Changing resolution with digital photography?
I have a canon powershot sd600 digital camera. I take photos that are the highest res and then upload them to my computer. When I upload them and open them in photoshop, they say 180 resolution.
I need my images to be 300 dpi so I can have them printed. Is it possible to just change the dpi higher in photoshop or do I need to set something in the preferences when uploading my images so they will transfer at 300 dpi?
I’m finding this really confusing.
I need to take a photograph for an upcoming commission project. It will need to be at least 300 dpi and I need to print it at 20 x 30 inches. So I want to make sure I am uploading and doing everything right.
Please help. Thanks
Easy. Hit [CTRL]+[ALT]+[i] (that’s the letter “i”] to open the Image Size window. Look towards the bottom and you will see the little box showing the resolution of 180 pixels/inch. Just change that number to 300 and click OK.
You can not change the resolution set by your camera, but in the end, it doesn’t matter. Your 6 MP Canon SD600 will say that you have a 15.64″ x 11.73″ image at 180 ppi. My 6 MP Nikon D70s will say that I have a 10″ x 6.67″ image at 300 ppi. If you set your parameters to crop the SD600 image to 10″ x 6.67″, you will lose some of the bottom (or top) of the image, but you will wind up with a 6 MP image at something like 280 ppi. What I mean is, it’s all the same in the end.
The dpi is not going to be the problem, though. You will probably not be satisfied with a poster made from the small sensor in the SD600. I have a tutorial that tells you how to make a small test at home before you spend $20-25 on a poster only to find out that it looks horrible. For a lot of detail about making posters from digital images, please see this tutorial. Look at BOTH pictures and read all comments.
http://www.flickr.com/photos/samfeinstein/tags/poster/
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