Hi! Lo! How Do We Know? by Irene Young
Do you get a foggy feeling in your brain when someone says send a “LO RES image” or “Make sure it is a HI RES image!?” Here is the simple low down on what it all means. A LO RES image (low resolution) is a small image suitable for use on the web. A HI RES image (high resolution) is a large image suitable for “print” or “hard” copies. For those of you who have heard the term “dpi” (dots per inch), lo res for the web is generally 72 dpi, while images for print, such as business cards, flyers, etc., are larger at 300 dpi. (300 is a higher number than 72, thus the term HI and LO res).
Have you ever had someone send you a photo to your email and when it arrives it is so huge that you can’t see the whole image? That image is a hi res image, larger than necessary for viewing on the web. By the way, all those Hi Res images in both your INBOX and your SENT FILE take up space in your email program. Your email will eventually be too full to receive messages. You can delete these large messages from your inbox and/or sent file. Chances are you don’t even know they are there, so you can live without them. We will write about how to manage your email and your photographs soon. Stay tuned.
Have you ever used a photo on a flyer and it looks all fuzzy and bad? No doubt you used a lo res image that was too small for “print use.” So, what do we do to check or change the size of an image. The average person will not have PHOTOSHOP as an editing program. The average person may not have any editing program at all. So, in an effort to remain simple, I will stress a very important piece of knowledge. We CANNOT convert a small (lo res) image to a large (hi res) image. A baby cannot do the job of an adult. The important thing at this point is to know the difference, so you do not print a flyer or business card with a low resolution image on it. You may have to go to the original source to get the full sized image, or ask your photographer for the hi-res version. At this point, I just want to prevent you from wrong usage, and I want to empower you with a clear head when people start throwing these terms around the room. Images that you use professionally should be labeled maryjones_HiRes.jpg or maryjones_LoRes.jpg or if you prefer, maryjones_WebUse. Don’t worry about what JPG means. It’s just a type of image file.
SUMMARY: Remember LOW for PRINT is a big NO. HIGH for WEB is SKY HI, and will take too long to load the web page. Most importantly, the danger zone is asking the baby to drive the car. The baby is too small. If your photographic image is too small, you cannot ask too much of it. However, for use on the web – that same image may represent your true stunning spirit.