Canon 7D Photo Resolution...

[TheYard]

so i was editing in Lightroom, draged a photo to photoshop to do some pp... noticed that the image was only 72 dpi.
where is the step to set the images at 300dpi?

is it in lightroom as im importing??? or in photoshop as im importing?? where is it dropping to 72?

thanks in advancce

[Tom]

Any picture can be 300 dpi or 72dpi. What is the resolution? The actual pixel count?

3600 px by 2400 px is 12" by 8" at 300dpi. It is also 50" by 33" at 72dpi. Exact same thing.

[TheYard]

so for printing images should they be resized to 300?

thanks again

[Tom]

It doesn't matter. It is the same thing.

[auddii]

Not that I understand much of any of this, but all the printing places I had looked at online recommended 300dpi.

[rockpics]

When printing at home I change the dimensions to the size I want without resampling so the image prints out at the size that I expect.

[Tom]

Originally Posted by auddii

Not that I understand much of any of this, but all the printing places I had looked at online recommended 300dpi.

It doesn't matter at all. 12x8 at 300dpi is the exact same thing as 50x33 at 72dpi. The printer is only looking at the pixels, and doesn't really care about what dpi it is. A printer would rather have 50x33 at 72dpi than 2x3 at 300dpi to print a 10x15" print.

[venchka]

Originally Posted by auddii

Not that I understand much of any of this, but all the printing places I had looked at online recommended 300dpi.

I have used Mpix once. They said 240 was plenty. Epson printer legend says 360 while Canon printer legend says 300.
Apparently, there is no uniform standard. 300 works for me directly from Lightroom on a Canon printer.

[venchka]

Originally Posted by TheYard

so i was editing in Lightroom, draged a photo to photoshop to do some pp... noticed that the image was only 72 dpi.
where is the step to set the images at 300dpi?

is it in lightroom as im importing??? or in photoshop as im importing?? where is it dropping to 72?

thanks in advancce

When you open a file in Photoshop directly from Lightroom, you need to set up Photoshop's print parameters. One of the things you tell Photoshop is the DPI for printing. It's been ages since I did it. Someone else will have to talk you through the set up.

[rockpics]

I used to religously upsize my photos to 350 dpi before printing on my Epson 3800. I found out at an Epson seminar that the print driver will do the upsizing if it is not done before hand. I have not seen any difference between prints upsized by Photoshop (my editiing software) and those done by the print driver. The 7D has plently of resolution for most print sizes without upsizing, but older cameras may not.

[TheYard]

Originally Posted by rockpics

I used to religously upsize my photos to 350 dpi before printing on my Epson 3800. I found out at an Epson seminar that the print driver will do the upsizing if it is not done before hand. I have not seen any difference between prints upsized by Photoshop (my editiing software) and those done by the print driver. The 7D has plently of resolution for most print sizes without upsizing, but older cameras may not.

good info

thanks all

[Dobick]

as thomas said -- dpi is not a measure of anything.

When dealing with digital photos and prints, the only thing that matters is pixels per side.

If there are printers (meaning shops, not physical machines) out there that are first taking the dpi instructions and then down-rezing the image to match the size output, without adjusting the image, then I would avoid them like the plague, but none of the ones that I know of do that.

Now if you send an image at 8x10 at 72 dpi, then the print is gonna look like crap. Not because of 72 dpi, but because you are trying to make a 10 inch print out of a file that is only 720 pixel long.

When calculating how many pixels the long side needs to be in order to have a good print, the guidance has always been 300dpi (some will tell you the minimum required is 240)
not a setting as much as it is a guide. so if you want a good 10 inch print, then the file needs to be 3000 pixels long.

[TheYard]

Originally Posted by Dobick

as thomas said -- dpi is not a measure of anything.

When dealing with digital photos and prints, the only thing that matters is pixels per side.

If there are printers (meaning shops, not physical machines) out there that are first taking the dpi instructions and then down-rezing the image to match the size output, without adjusting the image, then I would avoid them like the plague, but none of the ones that I know of do that.

Now if you send an image at 8x10 at 72 dpi, then the print is gonna look like crap. Not because of 72 dpi, but because you are trying to make a 10 inch print out of a file that is only 720 pixel long.

When calculating how many pixels the long side needs to be in order to have a good print, the guidance has always been 300dpi (some will tell you the minimum required is 240)
not a setting as much as it is a guide. so if you want a good 10 inch print, then the file needs to be 3000 pixels long.

ok forgive my ignorance, since i took the photo straight from camera to LR3, then sent to print from file, @ 16x20, the print is really grimey, not sharp at all.

should i be sizing each image to whatever size i am going to print?

[rockpics]

I just converted one of my raw files from my canon 7D and brought it into photoshop to see what size it is. It opened into photoshop as 14.8 inches by 9.8 inches at 350 dpi. When I resized without resampling so that the smallest dimensions was 18 inches, the larger dimension was then 27 inches. The dpi was 192. I am fairly certain that if I wanted an 18x27 inch print I could send the file to the printer with no upsizing and it would be fine, but if there is any doubt about the quality you willl get, go ahead and resample so that the image stays at 350 dpi.

[Flores]

Dagger, was it a raw file or a jpg straight out of the camera? the 7D raw files tend to need a bit of post processing work to have them look their best.

you shouldn't have to be changing image sizes in LR. it should be handling everything between your image and the printer.