What is APS-c cameras, and crop and what do these terms mean? In this article we will try to explain the size of the crop sensors and the reasons why they are preferred.
You’ve heard the expression APS-c often. So what is this APS-c term? APS-C is a type of sensor used in digital SLR cameras. While processing what is a full frame sensor, story of the sensor started with the digital age and that the standard size is 36x24mm.
In other words, the equivalent of analog film size in the digital age is full frame, which means full frame sensor. So how do crop sensors work and how do they determine their size? Now let’s look at the details.
What are the dimensions of APS-c, Crop Sensors?
It is 36x24mm in full frame size. Even if the size of the sensor equals the size of the film, meaning that it remains large, it means more cost-effective cameras for the manufacturer.
Camera manufacturers initially decided to reduce sensor costs and accordingly to increase the consumer market diversification by reducing the size of the 36x24mm sensor. The most efficient of this sensor reduction motion is the APS-c sensors.
The APS-C sensor size, which is commonly used mainly on entry-level and mid-segment DSLR cameras, is the reduction of the full frame size by 1.5 x on the Nikon side. Since this ratio means trimming the sensor, all of the “Crop“, “multiplier“ expressions that you see in the way it is used appear for this reason.
APS-c sensor size for Nikon 1.5 times the size of the full frame is about 23.6 x 15.8 mm size can be said. This crop factor condition is as small as 1.6 x in terms of Canon bodies. In this case, the sensor size of a Canon camera with a cropped sensor is 22.3 mm x 14.9 mm.
What is APS-c sensor? What does Crop mean by multiplier expressions?
Crop factor, cropped sensor is referred to as “DX” or “DX-format” on Nikon bodies. Nikon’s legendary models D90, D300s as well as the D7200 and the new D500 are popular bodies that always use APS-c sensors.
So How Are the Focal Lengths of the Lenses Calculated?
It’s probably one of the most asked questions. Let’s say you have a full-frame compatible lens and you want to use it on a DSLR camera with a sensor the size of APS-c. Let’s say your lens be the Nikon FX-format compatible AF-S NIKKOR 50mm f/1.8 g.
You can use this lens in a full-frame body with a focal length of 50mm. If you are going to use the lens in a body with DX, i.e. crop factor sensor, simply multiply the focal length by 1.5. For example, in this case the AF-S NIKKOR 50mm f/1.8 G Lens will have a focal length of 75mm over the Nikon D7100.
In other respects, you have an FX-compatible body, and if you use it with a DX lens, naturally there will be a loss of image at the edges. In the other scenario, when you use the FX-compatible lens with a DX body, there will be no loss of image. However, due to a factor of 1.5, the wide angle of the lens will not meet your expectations.le of the lens will not meet your expectations.
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