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Old 07-08-2009, 03:10   #1 (permalink)
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Printing poster size......

How do I get my pics to fit a 20"x30" size poster print out so that its fits correctly. I exported the pic at 4000x3897 which was the default 20x30 on aperture2 and its not fitting good at all any suggestions or tips on this matter

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Old 07-08-2009, 08:13   #2 (permalink)
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Re: Printing poster size......

You can adjust the print size in most applications. Your frame has a ratio of 3:2 so you will have to ensure that your image also has this ratio to make it fit evenly.

Your 4000x3897 is almost square, so it will never fit evenly into a rectangle.

I think most dSLRs have a 3:2 ratio, but most proper photo frames have a 5:4 ratio. This is based on the old 'whole plate' size of 10x8. Modern frames are often beased around the paper sizes of A^,A5,A4 etc. This is close to, but not quite 3:2.

If you look at the 'rules' of framing you will find that one of the conventions is to have a wider border on the bottom than the other three sides. This is how most prints are displayed in galleries
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Old 07-08-2009, 15:28   #3 (permalink)
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Re: Printing poster size......

Quote:
Originally Posted by Dabhand16 View Post
You can adjust the print size in most applications. Your frame has a ratio of 3:2 so you will have to ensure that your image also has this ratio to make it fit evenly.

Your 4000x3897 is almost square, so it will never fit evenly into a rectangle.

I think most dSLRs have a 3:2 ratio, but most proper photo frames have a 5:4 ratio. This is based on the old 'whole plate' size of 10x8. Modern frames are often beased around the paper sizes of A^,A5,A4 etc. This is close to, but not quite 3:2.

If you look at the 'rules' of framing you will find that one of the conventions is to have a wider border on the bottom than the other three sides. This is how most prints are displayed in galleries
Thanks dabhand for that info
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Old 07-08-2009, 16:32   #4 (permalink)
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Re: Printing poster size......

If printing at 30x20 inches I would aim for about 150-200 dpi as that is ample for such a big picture. 300dpi is generally considered the highest res but frankly that is unnecessary here as you don't view a 30x20 from close up in the way you do a small photo.

So, the size in pixels should be about 4500x3000 to 6000 x 4000 but this latter size would require a fair bit of interpolation. Even a full-frame sensor dSLR like the Nikon D3 will only produce a 4256 x 2832 picture so one third of the pixels would need to be interpolated pixels to get up to the 200dpi size.

Ok, that's the down side, here's the much better up side: just tell the printer to print your picture at 30x20 inches and don't worry about the rest. As long as your image is of 3:2 ratio, as Graham said, you will be fine. If your picture is any other ratio it is not going to look right at 30x20 as it will be distorted or will have a large border along two opposite sides.

You CAN print a 30x20 print from a dSLR, but don't bother with the maths, just ensure your picture is of the right ratio (ie as it was when it came out of your camera!) and the rest will all happen naturally.
I am assuming you are sending this off to one of the online printers to get it printed.

Let us know what the result looks like. It is not going to be razor sharp, not at that size, but you don't need it to be. After all, a poster bigger than A2 is viewed from a fair way back! I'll look out for it at my nearest bus stop shelter

Cheers,
Rob
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Old 07-08-2009, 23:13   #5 (permalink)
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Re: Printing poster size......

Quote:
Originally Posted by Rob Barron View Post
If printing at 30x20 inches I would aim for about 150-200 dpi as that is ample for such a big picture. 300dpi is generally considered the highest res but frankly that is unnecessary here as you don't view a 30x20 from close up in the way you do a small photo.

So, the size in pixels should be about 4500x3000 to 6000 x 4000 but this latter size would require a fair bit of interpolation. Even a full-frame sensor dSLR like the Nikon D3 will only produce a 4256 x 2832 picture so one third of the pixels would need to be interpolated pixels to get up to the 200dpi size.

Ok, that's the down side, here's the much better up side: just tell the printer to print your picture at 30x20 inches and don't worry about the rest. As long as your image is of 3:2 ratio, as Graham said, you will be fine. If your picture is any other ratio it is not going to look right at 30x20 as it will be distorted or will have a large border along two opposite sides.

You CAN print a 30x20 print from a dSLR, but don't bother with the maths, just ensure your picture is of the right ratio (ie as it was when it came out of your camera!) and the rest will all happen naturally.
I am assuming you are sending this off to one of the online printers to get it printed.

Let us know what the result looks like. It is not going to be razor sharp, not at that size, but you don't need it to be. After all, a poster bigger than A2 is viewed from a fair way back! I'll look out for it at my nearest bus stop shelter

Cheers,
Rob
Awesome info Rob Thats the prob with the photo i have now, I had to crop it and now it is way out of ratio I am going back to the raw file and see if it'll fit correctly before I PP it again I have the d80 which is 10mp and I have no clue about the interpolated pixels stuff as I am still new to photography "6 months" so I shall do some research and see if I can get some results and pics to show how it turned out
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Old 08-08-2009, 09:45   #6 (permalink)
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Re: Printing poster size......

Quote:
Originally Posted by Ryan24 View Post
How do I get my pics to fit a 20"x30" size poster print out so that its fits correctly. I exported the pic at 4000x3897 which was the default 20x30 on aperture2 and its not fitting good at all any suggestions or tips on this matter
I would go for the Print Preview....

Dependant on the Printer, most of them have a "Settings" page somewhere in the printer software that will allow you to alter what and how you print, stuff like border or border-less, quality of print, paper size, orientation, etc...
It should give you a "Preview" of the picture and how it will fit onto the page, and the option to go back and "Tweak" the settings if it doesnt look right.

What printer are you using, and does it have the print preview page?...
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Old 10-08-2009, 18:39   #7 (permalink)
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Re: Printing poster size......

Quote:
Originally Posted by Silver Dragon View Post
I would go for the Print Preview....

Dependant on the Printer, most of them have a "Settings" page somewhere in the printer software that will allow you to alter what and how you print, stuff like border or border-less, quality of print, paper size, orientation, etc...
It should give you a "Preview" of the picture and how it will fit onto the page, and the option to go back and "Tweak" the settings if it doesnt look right.

What printer are you using, and does it have the print preview page?...
I am ordering prints from a local store, you just go through their upload process and it shows you sizes w/ prices and previews of how they'll fit.
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Old 19-08-2009, 07:22   #8 (permalink)
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Re: Printing poster size......

I work in a lab and we have two options re: cropping. Fit or fill.

If you take the original, post-process and leave the cropping, could you ask the lab to FIT your image to the size you want? This would take the length (usually) and automatically adjust the height of the image without losing any part. Would mean custom framing however. The same would also work if you cropped it to your liking, and again ask them to FIT the image to a standard size.

The fill option takes your image to the length of the photo and usually crops an amount from the top and bottom to make it the specified height.

Hope that makes sense?
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