Is Your Autofocus Slightly Off? | Understanding BACK-FOCUS and How to Fix
I recently picked up a Sigma 85 1.4. However every time I use the AF paired to my Nikon D850...all my images confirm focus thru the eye piece but fail to accurately focus on the area I'm locking onto. For example, doing headshots I focus on the eye of my subject, without them or myself moving I snap the shot and at 1.4 the nose is in focus but the eyes are soft and fallout of crisp focus. But wait, why is the nose sharp but not the eyes? I swear i focused on the eyes. Sound like problem you've encountered? Well don't be alarmed, it's just a simple case of an irritating back focus issue. Here is a short guide on what, why and how to fix it.
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My Photography Gear List:
Nikon D850 (camera body)
Tamron 24-70 f/2.8 (lens)
Sigma 85mm f1.4
Tamron 100-400 f4.5-6.3 (lens)
Rokinon 14mm f/2.8 (lens)
Manfrotto 190 Tripod
Ice 100x100 10 Stop ND
Video Gear:
Nikon D750 (camera body)
Sigma 35mm f1.4
Samson Mobile Wireless Lav Mic Set
OffBrand Tripod
MacBook Pro 16"
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