How to Calculate Camera Focal Distance to Lens Range

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Calculating camera focal distance to lens range may sound complicated, but it will soon become second nature. Calculate camera focal distance to lens range with help from an experienced photography professional in this free video clip.

Part of the Video Series: Tips for Photographers
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Video Transcript

Hi. I'm Dan Reinecke from Unknown Media, and today I'm going to tell you how to calculate focal distance to the lens range. Now this is actually simple and quite self explanatory. You just need to understand your terms. Your focal length is actually going to be in reference to the distance in millimeters between the lens and the sensor. So if you have a 50 millimeter prime lens you have a focal length of millimeters. Now as for lens range if you have a zoom lens that is a 24 millimeter to a 70 millimeter lens, you'll have a varying focal length. And your lens range would be from a range of 24 millimeters to 70 millimeters. Your focal distance now is simply the distance from your camera's sensor to the object that you have in focus which doesn't correlate to the lens range. You will have a minimal focal distance which will be determined by the length of your lens. Otherwise your focal distance will on to infinity if you choose it to. I'm Dan Reinecke, and now hopefully you have an understanding of focal distance and lens range. Take your best shot.


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