![]() ![]() The smaller the number, the wider the opening (which lets in more light). When you see a 1: followed by a number, this represents the lens's maximum aperture or how wide the opening on your lens is when you take a photo. If any of this is confusing, you can read much more about focal length here: You can use this lens at its widest angle (18mm), the most zoomed (55mm), or anywhere between 18mm and 55mm. The pair of numbers refers to the focal length range or that particular lens. Let's look at an 18-55mm lens as an example. The higher the focal length (larger number), the less you will see in your image (more zoomed in).The lower the focal length (smaller number), the more you will see in your image (wider view). ![]() So when you see "mm" following a number or a pair of numbers on a lens, you will know that the number refers to the focal length (single number) or focal range (pair of numbers).įocal length is what you see when you look through your camera viewfinder. Millimeters, or "mm" for short, is the standard unit of measurement for the focal length of a lens. ![]() In this post, I will show you a few examples of standard lenses and explain some of the most important numbers and letters you have on your lens. They may seem complicated at first, but its really easy to understand once explained. If you are new to photography, you might find yourself wondering what all of the different numbers, letters, and symbols on your camera lens mean. What Do the Numbers, Letters, & Symbols on a Camera Lens Mean? How to Sync Lightroom Presets from CC to Mobile How to Install Presets in the Free Lightroom Mobile App
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