The aperture or f-stop is one of several factors determining the depth of field. Depth of fieldĪs with focal length, a multiplier effect gets applied to the aperture when using APS-C and MFT cameras. Right: Photo taken at 35mm on a Micro Four Thirds camera. Center: Photo taken at 35mm on a crop-sensor camera. Left: Photo taken at 35mm on a full-frame camera. Thus, if I mount a 35mm lens on my Nikon D5600, it would multiply the focal length by 1.5x, effectively giving me a focal length output of around 52.5mm. And since an APS-C camera (and a Micro Four Thirds camera) crop out the edges of the frame, you end up with an “effective” focal length that corresponds directly to the original focal length multiplied by the crop factor.įor example, a crop-sensor camera such as the Nikon D5600 has a crop factor of 1.5x. You see, the focal length measurement of any given lens is based on the standard 35mm film format. Focal lengthĪ crop factor has a predictable affect on your lens’s focal length. Use a Micro Four Thirds camera, and you’ll get an even tighter result (the right image). But apply the APS-C crop factor, and you get a tighter shot (the center image). The image on the left was taken with a full-frame camera.
Right: Photo taken with a Micro Four Thirds camera. Center: Photo taken with a crop-sensor camera. Left: Photo taken with a full-frame camera. The Micro Four Thirds crop factor is even stronger: 2x.Īs I explained above, the crop factor affects your field of view. An APS-C sensor (also known as a crop sensor), has a crop factor of 1.5x (on Nikon and Sony cameras) or 1.6x (on Canon cameras). A full-frame camera is the standard it has no crop factor. It refers to the different crop effects created by different sensor sizes. You’ll get a tighter shot, one that looks like it was taken with a longer lens.)Īnd that is what the term crop factormeans. The effect is similar to taking a photo with a 50mm lens, then heading home and cropping the image on your computer. Since an APS-C sensor is smaller than the full-frame sensor, the sensor crops the frame, giving you a result that looks zoomed in – as if you took the photo with a 75mm lens rather than a 50mm lens. Simple.īut what if you mount a 50mm lens on an APS-C camera? Will it capture a 50mm image? Makes sense, right? A 50mm lens captures a 50mm image. When you press the shutter button, it captures a 50mm image.
Say you mount a 50mm lens on a full-frame camera. So let’s take a look at the factors affected by sensor size, starting with: Crop factor Now, apart from the physical sizes, there are several important differences between full-frame, APS-C, and Micro Four Thirds sensors.
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