View Full Version : 30D image transfer question
photoflag
6th of August 2006 (Sun), 22:37
Hello to all!
Thanks to a burglar who stole my Nikon D70's and all the lenses I now own a Canon 30D which I took out to test this weekend.
I have Photoshop Elements3 which manages the image transfer process, even after installing the Canon software.
When I opened up the Canon images in Photoshop they were the standard pixel dimentions but at a resolution of only 72PPI making for a huge physical image.
All the thousands of images I downloaded from the Nikons always displayed at 300PPI, which is what I want.
Since only the camera and the Canon software are new to the process, I am at a loss to understand the change in resolution. Can anyone explain a)what happened and b) how to prevent it from happening again.
Confused!:confused:
Salleke
7th of August 2006 (Mon), 03:56
Hello to all!
Thanks to a burglar who stole my Nikon D70's and all the lenses I now own a Canon 30D which I took out to test this weekend.
I have Photoshop Elements3 which manages the image transfer process, even after installing the Canon software.
When I opened up the Canon images in Photoshop they were the standard pixel dimentions but at a resolution of only 72PPI making for a huge physical image.
All the thousands of images I downloaded from the Nikons always displayed at 300PPI, which is what I want.
Since only the camera and the Canon software are new to the process, I am at a loss to understand the change in resolution. Can anyone explain a)what happened and b) how to prevent it from happening again.
Confused!:confused:
Don't worry about the 72 DPI. All Canon DSLR's have that.
It's not important if it is 72 or 300 DPI.
Shoot away and have fun. Good luck.
gkuenning
7th of August 2006 (Mon), 04:09
There is no change in resolution; it's just how your computer is deciding to display the image. Digital photos aren't taken at a certain number of pixels per inch, they just have a certain number of pixels across and down. For example, you might be getting 3000 pixels across (I picked that number out of the air, but it's roughly right). Your screen probably has only 1600 pixels across; Photoshop reduces the 3K to 1600 or even 800 to make the entire photo fit on the screen.
Unfortunately, the cameras contain EXIF "hints" that suggest to Photoshop that it should choose a certain display size. That's why your Nikon and Canon generated different sizes.
The simplest solution is to just reset Photoshop's display options. A more difficult one would be to use an EXIF manipulation tool to reset the recommended resolution in the image's EXIF header. But I ignore those, since I think they're a silly idea from the start.
photoflag
7th of August 2006 (Mon), 07:02
There is no change in resolution; it's just how your computer is deciding to display the image. Digital photos aren't taken at a certain number of pixels per inch, they just have a certain number of pixels across and down. For example, you might be getting 3000 pixels across (I picked that number out of the air, but it's roughly right). Your screen probably has only 1600 pixels across; Photoshop reduces the 3K to 1600 or even 800 to make the entire photo fit on the screen.
Unfortunately, the cameras contain EXIF "hints" that suggest to Photoshop that it should choose a certain display size. That's why your Nikon and Canon generated different sizes.
The simplest solution is to just reset Photoshop's display options. A more difficult one would be to use an EXIF manipulation tool to reset the recommended resolution in the image's EXIF header. But I ignore those, since I think they're a silly idea from the start.
:confused:
Okay...
If I understand what you are saying, the resolution being displayed has no effect on the quality of the original image being transfered from the camera and stored in the computer.
Right?
Jon
7th of August 2006 (Mon), 14:15
Right. The image is always x pixels by y pixels. The ppi only affects selected output devices that bother to look at that particular setting.
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