Sponsor Message:
Aviation Photography Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
General Negative Scanning Question  
User currently offlineDispatcher From United States of America, joined Jun 1999, 253 posts, RR: 5
Posted (7 years 5 months 1 week 6 days 15 hours ago) and read 3220 times:

I've just got into using the negative scanning feauture of my HP Scanjet 4890 but have encountered some problems as follows:

Low res scans (<600 dpi) have good color / contrast but of course lack detail when scanning the negative. For example, I can't read the number on the nose but the sky and clouds are properly exposed.

High res scans (>600 - 9600 dpi) Sky and cloud detail is completely blown out, no clouds are even visible and the definition between the top of the fuse and the sky is completely lost. However, the small details such as the number on the nose are very clear.

It almost seems to me that the longer the scanner is spending going over the image for the higher resolution, it is almost like it is 'overexposing' it and blowing out the details. I tried searching the forum here but got no joy, please excuse me if I overlooked something obvious.

This all came about from an inquiry into the purchase of one of my photo's displayed here that was scanned from a 4x6 print a long time ago. In the print, both the nose number and clouds are visible with fairly good contrast, not great but ok. I would like to send the individual a much better rendition of the actual photo if possible but I'm starting to get frustrated. I have even tried scanning the 4x6 print again and it looks better than the negative scan in color / brightness / contrast but then it is covered with scratches and dirt. Here's the link to the A.net photo in question.


View Large View Medium
Click here for bigger photo!

Photo © Brad Hayes



Disclaimer: This photo was added way back and I am fully aware it doesn't meet today's standards. If I can get a better scan though I would like to re-upload a better rendition.

Thanks in advance for the help!

8 replies: All unread, jump to last
 
User currently offlineDispatcher From United States of America, joined Jun 1999, 253 posts, RR: 5
Reply 1, posted (7 years 5 months 1 week 6 days 8 hours ago) and read 3186 times:

Nothing huh? Come on guys, I know if anybody can help me the folks on THIS forum can!

User currently offlineCalgaryBill From Canada, joined May 2006, 686 posts, RR: 6
Reply 2, posted (7 years 5 months 1 week 6 days 2 hours ago) and read 3169 times:

I don't know that model of scanner so can't offer much help. A guess about the definition between fuselage and sky though is that the scanner might be using extrapolation to increase the resolution? If you can, try the scan at the unit's highest native resolution and see if it improves.

Another thing you could try is turning on/off the Digital ICE (or any other dust/scratch software you're using) in case it is causing the problem.

I'm kind of stumped though - can't imagine why changing the resolution is affecting the overall brightness/contrast levels. I use an Epson Perfection 4870 and changing resolution has no affect on exposure. It also has manual levels, gamma and curves adjustments that can be applied betwen previewing and scanning the slide. If yours has the same options, manually setting levels might solve the exposure problem.

B


User currently offlineDendrobatid From United Kingdom, joined Nov 2004, 1648 posts, RR: 62
Reply 3, posted (7 years 5 months 1 week 6 days 2 hours ago) and read 3167 times:
AIRLINERS.NET CREW
HEAD SCREENER

Quoting Dispatcher (Reply 1):
Come on guys, I know if anybody can help me the folks on THIS forum can!

I read the message last night and whilst I do do a lot of slide and negative scanning - I simply do not have an answer.
I use a Minolta Scan Elite and did use a Nikon Coolscan III and both have a curves adjustment. Maybe lowering the contrast a bit using that (if yours has it) would help.

Mick Bajcar


User currently offlineGranite From UK - Scotland, joined May 1999, 5568 posts, RR: 64
Reply 4, posted (7 years 5 months 1 week 5 days 22 hours ago) and read 3147 times:
Support Airliners.net - become a First Class Member!

Dispatcher

Like Mick I do a lot of scanning but cannot help with this model.

To me it looks as if you have the settngs wrong. Are you using the scanning software that came with the scanner?............if so STOP!

