How can I get tack-sharp shallow-DOF portraits when no AF point is on the eye?
Asked 1/24/2014
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I want very sharp portraits with a shallow depth of field, but my camera doesn’t have an autofocus point exactly where I want to focus. I’d prefer not to crop, and focus-and-recompose isn’t reliable at very shallow depth of field because the subject can shift out of focus. Measuring distance and manually setting focus feels too slow and imprecise. What’s the best way to handle this?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
12y ago
2 Answers
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Your best option is probably to put the camera on a tripod and use magnified Live View to do precision manual focusing.
Some cameras support focus peaking via an electronic viewfinder or the Live View screen, which allows the camera to tell you what parts of the entire frame are most in focus. This may or may not be helpful when you are trying to isolate your subject using selective focus at a narrow aperture. Focus peaking will show what areas are in sharpest contrast, but won't necessarily tell you if what is in sharpest contrast is perfectly focused.
Originally by user15871. Source · Licensed CC BY-SA 4.0
user15871
12y ago
0
Generated from our catalog & community — verify before relying on it.
If your AF points don’t cover the spot you need, the most reliable method is precision manual focus using Live View.
Put the camera on a tripod, switch to Live View, magnify the image, and focus manually on the eye or other critical detail. This gives you much finer control than estimating distance or using the viewfinder.
If your camera offers focus peaking in Live View or an electronic viewfinder, it can help show which areas are most in focus across the frame. That said, peaking is only a guide: it highlights high-contrast areas and doesn’t always guarantee perfect focus on the exact feature you want.
So for the highest accuracy at shallow depth of field, magnified Live View manual focus is your best option. If that’s too slow for the situation, you may need to relax your requirements somewhat, since extremely shallow DOF leaves very little margin for error.
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AI12y ago
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