Online Digital Photo Printing Services & Support

General | Digital Photography Explained | Tips | Downloads | Tutorials

	In order that our customers get the best out of their digital images we have assembled this page. Click on a topic to read more.
	If your query is not answered here, please do not hesitate to contact us via email at info@colorama.co.uk.
	File Formats Image Resolution Printing Methods & Paper Aspect Ratio
	File formats
	We accept jpeg, tiff and bmp file formats in RGB mode. If your files are in CMYK mode please convert them to RGB before uploading them. ( Please note; all digital cameras operate in RGB mode.)
	Image resolution
	When you assemble your order, our software will present you with a warning if the resolution or image is too low for that print size.
		A green tick light will indicate sufficient resolution and will result in a good quality print.

		A red triangle will indicate insufficient resolution and will result in a poor quality print. In this circumstance we would advise our customers to select a smaller print size in order to compensate for the lack of pixel information in their image file.

	Printing methods and paper
	For all our small format work, 4 - 12" we use Agfa d-lab.2 machines operating at 400 dpi. We use Kodak Ektacolor Edge photographic paper.

	For our large format work, we use a Polielettronica Laser Lab machine operating at a resolution of 254 dpi.

Aspect ratio

90% of digital cameras capture images which have a different aspect ratio, height-to-width
ratio, than conventional cameras.
The aspect ratio of digital cameras is 3:4, (similar to that of your televsion or pc monitor),
whereas conventional cameras work on an aspect ratio of 2:3.
Therefore if you choose a conventional print size, for example 4”x6”, your image will either
be cropped or have white borders added to the sides of the print. Our software gives you
the option to crop or add white borders to your image.
If you choose a digital output size, for example 4”x5.3”, no cropping or borders will be
required.

DIGITAL PRINT SIZE GUIDE
Print Width	Print Length		Camera Resolution Setting (Megapixels)
Print Width	Digital Camera 3:4	35mm Scan 2:3	Print Good Quality	Print OK Quality
4" x	5.3"	6"	1	n/a
5" x	6.6"	7.5"	2	1
6" x	8"	9"	2-3+	2
8" x	10.6"	12"	3+	2-3
12" x	16"	18"	4+	3