Photo Editing & Graphic Design forum

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Megapixel, Resolution Question

by jodcha / June 11, 2007 4:47 AM PDT


I have a 7 megapixel camera.
After taking pictures and opened it in Photoshop, the pictures are in 72 dpi thus image size is BIG - 42x32 inch!
Is this considered as low-res picture?

I need to submit some of these photos for work and they required min. 300 dpi.
Can I just change the resolution in Photoshop>Image>ImageSize?
I am thinking to uncheck ?Resample Image? and change the resolution to 300.

Is this the right way to do?

Is there a way to set the camera to take higher resolution (thus smaller in image size) pictures?
The only setting I can find is the megapixel option.


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Collapse -
DPI is ... well not meaning for this. But...
by R. Proffitt Forum moderator / June 11, 2007 5:04 AM PDT

From memory I can change it with IRFANVIEW or other tools so this "data field" meets their specs. Think carefully about this and why it's not going to affect the picture in any way, shape or form.

IRFANVIEW is free and found with


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not exactly sure what the previous poster meant...
by kcoppock / June 15, 2007 1:48 PM PDT

...but yeah, you've got the right idea. Unchecking "Resample Image" won't affect the image data at all, it just changes the physical dimensions, and increases the amount of dots PER the specified dimension (in, mm, etc.)

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