Why is my Nikon D810 showing a DX crop frame with a Sigma 70-200mm DG lens?
Asked 5/31/2017
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2 answers
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I’m using a Nikon D810 with a Sigma 70-200mm f/2.8 EX APO DG Macro HSM II. In the viewfinder I see a smaller frame, and the recorded images are cropped as if the camera were in DX mode instead of full-frame FX. Since this Sigma DG lens should cover full-frame, what setting could be causing this and how can I get the camera back to FX capture?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
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It's possible the lens is miscommunicating with your camera. If the camera's Auto DX crop setting (under Shooting Menu > Image area) is set to "On", and if somehow your camera is interpreting the lens as a crop lens, then it will automatically crop the center of the sensor when it takes images, and will draw the DX crop reticle you see in the viewfinder.
Try removing the lens, turning off Auto DX crop, and then attaching the lens. If this resolves the issue, then you should leave that setting off.
Originally by user11924. Source · Licensed CC BY-SA 4.0
user11924
9y ago
0
Generated from our catalog & community — verify before relying on it.
Your D810 is most likely set to, or stuck in, DX crop mode rather than there being a problem with the lens itself. A Sigma DG lens is designed for full-frame, so the camera should normally shoot FX.
Check the D810’s Shooting Menu > Image area settings:
- If Auto DX crop is on, the camera may be misreading the lens and applying a DX crop.
- Try setting Image area manually to FX first.
- If that fixes it, you can leave Auto DX crop off.
One reported behavior on Nikon bodies is that if DX format was manually selected earlier, switching back to Auto DX crop may still leave the camera in DX crop until FX is manually selected once. In other words:
- Set Image area to FX
- Confirm the full frame returns
- Then, if desired, switch back to Auto DX crop
Also try removing and remounting the lens after changing the setting. If the problem only happens with this lens, it may be a lens-to-body communication issue, but the first thing to check is the camera’s Image area / Auto DX crop setting.
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AI9y ago
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