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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D5300/D5200/D5100/D5000/D3300/D3200/D3100/D3000 (Public) topic #7832
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Subject: "RE: DX Lenses and Crop Factor" Previous topic | Next topic
avm247 Moderator Awarded for high skills in documentary architecture and aviation photography Charter MemberTue 12-Mar-13 06:28 PM
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#4. "RE: DX Lenses and Crop Factor"
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Rancho Cordova, US
          

I think in terms of a 35mm film camera (135 format) with a negative of 36mm x 24mm. When I think of lenses and focal lengths, I think in terms of what that lens will give me as an angle of view with respect to a 35mm film or FX digital camera:
24mm = 84 degrees
35mm = 62 degrees
50mm = 46°

In DX format:
24mm = 61°
35mm = 44°
50mm = 31°30'

But I'm not comfortable learning the angle of view for DX focal lengths, so I translate to FX angle of views with the 1.5x crop.

In FX, a normal lens is the 50mm lens with 46° angle of view in DX, a 35mm x 1.5 = 52.5mm whic is pretty close to 50mm and has an angle of view of 44° ... making it a "normal lens" for DX bodies.

Long story longer, yes, do the crop factor thing if you think in terms of film/FX lenses and are comfortable with it.

I hope that makes sense.


Anthony

The Moderator Page and My Gallery
The important things in life are simple; the simple things are hard.

  

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A general, generic topicDX Lenses and Crop Factor [View all] , dperry23 , Tue 12-Mar-13 12:33 PM
 
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Reply message RE: DX Lenses and Crop Factor
Leonard62 Gold Member
12th Mar 2013
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Reply message RE: DX Lenses and Crop Factor
WD4MLA Silver Member
12th Mar 2013
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Reply message RE: DX Lenses and Crop Factor
MEMcD Moderator
12th Mar 2013
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Reply message RE: DX Lenses and Crop Factor
avm247 Moderator
12th Mar 2013
4

Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D5300/D5200/D5100/D5000/D3300/D3200/D3100/D3000 (Public) topic #7832 Previous topic | Next topic


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