11/25/2023 0 Comments Camera crop factorTime for a little bit of math.not much, I promise. ![]() In order to capture the same view with your digital SLR, you have to step backwards - away from the scene you are photographing. The digital SLR sensor has "cropped" the view - hence the term crop factor. If you stand in the same spot and take the same image with the same lens a digital SLR will capture less of the scene than a film SLR. Large parts of the top and side of the photo are cut off, creating an artificial zoom effect. Here's how our digital SLR sensor sees the exact same scene, because the sensor is smaller than the 35mm film. The entire mountain is captured in this image. The example to the right shows how much of the scene is captured on the 35mm film. The smaller box is the size of a digital SLR sensor.įirst you take the photo with a standard roll of film. The large box is the size of a 35mm film negative. In reality, the image captured by the lens is upside-down, but we'll ignore that for now. Imagine that this circular image of a mountain is how the lens on your camera sees the world. It's easier to understand crop factor when you understand the difference in size between a digital SLR camera sensor and a standard 35mm film negative.Ī digital SLR sensor is SMALLER than a standard frame of 35mm film. In a moment, I'll explain just what sort of multiplication is going on. The key thing to focus on is the multiplier: the three most common ones are 1.5, 1.6 and 2.0. A 50mm lens frames like a 75mm lens on Camera Z.Camera Z has a 1.5 times lens focal length conversion factor.Camera Z has a focal length multiplier of 1.5 times.For example, all of the following mean the exact same thing: It doesn't help that it's referred to in several different ways. ![]() ![]() Crop factor is a term that can cause a lot of confusion when you're trying to pick a digital SLR camera.
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