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02-11-2011, 11:04 PM   #1
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Why is my print result blurred

Hi I print out some photos today but the results came out unsharp on all of them. I am wondering whats wrong. They were taken with kx kit lens at iso 100 (the waterfront one) at 12mp resolution. It seems quite sharp in my screen too. Have i missed something along the way???

this one was printed at 12x18 and the print result looks as if the photo was taken with a vga, as if it doesnt have enough resolution.
[/url] [url=http://www.flickr.com/photos/59418821@N07/5438077450/]Waterfront[/url] by [url=http://www.flickr.com/people/59418821@N07/]El Robertos[/url], on Flickr" target="_blank">

Some of the other photos i took was also blurred although they were print @ 6x8 sizes. Not sure whats wrong
[/url] [url=http://www.flickr.com/photos/59418821@N07/5437471773/]IMGP3703[/url] by [url=http://www.flickr.com/people/59418821@N07/]El Robertos[/url], on Flickr" target="_blank">

02-11-2011, 11:15 PM   #2
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12x18 is pretty big and at that size it is a lot easier to notice blur. When you view a photo on your computer zoom into 100% and see how sharp is it. That will give you a better idea how sharp a 12x18 print will be. If you print that same photo at 4x6 it will look much sharper.

As for the 6x8, how much less sharp is it than what we see here? Again I would view that photo at 100% zoom to see the actual sharpness. It also could depend on what printer you are using. Last possibility, your expectations could be too high.
02-11-2011, 11:55 PM   #3
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I would try some sharpening of the image before printing. I find that sharpening for printing tend to require different settings than for the screen. And SLRs are often quite conservative in their sharpening by default (which is good since it allows the user to set it according to their liking), so do some trials of different settings until you find a setting you like.

If you do not use Photoshop, I quite like Focus Magic (can be downloaded free of charge for trials on a limited number of images)

Best regards,
Haakan
02-12-2011, 12:12 AM   #4
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The general rule is that the printer needs 240-300dpi for decent prints. Say for 12x18" at 300dpi, the actual resolution of the picture required will be 3600x5400. Prints also benefit from a little oversharpening, and even more for film scans.

02-12-2011, 07:13 AM   #5
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Event at 6x8 the print results are a bit blurred, i'll try printing at other place tomorrow. Doesnt seem to make sense photos taken at 12mp and looks sharp at 100% on the screen is blurred when printed out.

I've done the calcs on the required picture dimension and they are still sufficient so It should still be sharp Or at the very least the 4x6 or 6x8 is sharp.

Thanks a lot guys for the input, very much appreciated
02-12-2011, 07:58 AM   #6
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Considering that the second shot has a shutter speed of 1/4 I think it came out exceptionally well. Was that handheld?

The first shot was a 30 second exposure, so I assume you used a tripod. Did you use the timer delay so SR would automatically be disabled? How sturdy/steady is your tripod? Is there a roadway on the other side of that wall?
02-12-2011, 12:49 PM   #7
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What brand and model is the printer . Is it set up as high quality printing Type of paper??
02-12-2011, 02:33 PM   #8
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QuoteOriginally posted by wlachan Quote
The general rule is that the printer needs 240-300dpi for decent prints. Say for 12x18" at 300dpi, the actual resolution of the picture required will be 3600x5400. Prints also benefit from a little oversharpening, and even more for film scans.
+1
I don't use Photo Shop any more but I remember the default being 80dpi or something like that. Your exif shows 240dpi and PS should print it that way but if not, you will get a very bad print.

02-14-2011, 05:16 PM   #9
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QuoteOriginally posted by Mike Cash Quote
Considering that the second shot has a shutter speed of 1/4 I think it came out exceptionally well. Was that handheld?

The first shot was a 30 second exposure, so I assume you used a tripod. Did you use the timer delay so SR would automatically be disabled? How sturdy/steady is your tripod? Is there a roadway on the other side of that wall?
Just like to echo everything Mike Cash said... No way I'd have held that steady on 1/4 handheld!

I've also found that for longer exposures the 10sec timer gives better results than the 2sec timer... Not sure why but it does...
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