Blowing up an image.

Johnny Thunder

Johnny Thunder

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John
Edit My Images
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I hope that is the correct term.:)


I have an image which is 4132 x 2848 @ 240ppi.
After cropping, it is 4132 x 2316.

How do you work out how big you can blow it up for a print or canvas?


Cheers.


John.
 
Not sure what others do so this question interests me also. What I do is zoom into the photo in photoshop to see what it looks like at say 100% this is almost 3x the height of my screen and 6x the width. !!! if it looks ok at 100% it should print well at whatever size that is about A1 / A2 ?
 
I use Genuine Fractals which is a add on for photoshop to blow up or shrink images.
 
My image before crop is approximately 18" x 12" I think.:thinking:

If I double the size of my image for print, it would be 3' x 2' at 120dpi.

Is this reducing the quality of the print too much? Is there a dpi 'rule' we should try to stick to?


Cheers guys.
 
Normally 150dpi is considered the lowest for normal useage. The thing to consider is what will be the viewing distance, Constables HayWain is 6' x 4' I think you will agree it's a great painting, but look at it from 12" away and it is totally different story. Pixel peeping is not a National Sport, so your 3 X 2 print will probably be fine at normal viewing distances.
 
most printing is done at 300dpi - divide 4132 by 300 (dpi) and you can print to 13" use 200dpi you can prnt to 20" etc - just a rough guide - you can probably go larger without loss owing to greater viewing distances of large print.
 
mant01 said:
I use Genuine Fractals which is a add on for photoshop to blow up or shrink images.
Click to expand...

If u have Photoshop CS or higher, just resize your image, it's faster than fractals, and gives the same output without having to spend more money. Oh Photoshop is faster as well...
 
Sorry guys. Just one more part to this. Does printing to canvas alter anything with regard to ideal sizing?
 
Shouldn't really do, and printing on canvas you get get away with larger prints. Depends if you are going to get a canvas with the picture wrapped around the folds or just printed on the viewing side. If the former, you will need to allow for some space on all 4 sides.
 
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