If you are bringing images to a Tri-City Club Meeting, you should first resize the image appropriately, so it will be displayed correctly. You should also know how to resize images for other purposes as well. For example, photos that you put on Facebook should be sized 720px, 960px or 2048px wide and should not be larger than 100KB. Otherwise, Facebook compresses your images, and they won’t look their best!
A good quality print is usually printed at 300 ppi (pixels per inch). What does that mean? Well, if you want to print a 6″x 4″ photo, the image should be sized 1800px x 1200px (6″ x 300ppi = 1800px, 4″ * 300ppi = 1200px). Or in simple terms, multiply the printed photograph dimensions by 300. If you need an 8″x 10″ print, you would need to make sure your image is sized 8 x 300= 2400px wide by 10 x 300=3000px high.
Here are a couple of videos that go through pixels, resizing etc.
Requirements for Club Images
For display on our club projector, there are Three (3) main requirements. These are not difficult, but help ease the process at the club meeting.
- We require jpg images to have a maximum horizontal dimension of 1920px or a maximum vertical dimension of 1080px. This allows your photographs to project at the highest resolution for the projector while keeping the file size down.
- The jpg should use the “sRGB” embedded colour profile. Depending on the software you are using, usually you won’t need to change anything, and the Software will use this as a default. However, in the past some people have shown up and their images seems “washed out”, and the colour saturation is much reduced. This is because the jpg they brought used a different embedded colour profile, and the Club laptop (Windows), didn’t know how to deal with it correctly. “sRGB” has been a standard for a long time, and thus will display correctly.
- Name your files Firstname_Lastname_Number.jpg. For example:
Bring on a USB drive, and please put them as the ONLY files on the drive, or in a VERY OBVIOUS folder. This will help speed up the copying to the laptop
There are many ways to resize images. One of the easiest is with the export presets in your post processing software. But you can also resize images without special software using Preview on a Mac and Paint on a PC, both of which come with the computer. Here are some directions for a few different methods. For more details, check out the attached links.
Resizing with Lightroom
- Edit your photo if needed.
- From the menu choose File > Export to bring up the export dialogue window.
- In the Image Sizing box, check Resize to Fit.
- Select Long Edge from the drop-down menu. This will limit the size of you longest edge to the pixels you choose.
- Input the value and units (1920 pixels for a landscape orientation, or 1080 pixels for a portrait oriented image).
- For projected images and images for the web, set the resolution to 96 pixels per inch
- If you plan to print an image, select Dimensions from the drop-down menu.
- Set the length, width in pixels, but this time change the Resolution to 300 pixels per inch.
- Click Export and your resized image will be sent to your computer.
- For a more detailed explanation, see the excellent article on the Photography Life website at https://photographylife.com/how-to-properly-resize-images-in-lightroom.
Resizing with Preview on a Mac
- Start Preview and open an image (or double click on a jpg file from the Finder).
- To make sure that you are working on a copy of your original higher resolution image, select duplicate from the file menu. Give your image a new name.
- From the menu, select Tools > Adjust Size.
- From the Image Dimension box, select 1920×1080 from the drop-down menu in the Fit Into box. this will automatically limit either the width to 1920px or the height to 1080px, depending on the image orientation and aspect ratio.
- Here is a link to Apple’s support page for more information.
Resizing with Paint on a PC
- Double click on an image file to open it up. This should open the image inside Paint.
- From the home menu (in Windows 10), select resize. This will bring up the Resize and Skew box.
- Enter 1920 in the horizontal dimension, making sure that pixels and maintain aspect ratio are selected.
- You may notice that the vertical dimension is bigger than 1080 now. This happens if the aspect ratio of the image is not as long and skinny as the projector’s aspect ratio. If this is the case, change the vertical dimension to 1080 pixels. This will resize the horizontal dimension down.
- Choose Save As to save your image and give it a new name. This will preserve your higher resolution file.
- I believe that in older versions of Windows, you could set a Long Edge or Short Edge dimension, but this is no longer available in Windows 10.
- Here is a link for more detailed instructions.
Resizing with Photoshop Elements
- Very similar to Lightroom.
- For detailed instructions, here is a link to Adobe’s instructions.