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The AF-S NIKKOR 20mm f/1.8G ED lens is an FX-format lens, and the Nikon D7500 and Nikon D500 are both DX-format camera bodies. Due to the 1.5x crop that occurs when an FX lens is mounted on a DX body, the AF-S NIKKOR 20mm f/1.8G ED lens will have an effective field of view of 30mm. For more information on lens compatibility, please contact Nikon Support.
Sorry, there was a problem. Please try again later.Its 20mm on a full frame camera only. It will fit crop sensor cameras but will not be 20mm on those. It's a great lens.
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