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Help With BadScan  
User currently offlineBruce From United States of America, joined May 1999, 5046 posts, RR: 15
Posted (11 years 2 months 1 week 3 days 5 hours ago) and read 1693 times:

What makes these rejects "bad scan"? they were shot under good weather conditions, but i'm not sure what I should do to fix them. is it the grain in the sky? the overall light? or something else?

http://airliners.net/procphotos/rejphoto.main?filename=N801DE_4592.jpg
http://airliners.net/procphotos/rejphoto.main?filename=N116DL_4506.jpg
http://airliners.net/procphotos/rejphoto.main?filename=N655DL_4510.jpg

bruce


Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
8 replies: All unread, jump to last
 
User currently offlineClickhappy From United States of America, joined Sep 2001, 9603 posts, RR: 69
Reply 1, posted (11 years 2 months 1 week 3 days 5 hours ago) and read 1683 times:
AIRLINERS.NET CREW
PHOTO SCREENER

Bruce,

To my eye they look slightly overexposed (washed out) and somewhat unsharp. There also seems to be a strong magenta cast on all three shots.

Royal


User currently offlineTomh From United States of America, joined May 1999, 960 posts, RR: 2
Reply 2, posted (11 years 2 months 1 week 3 days 5 hours ago) and read 1679 times:

They do seem a tad unsharp. Also, I would eliminate that object in the lower left of the B757 shot, though that is not related to badscan.

tomh


User currently offlineFUAirliner From Germany, joined Jul 2001, 538 posts, RR: 3
Reply 3, posted (11 years 2 months 1 week 3 days 3 hours ago) and read 1644 times:

Bruce,

all three shots show some strange irregularities in the horizontal lines. Every horizontal line looks kind of blotchy. Together with too little USM this causes the overall unsharp appearence of the images. This effect may come from a wrong resizing method (do you use "bicubic"?).


Frank
FU Airliner Photography



Frank Unterspann - Hamburg, Germany
User currently offlineBruce From United States of America, joined May 1999, 5046 posts, RR: 15
Reply 4, posted (11 years 2 months 1 week 3 days 3 hours ago) and read 1626 times:

As for the blotchy horizontal lines I dont know what causes them, does anyone else know? it looks that way on the original so it is not related to resampling. it is very strange.
this one was one of the better looking of the ones taken from this location - airborne plane set against sky background. I used aperture priority, and its 1/1200 or so shutter at f5.

I did use unsharp mask. I can try a littl more.

bruce



Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
User currently offlineCkw From UK - England, joined Aug 2010, 730 posts, RR: 16
Reply 5, posted (11 years 2 months 1 week 3 days 2 hours ago) and read 1619 times:

Bruce - yes two things contribute to the badscan here - the "blotchy" lines and the distinct magenta cast. As to the latter, I'm sure I have pointed this out to you before in a rejection note, and other screeners have noticed it too - I'm afraid its becoming a bit of a trademark  Smile

Perhaps its time to accept that your monitor is lying to you and spend some time in serious recalibration - its hurting some otherwise fine shots!

Cheers,

Colin



Colin K. Work, Pixstel
User currently offlineStaffan From , joined Dec 1969, posts, RR:
Reply 6, posted (11 years 2 months 1 week 3 days ago) and read 1603 times:

A piece of advice would be to shoot at lower shutter speeds, 1/1200 is overkill. Try something like 1/500 and stop the lens down to f/8 or something and you will probably see better results.

Staffan


User currently offlineBruce From United States of America, joined May 1999, 5046 posts, RR: 15
Reply 7, posted (11 years 2 months 1 week 2 days 18 hours ago) and read 1595 times:

I was using aperture priority so the camera had decided that it needed 1/1200 to go with that f5. I guess I'll go back to shutter priority.

bruce



Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
User currently offlineClickhappy From United States of America, joined Sep 2001, 9603 posts, RR: 69
Reply 8, posted (11 years 2 months 1 week 2 days 7 hours ago) and read 1570 times:
AIRLINERS.NET CREW
PHOTO SCREENER

I wouldn't use either of those settings. If you are shooting AP then your lens is wide-open, and if f5 is wide open I am guessing your shots will also be soft no matter what you do (due to the quality of the lens). Shooting SP will increase the shutter speed, meaning the lens will also need to be wide open to allow as much light as possible.

Does your camera have a Program Mode, or something like that? If not, manually stop the lens down to f/8 and see what kind of shutter speed that gets you.


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