Question about Sony Mavica MVC-CD400 Digital Camera

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Messed up CD400 resolution

Okay, my CD400 was taking pics at a 300 resolution but now it takes pics at 72!!!! Why is that. I'm doing a photoshoot on monday and i need to know! Please help me, thanks, molly

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Re: Messed up CD400 resolution

Hi Molly, The 72 ppi figure is merely an arbitrary starting point used by most image editing software. I've known others to use 300 as a default, e.g. Paint Shop Pro last time I looked at it. Why it should have changed I can't tell at this point, unless you've changed your software; but it's not important. The figure is meaningless until you want to *print* your images, and even then it's best to just set print size *without* resampling the image, and let the resolution look after itself until you have a need for very large prints. To see what your camera is capturing, the essential figure you need to be interested in is the images' *pixel dimensions*; and in the case of the CD400 they should be 2272 x 1704 at the camera's full res. setting. (Actually, "resolution" is an unfortunate term, in its popular usage. Resolution really describes how thinly or densely the same pixel count is mapped over the intended physical output size.) Changing the print size *without* resampling the image will cause the resolution figure (72, 300 or whatever else it might be) to change inversely with the print dimensions, but will not change the overall pixel dimensions of 2272 x 1704.

Posted on Sep 13, 2005

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Hi i have an Olypmus UZ800 and it takes only 72 dpi photos, how can i change to 300 dpi, i must insist that i use FINE picture quality


Please don't confuse the input resolution with the print resolution. DPI controls how many dots per inch are printed. It has nothing to do with how the picture is taken, that's controlled by the input resolution (also called image size). The image quality has nothing to do with either, it controls how much the image is compressed before being stored.

Input resolution (image size) is controlled by the "IMAGE SIZE" entry in the Shooting menu. 14 megapixels is the best this camera can do.

Image quality is controlled by the "COMPRESSION" entry in the Shooting menu. FINE is the best quality, least compression.

The DPI is controlled by whatever program you're using to print your picture. Were you to print a 14-megapixel picture at 72 DPI, you would get a picture that's almost 5 feet by 4 feet. Were you to print the same picture at 300 DPI, you would get a picture that's about 14 inches by 11 inches. If you wanted to print a 6 inch by 4 inch picture, you would have to print at about 700 DPI.

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Set your camera to take pictures at the maximum megapixel level. Later, if you need to lower the resolution of your pics for whatever purpose, you can do that in any photo-editing program.

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Change 72 dpi to 300 dpi


Your camera cannont shoot at either 72 dpi or 300 dpi. It shoots at whatever resolution you have it set for. Dpi (dots per inch) is a print specification, denoting how large (or small) your pictures are printed.

The DSC-W100's highest resolution is 3264x2448. Printed at 72 dpi, it can generate a print bigger than 40x30 inches, albeit a bit grainy. Printed at 300 dpi, you can generate 10x8 inch prints.

Again, dpi is a measure of how you print pictures. It has no bearing on how you capture images with your camera.

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Hi - When talking about resolution in digital photography there are two main meanings.
One is the "pixel count resolution" and the other "embedded resolution". So for example your camera could record 2272*1704 as the actual pixel count resolution and set 72 as the embedded resolution that tells other software (for example photoshop) what the intended use of the picture will be. 72 ppi is the default for web pictures. You can change this in photoshop by going to the "Image" tab & select image size. The window that opens will show you the pixel dimensions i.e. pixel count resolution and the document size & resolution 72. You just change it in your software to 300 for printing. In Photoshop you can change the default to 300 by going "edit", "preferences", "units & rulers" and setting the values for "new document preset resolutions".

So for your camera the embedded resolution is 180 which you can only change in your PC software.

This is a complex subject, I recommend looking at the following web page:

http://www.fotofinish.com/resources/centers/photo/resolution.htm

Please take a moment to rate this solution & let us know if the information given was useful to you - Good Luck!

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