File :-(, x, )
Anonymous
Hey /p/.

As an advertising design major, I recently purchased a Canon 40D to do my own photography for projects/clients.

My question: Is there a way to get the Canon 40D to shoot at 300 dpi? I'm already shooting RAW, but the images are the default 240 dpi.

Help is much appreciated :) (and the attached picture isn't mine, I just like it)
EXIF data available. Clickhereto show/hide.
Camera-Specific Properties:Equipment MakeCanonCamera ModelCanon EOS 30DCamera SoftwareAdobe Photoshop CS3 WindowsImage-Specific Properties:Image OrientationTop, Left-HandHorizontal Resolution72 dpiVertical Resolution72 dpiImage Created2008:06:30 17:01:06Exposure Time1/160 secF-Numberf/11.0Exposure ProgramManualISO Speed Rating250Lens Aperturef/11.0Exposure Bias0 EVMetering ModePatternFlashNo Flash, CompulsoryFocal Length28.00 mmColor Space InformationsRGBImage Width500Image Height750RenderingNormalExposure ModeManualWhite BalanceAutoScene Capture TypeStandard
>> Anonymous !nzFagDPRLs
>>284135
Isn't DPI just a setting for the display of the image? Your not actually removing or adding pixels, your just displaying or printing them furthur or closer together.
>> Anonymous
>>284135
Using a higher DPI setting for an image will make its physical print size smaller. If it turns smaller than you need it to be, then you must stretch it a little bit. What you've been told is true, making it larger will produce aliasing, and your image will be slightly softer, when you look at it up close. I guarantee, though, any artifacts resulting from this tiny bit of stretching will be unnoticeable.

Feel free to stretch it a bit, it won't do nearly any harm, such are the benefits of using a good camera (in comparison to a point and shoot).
>> Anonymous
>>284137
yes
>>284123
christ I hope this is a troll
>> Anonymous
your camera doesn't control DPI, the camera just provides the pixels - when you set DPI in your program you are telling it how large to print.

changing the DPI should not produce any distortion as long as your printer can print in the specified DPI. this doesn't mean it will look good up close - if you print your picture at 30 DPI it will be 10x bigger in each direction but your pixels will also be HUGE
>> Anonymous
>>284142
It's probably not, actually. My classmates ask our teachers the same thing all the fucking time. The teacher is often as clueless as the students, saying shit like this:

"a 100dpi picture will stretch and look like crap, but if it's shot at 300dpi, you can keep stretching it and stretching it and it will still look good!"

My classmates take her word as gospel. I can't facepalm enough.
>> Anonymous
>>284135
>but making it larger will always distort it a little. Am I wrong about this?

Yes and no. First of all, 300 DPI is going to be a smaller print from the same file than 240.

Second, ever seen a pointillist painting? Printing is like that. DPI is just dots per inch- if you're printing for something people will be looking at close up, you need a lot of dots per inch so people can't see them. 300 DPI (or higher, but that doesn't matter) is ideal for 8x10s, 5x7s, and all those other usual small print sizes.

If you're printing for a poster, though, it depends on the size- no one is going to look at your ten foot wide poster from a few inches away. So you can get away with much less DPI with no visible "distortion," because the eye just blends it together.

Say you've got a file 4000 pixels on the longest side, but to get the DPI you want you need 8000- doubling that will decrease the quality.
>> Anonymous
dude... you have a constant number of "dots" and you are changing the "dots per square inch"which only effects the size of the image. So yes, increasing DPI will make your print size smaller, but it won't do anything to make it blurry.

It is not as though you are taking an image of the internet and resampling it to make it larger. Also, make sure when you are changing the DPI, you have not got it set to some resampling mode.
>> Anonymous
Btw OP, is the picture yours? If not, do you have sauce? I want to copy this technique.
>> Anonymous
>>284123
in photoshop:

image > image size
then either remember one of the width/height values (has to be in pixels) then change the DPI to 300, doing so, photoshop will also upscale the image, then just enter the value you copied, this will make the image stay the same size (in pixels) but it iwll have 300 dpi.

I hate the fact that photoshop automatically wants to resample and not just change teh DPI value.

Corel PhotoPaint (yes really) has it so, that you can change the DPI without affecting the image, so it takes less work (but then again, it's Corel and use is in that)