this post was submitted on 30 Nov 2023
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Understanding relative focal length with crop sensors (alien.top)
submitted 11 months ago by [email protected] to c/[email protected]
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Hi all,

I'm trying to better understand relative focal length. I shoot with a Nikon D500 (APS-C) and up until now have done mostly sports photography. I'm trying to get more into street photography but trying to understand what I'll be shooting with based on the lenses that I currently own and I'm a little confused. Can you please confirm if my thinking here is correct.

Here are the lenses I currently own and (my assumption about the relative focal length with this crop sensor camera):

  • Nikon AF-S 70-200mm f/2.8E FL ED VR (105-300mm)
  • Nikon AF-S 50mm f/1.8G (75mm)
  • Nikon AF-S 35mm f/1.8G DX (35mm since it's a "DX" lens)

Are my assumptions correct? If so, do I not have a true 50mm focal length lens for this camera body? I was looking to shoot with a 50mm to start out my street photography journey.

Thank you for the help.

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[โ€“] [email protected] 1 points 11 months ago

There is no such thing as a crop sensor. Well, unless it is literally a sensor placed in a cornfield or something. Maybe you took a large sensor and cut it down. There you cropped it. If you bought a camera that is equipped with an apsc format sensor, it is just a sensor. The 35 millimeter is no more a crop of a medium format sensor than a phone sensor is a crop of a micro four thirds sensor.