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Lens selection
Excellent
vs
Good
Better lens selection gives you more options
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Larger sensor
35mm
vs
APS-C
More sensor area. Bigger is (generally) better.
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Bigger pixels
~ 6.94
vs
3.92 microns
Better low-light and dynamic range (all else equal)
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Shoot 4K video
4K (DCI)
vs
1080p
Make sure you have a fast computer
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More cross-type AF points
41
vs
15
Cross-type AF points improve autofocus performance
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Dual card slots
Yes
vs
No
Gives you more storage flexibility
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Headphone jack
Yes
vs
No
Monitor audio recording while you shoot video
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Higher extended ISO
204800
vs
51200 ISO
Higher extended ISO can give more low-light flexibility