5400 IMO isn't the extra resolution, although at 4000ppi and lower it should be quite good, but is the increased speed and density handling of the scanner. It's a much matured unit over scanners of years gone by but the extra resolution just helps sell the thing. Link to comment Share on other sites More sharing options...
marshall Posted August 11, 2003 Share Posted August 11, 2003 Perhaps I'll hunt down or create some scans at 2700 for comparison to scans at 4000 later this evening, but yes, there is reason to scan at higher resolution. If (as already said), you want to print larger than 9 inches across at 300 dpi, it's better to take that information directly from the original than try to invent it based on the 2700 dpi file. While there are certainly cases where 2700 may approach all of the information in the original image, there are also certainly cases where it does not. Though the results vary somewhat, tests do show that well-exposed film, taken with good equipment, can resolve much more detail than 2700. [5400 on the other hand, may well exceed the information present in many 35mm images, but that's for another time.] Link to comment Share on other sites More sharing options...
neil_parker Posted August 11, 2003 Share Posted August 11, 2003 Ijust purchased the 5400, and so far it seems superb, after a couple of 48 bit/5400 dpi scans at 200+mb I ran out and purchased a 160gb HD! Link to comment Share on other sites More sharing options...
stb Posted August 11, 2003 Share Posted August 11, 2003 I have ordered a 5400 an am waiting for it. I currently own the original Elite (2820dpi). I ordered it because there were things my enlarging lense would show that the Elite scanner wouldnot. For me, that shows that there is more in my B&W films than the 2820dpi elite is able to see. Colour films do have lower resolution than B&W. Now, you chose velvia, one of the highest resolution E6 films. I have downloaded your TIFF files. I do not agree that comparison should be made with downsizing the 5400dpi file, because by doing that you obviously negate any advantage it could have. So I upsampled your 2700dpi file. I agree with you that the differences are negligible. I do not agree, though, that it meens that 5400dpi is useless. To me, your scans show that the limiting factor of this shot is either the lens or the focusing precision of the shot. I think of the lens bescause colour fringes are very present, betraying a lense that maybe cannot fully exploit Velvia. Link to comment Share on other sites More sharing options...
leif_goodwin8 Posted August 12, 2003 Share Posted August 12, 2003 I certainly agree with the comments above about newer and hence better technology (less noise, faster, cheaper) and more scanned pixels allowing smoother enlargements. Also you might get less grain aliasing and hence smoother tones. I think that 4000 DPI does make a slight difference in terms of detail if you use a fine grain film (Provia 100F) and good technique. Otherwise, it won't. I'll try and get some scans to confirm/disprove this statement. (But I'll have to do this later when I get home from work.) Link to comment Share on other sites More sharing options...
leif_goodwin8 Posted August 12, 2003 Share Posted August 12, 2003 Vuthy: I will make one comment on your review. You state that you should always scan with USM on. Many people would disagree. I prefer to scan with USM off. I can then apply high pass sharpening in Photoshop. I find this gives me more flexibility. Of course at the end of the day this is a matter of taste. Link to comment Share on other sites More sharing options...
roger krueger Posted August 12, 2003 Share Posted August 12, 2003 I can see stuff in a loupe that my 4000 dpi scanner misses. Of course, the fact that I'm shooting Tech Pan may have something to do with it :) If my scanner can't see it, how am I supposed to upload it for you?? Link to comment Share on other sites More sharing options...
vuthy_chrun Posted August 13, 2003 Author Share Posted August 13, 2003 Leif, You are absolutely right. I do use USM in Photoshop, not with the Minolta-supplied software. I will update my text to reflect this. In fact, I now do the following routine religiously when I scan a negative or a slide: 1) Minolta: manual focus adjustment. 2) Photoshop: rotate and/or crop whenever necessary. 3) Photoshop: Usharp Mask. 4) Photoshop: Auto Levels. 5) Photoshop: Auto Constrast. 6) Photoshop: Auto Color. 7) Photoshop: Manually color balance (if auto color is not satisfactory). 8) Photoshop: tweak with the 'curves' if still not statisfied with the visual result. Link to comment Share on other sites More sharing options...
vuthy_chrun Posted August 26, 2003 Author Share Posted August 26, 2003 <p>Because a few people had said that my tests could be flawed by the use of a low quality lens (Nikkor 200/4 circa. 1972), I did another series of tests using a Micro-Nikkor 55mm/3.5 on Velvia 50 film.</p><p>Please click<a target="_blank" href="http://www.photo-direct.net/cameras/Scan_Elite_5400-new_tests.htm">HERE</a> to see the new set of tests.<br> </p> Link to comment Share on other sites More sharing options...
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