If you mount a Canon APS-C lens (labeled as an EF-S lens) onto a Canon full-frame camera, the lens mount will ram into the mechanism inside the camera, which you want to avoid at all costs. Note that things get a bit trickier when it comes to native Canon lenses. This is a viable way of taking photos,īut you’re going to lose some resolution. The camera automatically identified the lens as APS-C and switched into a crop Nikon and Sony camera and you don’t see vignetting, this is probably because If you mount an APS-C lens on a full-frame Which can easily ruin an image–unless you crop it out. You’ll often see vignetting (i.e., darkening) around the edges of the frame, Lenses, then you can still mount an APS-C lens onto a full-frame camera. Now, if you’re using Sony or Nikon cameras and So it’s smaller than required and doesn’t cover the entire full-frame sensor. The image that’s projected by the lens is designed for APS-C sensors, not full-frame sensors. On a full-frame camera, however: Image Projection There is one issue with mounting an APS-C lens Image QualityĮven the quality of the lens doesn’t change Īs I explained above, a lens’s image quality isn’t influenced by the sensor Depth of Field (DoF)Īnd the lens’s depth of field doesn’t change,Įither, because the focal length of the lens remains constant. Focal length is an optical property of the lens, completely unaffected by the sensor size. Focal Lengthįor instance, the lens focal length doesn’t change – because just like a full-frame lens, the APS-C lens’s focal length is fixed from the moment it’s produced. In many ways, attaching an APS-C lens on a full frame camera is just like attaching a full-frame lens to an APS-C camera. (This is known as the circle of projection.) You see, whenever you mount a lens onto aĬamera, the lens projects a circular image onto the camera sensor. With an APS-C sensor size: Lens’s Field of View However, there is one feature that changes The optics of the lens remain constant no matter what camera you mount it on. Third, the quality of the lens stays the same. Theĭepth of field is determined by the aperture, the focal length, and theĭistance from the lens to the point of focus none of these are altered by an Second, the depth of field doesn’t change. Focal length is the distance from a point inside the lens to the camera sensor, and this isn’t changed by a smaller, APS-C sensor. You see, the focal length of the lens is a physical property – it’s already fixed from the moment the lens is created. But what happens if you take that full-frame lens…įirst, the focal length of the lens doesn’t change. What Happens When You Attach aĪ full-frame lens is designed for full-frameĬameras. I’m going to explain whether you can use anĪnd you’ll come away knowing all about your I’m going to explain whether you can use aįull frame lens on an APS-C body.
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