Calibrate Photoshop

First things first, you’re going to want to make sure Photoshop is calibrated properly. This will allow you to view your photo at actual print size on the screen. To do this, you’ll want to find out what your screen resolution is, and then make the change in Photoshop’s settings.

Step 1: Measure the width of your screen

Measure your laptop or pc screen horizontally in inches. You can find this information in the owner’s manual, on the manufacturer’s website, or you could even just measure it yourself.

Step 2: Find your screen’s resolution

Next, make sure your monitor is in native resolution (if you have a retina display, make sure it’s set to the native resolution and not scaled up or down).

Step 3: Do the Math

Take the length of your screen horizontally in inches and divide it by the number of pixels horizontally.

Step 4: Change the Settings in Photoshop

Now, head over to Photoshop, and find your “Units & Rulers” section. This should either be under Photoshop > Preferences, or Edit > Preferences. Next to “Screen Resolution,” put in the PPI that you just calculated.Hit save!

Step 5: Check It Out

Now, open a photo in Photoshop, and view the print size to see what it will look like. To view the current print size go to View > Print Size. Make sure it’s in inches. This is what your image will look like when it’s printed. If you don’t see a ruler, enable it by going to View > Rulers and selecting it. The inches on the ruler that appear on the screen should represent an actual inch – you can verify this with an actual ruler to make sure. If everything lines up, congratulations! You’ll be able to view your images in actual print size now.

Change the Image Size

Ok! We’ve calibrated Photoshop. Now, let’s see how we can resize an image for print.

Here’s a look at how you can resize an image to a 6×4 print

You want to make sure the images that you’re printing will work for the frame that you have, or the photo album that you’ll be using.

Head to Image > Image Size. Make sure the box for “Resample” is unchecked. Find the Resolutionfield, highlight the number, and enter in 300. Once you’ve changed the resolution, the physical dimensions of the image, the width and height should change too. By unchecking the Resample box, and changing the resolution, you can make the image smaller, without losing any valuable data in the process.

Now, recheck the Resample box. Go to width, and enter in 6. The height box will probably read something like 3.979 – which is close enough for more cases when you’re printing, but in order to ensure absolute accuracy, you’ll want to take things a step further.

After hitting OK, navigate to the Marque Tool, located in the top left-hand corner, and select the rectangular marquee. Go up to the style drown-down dialogue and select Fixed Ratio. If your picture is in landscape orientation, you’ll want to input 3 for width and 2 for height at the top of the menu.

Now, go to the upper left-hand corner, click on the corner of the image, and drag open the box. You can drag the box around to position it. Once you’re happy with it, go to Image > Crop.Now go up to Image > Image Size, and, making sure the Resample box is checked, click the width to change it to 6. The height should automatically change to 4. Your picture should now be a perfect 6×4. Save your image to your desktop, and it’s ready to go for print!