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Thread started 18 Nov 2006 (Saturday) 16:22
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ken ­ lang
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Nov 18, 2006 16:22 |  #1

Hi guys, I have been asked to supply one of my pictures for a local magazine cover, they have asked for an (A4) portrait at a minimum 300dpi resolution. is this possible from a photograph taken as a jpg file on high quality at 8 mp. looking at the image size on my photoshop program, the image is:width 2304 pixelsheight 3456 pixelswidth 81.28 cmheight 121.92 cmresolution 72 pixels/ inchhelp




  
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chtgrubbs
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Nov 18, 2006 17:05 |  #2

Is your original picture vertical or horizontal? If it is vertical, I see no problem, but if the original is horizontal, it must be cropped to change it to vertical. When you crop it it will only be 5x7.6 at 300 ppi. It would then have to be up-rezzed rather substantially. I would contact the magazine and see what they would like. They may prefer you to send them the image as-is and have the pre-press guys do the cropping and uprezzing themselves.




  
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SkipD
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Nov 18, 2006 17:23 |  #3

ken lang wrote in post #2281821 (external link)
Hi guys, I have been asked to supply one of my pictures for a local magazine cover, they have asked for an (A4) portrait at a minimum 300dpi resolution. is this possible from a photograph taken as a jpg file on high quality at 8 mp. looking at the image size on my photoshop program, the image is:width 2304 pixelsheight 3456 pixelswidth 81.28 cmheight 121.92 cmresolution 72 pixels/ inchhelp

The embedded 72 pixels/inch number means absolutely nothing.

What matters is the pixel count of the image that you are going to use (after any cropping, etc.) and the dimensions of the intended print. 3000 pixels width, for example, would allow a 300 pixels/inch (or better) print up to 10 inches wide. It's that simple.


Skip Douglas
A few cameras and over 50 years behind them .....
..... but still learning all the time.

  
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MJP
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Nov 18, 2006 18:52 |  #4

I think some people still confuse about the 72dpi including my friend..Skip is right about the embedded dpi is nothing...the only it matter is when you are sending your picture to the printer..other term for that is ppi....


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puttick
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Nov 18, 2006 19:24 |  #5

This is dead simple. First you need to get your image cropped to the correct aspect ratio, as A4 is 8.25 in x 11.7 in, so you need to use the crop tool and enter these values. At the same time, enter 300 in the dpi box. Make your crop. there's your image to send to them, corrctly sized and correct resolution.

Alternatively, go to the image size menu. Tick the resample box. Set the print size at say 8.5 in x 13.5 in (this corresponds to the aspect ratio of a dSLR frame) and the dpi to a bit over 300, say 310. Click OK. this will give you an image a little bigger than A4 that they can crop to suit the cover.

Good Luck

PS I have had a magazine cover from a 3MP image, resized to 300 dpi in this way.


Nigel Puttick
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Jim_T
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Nov 18, 2006 22:29 as a reply to  @ puttick's post |  #6

A4 is a metric size, but if you convert it to imperial, an A4 image is 8.27 inches by 11.69 inches.

Your publisher wants there to be 300 pixels for each inch. So just multiply:

8.27 inches X 300 pixels = 2481 pixels

11.69 inches X 300 pixels = 3507 pixels

You must give the publisher an image that is at least 2481 x 3507 pixels.




  
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ken ­ lang
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Nov 19, 2006 15:30 |  #7

Thanks to you all for your contributions, I'm sure this will help a lot. Regards Ken




  
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