Picture/Print Resolution

[nbeinhac]

Confused about picture resolution.

I am taking pictures with my new 5 meg TZ1 at max quality – 2560x1920 pixels.

I took pictures on my old 4 meg Canon PowerShot S410 at its max quality of 1395x1029 pixels.

When I review the picture information in either Graphic Converter or Preview (I use a MAC G5), I find that the Canon pictures are shown as 300 dpi while the TZ1 pictures are only shown as 72 dpi.

Since I crop and print out pictures up to 8x10, it is my understanding that 300 dpi is the desired image resolution setting for my color inkjet printer.

I do not understand why I do not get a 300 dpi picture with my TZ1.

Will I get a higher quality print using the Canon PowerShot?

Thank you for your help

nbeinhac

[Sintares]

Thats just a default setting and means nothing.

You will want to crop the picture as the aspect ratio of the camera is different to the photo, so crop and get the correct detail where you want in the pic, then decide what size of photo to print and check the ppi .

Set the correct image size ie 8x10 or whatever and the ppi will reset automatically .

Or just set the ppi as 300 and see the image size transform to 2560x1920/300 => 8.53 x 6.4

[John_Reed]

The "dpi" setting on your EXIF file means nothing when it comes to printing an image, just like the other poster said. If you go to print an 8X10 from your TZ1's 1920X2560 pixel image, the printer driver will automatically divide up the pixels to match the print size. 1920 pixels in the "8" direction would print at 240 pixels/inch, which would constrain your "10" direction to 2560/240 = 10.67 inches, which either you or the printer driver would crop to make an even 10 inches in that direction.

[ajaynejr]

Regardless of what the editing or viewing program calls it, you are viewing the image at about 75 DPI on your computer screen and can get resolution in the 300 to 600 dpi range depending on the original source, given a good printer, and after ink smearing and bleeding on the finished print. By zooming (thus physically enlarging) the image on your computer screen you can get an idea in advance of how much detail there will be on the finished print.