AboutScott Valentine Expertise Most anything about digital post processing (Photoshop, etc), effects, and image restoration, some technical information about digital imaging systems, light and electron microscopy, optical physics and image analysis. I can help with shooting basics, lighting setups, and getting the most out of your digital camera. I am also an 'expert' here for Photoshop (Computers/Technology > Software > Graphics Software > Photoshop).
Experience I've been an image analyst and advanced amateur photographer for over 6 years. I run an Adobe user group, focusing on digital media, and have lectured on digital image capture systems. Currently, I am an administrator for a rather large instructional Photoshop forum
Organizations Adobe User Groups, National Association of Photoshop Professionals, Advanced Imaging Specialists
Education/Credentials Bachelor of Physics, University of California, San Diego
Awards and Honors Winner: Best in Show and several category first place awards - Imaging Professionals of the Southwest Print Competition (multiple years)
Expert: Scott Valentine Date: 11/5/2007 Subject: Getting High Resolution Photos
Question I need to get high resolution photos of my paintings in order to have them made into large-sized art prints. I've been photographing the paintings with my camera (a Cannon Digital Rebel) and importing the images into Photoshop. Eventhough I have the camera setting to "Large - Low Compression," when I import them, Photoshop tells me that they are only 180 dpi. My printing company tells me I need at least 300 dpi. How do I get this? Do I need a better camera? (I can't really afford one). Is there a setting in Photoshop that automatically makes all images coming from my camera 180 dpi - and is so, how do I change it? I know that my camera has a RAW file setting, do I need to use this to get my 300 dpi images? Thank you!!!!!!!!!!!!
Answer Thanks for your question, Victoria. First, I do recommend you shoot in RAW format whenever possible; this will give you the best possible resolution for your camera. Next, here are some links that should help clarify resolution issues...
Depending on the type of print (size and medium), you may need to consider either a higher resolution camera or hiring a professional to make scans of your paintings. There are a number of factors to think about, including print media, ink type, viewing situation and distance, and longevity. Each of these can pull you in different directions, and each has its own pros and cons.
I recommend you consult with your printer about your exact needs, and determine the best balance of price and features for you. If you are able to produce the resolution and scale required from your Canon Rebel, then there is no reason in the world to change. But if you are trying to produce 10-foot archival reproductions for sale or gallery hangings, you will need a professional repro house to do the scans (and you are likely to run into the thousands of dollars for such efforts).
That being said, scanning may still be a good solution for you, if your paintings can be captured that way. There are a variety of options, some quite cost effective, but again your printer will be the best resource for information. Make sure you have a good relationship with your printer - they should be able not only to answer all your questions, but anticipate those you've not yet asked. They should also be patient and help you understand your options, not just what they want to sell. Often times, a good printer will help you find other providers that better suit your needs.
The links I provided should give you all the information you need for your specific question. If you need some clarification, or have further questions, I'll be more than happy to help!
