Wide lens has a size mm below 20mm to near 10mm. by using this lens then the photographer will produce the image wider than the mm lens above 18mm. Using Wide Angle Lens will produce images with slightly curved, and the results of this image can be corrected again by using the software.
Here's an example of using a Wide lens, starting with 15mm Fisheye type up to 1200mm
The size of the lens should match the size of the camera sensor used, usually the Wide Angle Lens lens is made for Full frame sensor. when the lens is attached to the APS-C body, then the size of the lens should be multiplied by 1.5x. for example you buy a 14mm lens, then when mounted to the APS-C sensor will be 19mm.
Although the main functionality of the Wide lens for taking pictures with a wide size only, the price is not cheap, there are some lenses from non-brand camera products or lens products made by other companies, of course this with a small f of f2 and the highest f4, on some types of lenses are rewarded with 500 dollars.
If the Wide Angle Lens lens made by the original camera manufacturer then the price is very expensive, like the lens of 14mm f2.8 canon sold for $ 2000. if the Wide Angle Lens nikon lens is sold for $ 1000, it's much cheaper with Sigma 14mm $ 700 and Tamron $ 800.
Nikon and Canon Wide Angle Lens for DX Body
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