Knowing how lenses will behave differently from what you’re used to will help guide you to the right purchasing decision. That said, it is helpful to keep these concepts in mind when shopping for a new camera or lens, especially if you currently shoot one format and are considering switching to another. You don’t have to perform any math in your head if you don’t want to. All you really have to do is slap a lens onto your camera and look through the viewfinder or LCD. While the ideas of equivalent focal length and equivalent aperture can be confusing, for the regular consumer, the most important thing to remember here is simply this: What you see is what you get. This does not mean that if you put a Nikon 50mm f/1.4 FX lens on a DX body that the camera will indicate the lens is f/2 - it won’t. This is simply a way to understand how sensor size impacts depth of field and sensitivity. This means it is possible to achieve a shallower depth of field (think blurrier backgrounds) with a larger sensor, all else held equal. A full-frame lens with an aperture of f/2.8 will have an equivalent aperture of (roughly) f/4 on an APS-C camera, or f/5.6 on an MFT camera. A wider aperture lets in more light and creates a shallower depth of field. Crop factor and depth of fieldĬrop factor can also be applied to aperture, and illustrates how sensor size affects both light sensitivity and depth of field. APS-C lenses are camera lenses that fit an APS-C camera, which has a different type of sensor compared to other cameras. Canon’s APS-C sensors, such as those used inside its EOS Rebel T7i / EOS 800D and EOS M50 models, are a touch smaller than those inside the Nikon D5600 and Sony A6400, and other models from. Going the other way around, while technically possible in some cases, is not generally recommend, as a lens made for a smaller format won’t project an image circle big enough to cover a larger sensor (so you shouldn’t use an MFT lens on an APS-C or full-frame camera). A 18-55mm lens used on a camera with an APS-C sensor has an effective focal range of 27-82mm, although the exact length depends on the camera used. Speaking of lenses, it is possible to use a lens from a larger format on a smaller sensor, either through direct compatibility (e.g., Nikon FX to Nikon DX) or with an adapter (e.g., Canon full-frame to Sony APS-C). You could get an identical result by enlarging and cropping the full-frame image. It is a magnification effect, not a change of focal length. Likewise, on an MFT body, it will look like a 100-millimeter lens, as if being “zoomed in” by a factor of two. In fact, the APS-C image has been enlarged more than the full-frame image to match the display size. And you have to define the source with “Source: ” (working link).What this means is that if you have a 50-millimeter lens and put it on an APS-C body, it will offer an equivalent field of view of a 75-millimeter lens on a full-frame camera (50 × 1.5 = 75). You cannot copy more than 20 words from any of our posts. Here is the definition of the word “rumor” according to Merriam Webster dictionary:Įtymology: Middle English rumour, from Anglo-French, from Latin rumor clamor, gossip akin to Old English rēon to lament, Sanskrit rauti he roarsġ: talk or opinion widely disseminated with no discernible sourceĢ: a statement or report current without known authority for its truthģ archaic : talk or report of a notable person or eventĬontent Copyright If you want to use any image from this website you have to ask for permission. All trademarks and brands belong to their respective owners. Please visit their official websites by typing the specific brand name and adding. The APS (Advanced Photo System) format was originally introduced in 1996, as a new type of photographic film cartridge. APS film frames measure 16.7 x 30.2mm, but there are three different APS digital image formats: H (high-definition), C (classic) and P (panorama). This is a film format that was introduced in 1996, but has since been discontinued. Disclaimer: SonyAlphaRumors has no affiliation with any of the equipment manufacturers mentioned on this site. What is APS-C The active area of Canons APS-C format image sensors measures 22.2x14.8mm, a close match to a frame of APS-C format photographic film. APS-C Sensor Cameras APS stands for Advanced Photo System.
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