Showroom Prints

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Robin
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I have been asked to produce some prints for a car showroom, based on images that I already have.

My question is please, one of the selected image is only 1.2MB (1700 x 800 pixels @ 241dpi) and the required image needs to be about 2M wide. Is this asking too much of the original image?
If not, any recommendations where should I take it to be printed (ideally onto acrylic)?
 
...I should add that it will be viewed from a distance of about 6-12ft away.
 
OK, the image is 1700 pixels wide and you need it to be 2m across. It comes out at 21 PPI.

(Of course the printer will have to print a lot more than 1700 pixels in that space. But you only have 1700 pixels of actual data, and that's what counts.)

21 PPI isn't a lot. But it's not necessarily a total disaster. The oft-quoted figure of 300 PPI is the resolution of the average human eye at a viewing distance of about a foot. At 6 feet it's 1/6th of this which is 50 PPI; at 12 feet it's 12th which is 25 PPI.

So if you upside your image carefully, it could look quite decent when viewed from a distance of 12 feet. But it won't be so good from 6 feet.

You can check it by making a test print. 21 PPI on an A4 page is about 250 x 180 pixels. So crop out a portion of the image which is this size, print it at A4, and view it from 6-12 feet away.
 
speak to your printer as the software used to print ie the RIP they use will upscale / supply the printer with the correct data required not a generic number like 300 ppi, and 99% of the time will produce a better image than one upscaled then printed.
 
So then, I could carefully upsize the image's DPI to say 600 (10% at a time), or just leave it to the pro printer to sort out. I've read that the latter is probably preferable, so is there a local printer in W. Wilts that anyone might recommend?
 
BTW, thanks for responses so far - all input gratefully received.
 
I would put the question to yuor printer. They'll give you the most appropriate advice for what they can achieve from what you have.
 
Thank you for your input. Any recommendations for printers in or around West Wiltshire please?
 
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