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Old Apr 22, 2003, 12:56 PM   #1
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Default 4x6 printing questions????

Hello,

Id like to know whats the best way to have Costco make my 4x6 prints. Im using an Olympus D-520Z. I take my pictures on the second from the highest level.

Here are my choices, Im using Irfanview to resize the images.

1. 1600x1200, 22x16, 72dpi, 405kb (no resizing)
2. 1600x1200, 8x6, 200dpi, 405kb
3. 432x288, 4x6, 72dpi, 43kb
4. 1200x800, 4x6, 200dpi 105kb

Which one will give me the best picture quality?

Thanks, Brad

Heres a link to some pictures Ive taken: http://www.picturetrail.com/ysr_racer
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Old Apr 22, 2003, 5:01 PM   #2
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Don't resample. Ignore dpi. Crop to 4X6 proportions. Save at same quality JPEG as you took the photo. You didn't say which program you're using. Most of them have a tool to crop to photo proportions. For example, if you used the whole width of the frame, your final crop would be 1600X1067.

Just glancing at the clay shoot photos, a lot of your photos could stand some heavy cropping (try to get closer or zoom tighter), so you should also be cropping the width on some of them. You might wind up with something like 1350X900 on some of them.
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Old Apr 22, 2003, 5:33 PM   #3
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It seems the most popular size for 4x6 is 1600x1200.
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Old Apr 22, 2003, 7:53 PM   #4
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Quote:
Originally Posted by ardvark50
It seems the most popular size for 4x6 is 1600x1200.
That will result in a bit of cropping along the long side. Cropping to 1600x1066 will do the job. Don't need to do anything else in terms of resizing.
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Old Apr 23, 2003, 12:07 AM   #5
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I'm confused. Shouldn't I bump up the DPI ?
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Old Apr 23, 2003, 1:44 AM   #6
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There is only so much dpi that they print in. Currently, they will only use about 2mp for a 4x6 print no matter how large a pic u give them.
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Old Apr 23, 2003, 7:48 AM   #7
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Quote:
Originally Posted by ardvark50
There is only so much dpi that they print in. Currently, they will only use about 2mp for a 4x6 print no matter how large a pic u give them.
288 dpi sounds just fine, but my local Wal*Mart will take a 90mp image and print it with no comment at all - I tried it just to find out what would happen. No idea if they downsized before printing. I suspect that they have limits on download images size just to keep idiots from tying up their lines.

I never mess with the dpi settings unless I am going to print directly from PhotoShop. And I haven't done that since I got QImage.
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Old Apr 23, 2003, 8:40 AM   #8
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UK Walmarts are using Fuji Frontiers who's max res. is 300dpi. There are some Kodaks (and their online service) that do 400dpi. BillD's 90Mb file would have been down sampled before printing.

The main thing to watch is they aren't downsampling below 300dpi(as for the 1Mpix happy snappy brigade), as it increases their thruput.

I don't know about your end, but the Fuji Frontiers here will print 41/2 X 6 as an option at no extra cost, which fits the sensor aspect ratio, without cropping. Something I discovered by accident, these printers know if a file has been edited. Over here they then print 'as found' . If it's straight out of the cam, no crop, they do their own exposure compensation etc which I've found gives reasonable chemico consistent prints on batches.
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