Pick up Vuescan and be blown away with the difference in scan quality. All my negative scans are processed this way. Search the forum for previous posts on this as a starting point.

Regards

Gary


User currently offlineDispatcher From United States of America, joined Jun 1999, 253 posts, RR: 5
Reply 5, posted (7 years 5 months 1 week 5 days 10 hours ago) and read 3113 times:

Dang, I was hoping one of you folks would have had the magic bullet to fix my problem!

Quoting CalgaryBill (Reply 2):
If you can, try the scan at the unit's highest native resolution and see if it improves.

Tried that. - Only gets worse

Quoting CalgaryBill (Reply 2):
Another thing you could try is turning on/off the Digital ICE

Did that as well. - no change

Quoting Dispatcher (Reply 1):
manually setting levels might solve the exposure problem.

Yep. - Some change here but I end up with some really odd colors (yellow sky) by the time I get it to where it has enough contrast to pick up the lighter details.

Quoting Dendrobatid (Reply 3):
Maybe lowering the contrast

See above

Quoting Granite (Reply 4):
Are you using the scanning software that came with the scanner?............if so STOP!

Guilty as charged. Just downloaded VueScan and will give it a try tonight.

Thanks for your input guys!


User currently offlineGranite From UK - Scotland, joined May 1999, 5568 posts, RR: 64
Reply 6, posted (7 years 5 months 1 week 4 days 22 hours ago) and read 3090 times:
Support Airliners.net - become a First Class Member!

Dispatcher

Quoting Dispatcher (Reply 5):
Guilty as charged. Just downloaded VueScan and will give it a try tonight.

Thanks for your input guys!

It takes a while getting the scans the way you want them but believe me it works great. A lot of fiddly settings but start with the standard default scan then choose your film emulsion before final scanning.

Scan settings can be saved as a .ini file so if you want, mail me at gary@airliners.net and I can send you my negscan.ini file which is set as my default scan.

Regards

Gary


User currently offlineDispatcher From United States of America, joined Jun 1999, 253 posts, RR: 5
Reply 7, posted (7 years 5 months 1 week 4 days 5 hours ago) and read 3070 times:

Wow, what a difference. I guess the bundled software from HP is a total joke. Just scanned with the demo version of VueScan and it pulled detail off the negative I didn't realize was even there. In fact it now looks like the original photo was taken near sunset with lots of colors in the sky. I really can't remember what the real sky looked like when it was captured but it looks pretty good now! I don't have the cash budgeted at the moment for the $50 entry fee but I'll pick it up soon. Thanks for the great help guys!!

Email inbound Gary - thanks.


User currently offlineGranite From UK - Scotland, joined May 1999, 5568 posts, RR: 64
Reply 8, posted (7 years 5 months 1 week 2 days 21 hours ago) and read 3046 times:
Support Airliners.net - become a First Class Member!

Dispatcher

No mail received yet.

Regards

Gary


Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Age Of A Negative And Scanning Question. posted Sun Sep 29 2002 07:24:32 by JeffM
Picture Scanning Question. posted Thu Jul 10 2003 17:35:41 by Cancidas
Quick Question About Scanning posted Thu Oct 6 2005 01:58:29 by ACDC8
Question Re Scanning Slides posted Sun Oct 28 2001 17:58:36 by Round_engine
Question: Scanning Prints Or Scanning Negatives? posted Thu Aug 2 2001 20:20:09 by Connector4you
Question About Scanning posted Mon Feb 5 2001 08:26:14 by Bruce
An Idiots Question About Scanning posted Sat Aug 26 2000 19:52:16 by Scotty
Question About Bangkok Suvarnabhumi International posted Sun Nov 19 2006 15:34:39 by Airimages
Level Rjxn - Screener/general Comment Requested posted Sat Nov 18 2006 19:33:41 by D L X
Photoshop Question posted Wed Nov 15 2006 00:24:51 by KBFIspotter
SXM Arrivals Question posted Mon Oct 24 2011 19:18:19 by tomcatpilot1