DPI Question

[MT37]

I'm curious if there is a way to change the DPI on my Canon Rebel XT.

I would like to change it to 300 if possible.

Thanks.

[Grimace]

I'm curious if there is a way to change the DPI on my Canon Rebel XT.

I would like to change it to 300 if possible.

Thanks.

DPI is for printing. You want to change the pixel count on the Rebel to the highest possible setting. Set it to L (large) or RAW. Dividing the pixel count [ex. 3600x2400] by 300dpi printing gives you the largest size you can print at that [print] resolution [12x8].

[MT37]

Ah, right. I always shoot Large or RAW. So I would have to change the DPI in Photoshop? I have noticed all my pictures are 72 DPI.

Sorry, I'm trying to figure it out so I can print some of my photos at 300 DPI.

Thanks again. I'm sorry if I'm being a bother.

[-hh]

In Photoshop CS2, with an image open:

Go to IMAGE menu

Halfway down, click on "Image Size..."

In the dialog that opens, it should be:

Pixel Dimensions:
Width (value)
Height (value)

Document Size:
Width (value)
Height (value)
Resolution (value) <--- you'll want to change this one to 300

Then three checkboxes:

[ ] Scale Sizes
[ ] Constrain Proportions
[ ] Resample Image <--- but watch out for this box. You probably don't want it checked

----



When importing in RAW, look in the bottom left: Space, Depth, Size, Resolution (value).
Change the last one from 72 to 300 and you should be set.





-hh

[MT37]

Thanks a lot!

[CanadaRAM]

To clarify:
you take pictures in pixels -- so a 3000 x 2000 file would be 6,000,000 pixels or 6 megapixels.

How large you print this is controlled by your printing software and choices.

At 72 pixels per inch resolution (conventional monitor screen resolution), it would be 41 inches by 27 inches

The same collection of 6M pixels at 300 pixels per inch resolution would be 10 inches by 6.6 inches

[Abstract]

Be careful. There's a difference between DPI and ppi (pixels per inch). You want 300 ppi, but the DPI is more of a printery thing that you don't take care of in your end.

[MT37]

Alright, everyone has been a great help. Thanks again.