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Questions On Converting Slides And Photos To Digital


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#1 HowardsMF155 OFFLINE  

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Posted May 20, 2014 - 07:33 AM

At one time there were some members on this site sharing some lovely photos.  I'm hoping to get some information here now that I'm working on getting a number of old family slides (thousands?) into digital files.

 

First, some of the slides just didn't age well.  Some of them have contracted a fungus, others have not held their color over the last 50 years.  I'm assuming those will be difficult or impossible to restore at home, though a professional might be able to do something.

 

Second, I'd like some input on scanning resolution and file size.  Part of the reason I'm digitizing these files is so that unique slides can be shared with all my siblings.  I doubt that there will be any attempt to create large prints, and probably no attempt to broadcast or show large scale projections from these files.  By the way, this is 35 mm color positive slide film.  The scanner I have produces a roughly 2.5 Mb file, and a resolution of 5472x3648.  Any opinion on whether this is a sufficiently high resolution?

 

Third, the scanner is capable of doing some exposure correction during the scanning process.  However, it does require user input which means I can't simply insert a slide, push a button, then insert the next slide.  Instead, I would have to insert a slide, evaluate the exposure on the rather small (and directional) screen, make any corrections to exposure, scan the slide, then insert and evaluate the next slide.  Should I expend the extra effort to scan the slide correctly the first time, or can modern photo tools correct issues easily enough post-scanning?  

 

I'll attach some scans shortly.



#2 HowardsMF155 OFFLINE  

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Posted May 20, 2014 - 07:36 AM

I'd assume this one is dark in the corners due to insufficient flash.  I'm guessing there is little or nothing that can be done to even up the lighting across the slide?Scanned 001.JPG



#3 HowardsMF155 OFFLINE  

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Posted May 20, 2014 - 07:46 AM

This one I used the built in exposure compensation to lighten up.

Scanned 039.JPG Scanned 065.JPG

 

And I found this information about the picture:

Picture information on scanned slides.PNG

Note the 4064 dpi resolution, which I think is good.  Also the color bit depth is 24, which I thought is on the low side.  Any thoughts?

 

 



#4 Alc ONLINE  

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Posted May 20, 2014 - 10:47 AM

A few years ago I scanned old B&W  pictures and saved them to tiff    format  http://en.wikipedia....age_File_Format  saving to very large file size ( I can't remember how big )  figured those discs & files would be the masters , then off of the masters I could save right  to jeg  , some I cropped and zoomed in for close-ups without getting fuzzy then to jeg  . Then it made for nice DVDs



#5 olcowhand ONLINE  

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Posted May 20, 2014 - 02:43 PM

Howard, I used "Gimp" to brighten & raise the contrast.

 

pic test.jpg


  • HowardsMF155 said thank you

#6 MH81 ONLINE  

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Posted May 20, 2014 - 04:52 PM

Howard, I used "Gimp" to brighten & raise the contrast.
 
attachicon.gifpic test.jpg


Was that from the dark one or the light one?

#7 olcowhand ONLINE  

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Posted May 20, 2014 - 05:42 PM

Was that from the dark one or the light one?

 

The lighter one, but I'll try the darker one now.



#8 olcowhand ONLINE  

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Posted May 20, 2014 - 05:53 PM

No, using the darker one didn't do so well with Gimp.

 

howard.jpg






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