It depends on where you are located, what priorities you have for the print, and whether your photograph is on film or in digital format.
The businesses below all do photo enlargements. Some offer more paper paper and size choices than others (e.g. canvas, fine art paper etc). A shrinking proportion do film-based (i.e. "wet" processing) printing, and these increasingly cater to professional photographers with fancy films and formats.
Assuming you have a digital image, you may want to consider the businesses below:
In the US, If you want to save money, try Costco ( http://www.costco.com/PhotoCenter/PhotoCenter.aspx ). They have centers in a variety of places.
If you want extremely high quality, definitely consider a professional lab such as Westcoast Imaging in California ( http://www.costco.com/PhotoCenter/PhotoCenter.aspx ). These Guys offer a huge range of choices, including film processing.
Giantprint in Australia also produce high quality prints, but specialize in larger-size photo enlargements ( http://www.giantprint.com.au ).
In the UK, consider Fotoview, who does film-based developing amongst other services ( http://www.fotoview.co.uk/ps_enlargement.asp ).
You might also want to checkout Acecam ( http://www.acecam.com ), as I did, which is an old site known to list reputable printers/photo centers.
I hope this helps a little :-)
There are many ways one can tell what a professional photo is. One can tell what a professional photo is by the quality of the photo and what camera was used to shoot the photo.
Wants to enlarge A4 paper size to A3 paper size.
Photographs are taken in a lot of places, but often professional photos are taken in a photography studio.
There are a few legal ways to reproduce a copyrighted photo: * Find the original photographer and have them enlarge the photo * Have the original photographer sign a copyright release, authorizing you to make copies * If the original photographer cannot be found, most photo labs will have a form that allows you sign off saying so and depending on the circumstances, they may make copies or enlargements for you A copyright on a photo can last up to 75 years. Anyone who takes a picture owns the copyright to that photo. The reason most stores will just turn any copyrighted professional pictures away is because the fines are so steep that it is not worth it to take a chance. Professional photographers take the time to set up for the picture, arrange the subjects, etc. so that is why they mark their pictures "Copyrighted." It's only fair that if you created something that you should be the one that gets paid to reproduce it.
B&H Video Photo is a pretty good choice
NO. Printers can only print. If the image has been scanned then there is software that can "enlarge" to a greater print size.Many copying machines have enlargement capabilities.
copy and paste it onto pain. Enlarge it. Then upload it again.
Professional quality photo printers will make your photos look terrific. To purchase one online, turn to websites like Digital Photo Pro and Professional Photo Printers.
There are many locations that can handle your printing and photo editing needs. Your local Walgreens, CVS, or FedEx would be a great place to start. Each of those locations can also enlarge your photos.
Photo engraving can be done professionally through a photo site. It can also be done in some of the professional photo packages if the user knows how to do it.
a scale factor of 4.5 is your answer
There are many companies, which offer professional photo printing, like Printed, DSColourLabs or BayPhoto. Alternatively, one can try photo printing by oneself. One just needs some photo paper and a photo printer, which are available cheap in eBay or Amazon.