re-sizing

I am trying to send some pictures to be developed and they are telling me that they are too big and to please resize - "change resolution."
I am using a 7d and the resolution is showing up as 5184x3456. I have the dpi set for 240 and would like to maintain the same quality. Can someone please help? I am using CS3 if that helps.
Nancy

Read the FAQ then post any questions you still have

Try changing it to 5000x3333.

Edsport wrote in post #10279044
Try changing it to 5000x3333.

That's incorrect. You should read the printing FAQ as well.

Nancy, what print size are we talking about here. You can leave the resolution at 240 but I would resize the image to whatever size you are trying to print. Image - Image Size....

ssim wrote in post #10279719
Nancy, what print size are we talking about here. You can leave the resolution at 240 but I would resize the image to whatever size you are trying to print. Image - Image Size....

240 is the default in ACR, from memory, and isn't optimal for prints. 300 is better. Maybe you should read the printing FAQ too

Please point me in the direction of the "FAQs" you are referring to. I read the one for Web posting but I want to develop these pictures.
TIA
Nancy

Tim linked it in his first post.
It is https://photography-on-the.net …/showthread.php​?p=3740438

To make it fast and simple: Multiply the sides (in inches) of the print you want by 300 and resize your image to those pixel dimensions. Example: 8x10 print > 2400x3000 pixels.

Found it guys...printing off right now....thanks again

tim wrote in post #10279100
That's incorrect. You should read the printing FAQ as well.

I had same problem and reducing the size to 5000x3333 worked for me so not sure why it's incorrect when it works...

Edsport wrote in post #10284950
I had same problem and reducing the size to 5000x3333 worked for me so not sure why it's incorrect when it works...

That could just take it under the maximum size that lab happens to accept, which isn't a standard. It also means two resize steps are being done on the image, rather than one.

Generally you should do a single resize to the ppi required. Most labs require 300 ppi, so if you want a 6x9" print that means 2700 x 1800 pixels. For 6x4 is 1800 x 1200 pixels. The ppi isn't really important, but some labs like it set.

This is why I say read the FAQ, to save me typing it every time someone asks

The image don't degrade by changing it to 5000x3333 so even if it's 2 changes it will not degrade any less than then single change you're talking about....

Any manipulation loses data. A resize is a major manipulation. In practice it's probably not visible if you resize twice then print 6x4, but your suggestion isn't a general solution, it's just something that worked for you by random change. Trust me, i'm a random know-it-all on the internet, we're never wrong

Well if you're a know-it-all then you would know that not every lab wants 300 ppi. Anyways, i think i'm just wasting my time here. I'll move on...