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Scanner Versus Slide  
User currently offlinePlanedoctor From United States of America, joined Mar 2001, 286 posts, RR: 1
Posted (10 years 9 months 5 days 17 hours ago) and read 2030 times:

Hi there,

I have been a D-SLR user for a quite a while, and now I am learning and discovering slide photography for the fun of it. I have a scanner that a lot of you would probably laugh at--an all-in-one scanner/printer/copier, but it does advertise a 2400x4800 dpi optical resolution, and it gets great reviews in its class. Sure, it is no FS4000 or Nikon CoolScan, but for the amount of money I have invested in digital equipment, and the amount of time I'll actually use film, this is about where my budget hits. That said...

I was wondering if there is a way to test to see if the scans I am getting at 2400dpi are blurry as a result of my camera/technique, or if the scanner is really not giving me true 2400dpi scans. I also don't know if I am just used to DSLR crispness, and film/slide scans just require more tweaking to look sharp. I have tried scanning small things like a Sony Memory stick to see how sharp it comes out, and it seems really crisp that way, so perhaps my slides are just not real sharp. I was using an old beat up second-hand EOS 5, so I really don't know if my scans were not sharp as a result of a third factor being a problem with the camera. I was using "L" glass and at wide angles (or sometimes telephoto with image stabilization) in bright conditions with good shutter speeds, so I didn't think it was a problem with technique in that regard. I have a photo posted at full resolution and unsharpened scan here: http://www.pbase.com/image/27432634 Could someone tell me if this is normal for a scan, or if there is something wrong in the process? (note the image is a not of an aircraft, but I hope to be using this setup to shoot aircraft shortly) Thanks!


5 replies: All unread, jump to last
User currently offlinePlanedoctor From United States of America, joined Mar 2001, 286 posts, RR: 1
Reply 1, posted (10 years 9 months 5 days 2 hours ago) and read 1968 times:

Could someone who has scanned a lot of slides at 2400 dpi or thereabouts comment on the large photo please, as far as how quality compares?


User currently offlineStaffan From , joined Dec 1969, posts, RR:
Reply 2, posted (10 years 9 months 5 days 1 hour ago) and read 1963 times:

Not that bad considering it's a flatbed. I'll try to scan a slide at 2800 on my minolta later this evening and post it here.


User currently offlineCkw From UK - England, joined Aug 2010, 769 posts, RR: 16
Reply 3, posted (10 years 9 months 5 days ago) and read 1949 times:

Hmm not quite sharp, as you say, but I do think its the scanner rather than your image - the grain in the sky is also soft. If the scan was sharp, grain should be clearly delineated even if the picture was blurry.

Are the slides mounted? I think this could be the problem ... the plane of focus will be on the glass plate, but the film will be floating slightly above this. You could try unmounting the slide, or perhaps the scanner has a focus adjustment.



Colin K. Work, Pixstel
User currently offlineStaffan From , joined Dec 1969, posts, RR:
Reply 4, posted (10 years 9 months 5 days ago) and read 1950 times:

Here's a Velvia scanned at 2800 on the minolta scan dual 2. Straight from Vuescan with no processing, only converted to 24 bit and saved as jpg compression 10 (2 MB).

Click here


User currently offlinePlanedoctor From United States of America, joined Mar 2001, 286 posts, RR: 1
Reply 5, posted (10 years 9 months 4 days 23 hours ago) and read 1935 times:

Thank you SO much, you guys. Thanks Staffan for the file- I think my file pales quite a bit compared to yours. I think I need to figure out where the problem is- whether in my film or in my scanner. Colin, the actual film plane is higher than the plane of the glass since the slides are mounted, but that is how the scanner directions tell you to do it. Infortunately I don't think there is an automatic focus. I wish I could figure out how to improve the scans. The all-in-one is still new enough I can return it, but I don't know what I would get in its place. Like I said, digital has been my thing, and the slides are just for fun. My wife really likes the all-in-one, and maybe that is all I will be able to get, so I will have to tweak what I can out of it!



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