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Photo zoom pro
After printing some photos for a client 4800mm x 1200mm and 2200mmx2200mm I realise that i need some decent resizing software, the original photo was taken with an old digital camera. To be honest we were pleased with the result but feel that we could definately do better – at the moment all resizing is done within photoshop. So, I would be interested to know what others use, is Photo zoom pro any good and should i expect to get a better quality image after resizing than i can with photoshop. Any thoughts would be much appreciated.
Mart. -
6 Replies
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I’m by no means an expert but you can get what you don’t have.
All resizing software does is adds pixels of the colour it considers to be correct using interpolation so you won’t get a better image when it’s blown up to a larger size than the original.
http://www.interpolatethis.com
may be worth a look I just googled it……..
Prob others who are into digital in a big way can help more.
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the RIP on a decent printer does all the upsizing for you… so when you use a layout program you just work with the photo as it comes.
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I use Photo Zoom and I do think it is better than just resampling up. I don’t use Photoshop though only Corel Suite so can’t compare.
Alan D -
if i am just sampling up to hide pixels then do it in smaller steps not one big dollop else as Dave says the rip should do it and always amazed by colour rip for this.
chris
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You have 2 options in terms of hiding pixelation and thats to interpolate (and one of the best interpolating programs is free ware – irfanview – http://www.irfanview.com – it’s Lanczos method is regarded as tops)
The other option is to apply a slight gaussian blur which will blur the pic but smooth it significantly.
Depending on viewing distance , you really need about 50-100 pixels per printed inch for stuff like nearish signage and wraps and can go as low as about 25 for banners or even down to 5-10 for billboards.
Working at 25 pixels per inch (10 pixels per cm) the 2.2 x 2.2 m print should have been 2200 pixels x 2220 pixels , if this was a RGB image , the size would be 2200x2200x3 Ie about a 14meg file.
Interpolation or upsampling will only work to a certain extent , to have taken lets say a 300 x 300 pixel pic and upsampled it to 2200 x 2200 would not result in anything really usable. -
I use photo zoom pro all the time.
Unlike Corel or photo shop I’d imagine, photo zoom gives you a lot of different sampling methods, so you can preview the results pretty well before you print.
Irfanview is a good program (I have it too), but photo zoom pro is worth the financial investment.
The software was originally designed to enlarge medical pictures, and the clarity it gives an enlargement is the best I’ve seen.
Download a trial from the shortcuts site and try it yourself.
Cheers
Shane
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