James Farrell
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 Re: EFC and Mechanical Shutter and Fast Primes | |
nhmorgan wrote:
Auto is an option, but I assume that with lenses that can only use EFC that auto is the same as using EFC. It's that or fully electronic. Fully manual just isn't an option; it's greyed out.
This issue is a big mis-understanding that's a few years old. When Nikon issued firmware 2.0 for the Nikon Z6 and Z7 (first generation models) they added a shutter option in the menu called AUTO. The reason for doing this was for technical issues that are a bit hard to understand. The detailed explanation is irrelevant here. Just remember the shutter speed number 1/250. Here’s a summary why:
If you've chosen AUTO for shutter -- If the shutter speed you've selected (or the camera changed to when in Aperture Mode), is 1/250 or slower the camera will automatically use EFCS. If the shutter speed is 1/320 or faster, all the way to the maximum mechanical shutter possible for that model of Z body, the camera will use Mechanical Shutter. In other words, in AUTO mode, the camera uses Mechanical Shutter at 1/320 or faster; EFCS at 1/250 or slower.
If you've chosen EFCS in the shutter menu, the camera will use EFCS at ANY speed (that you set or that the camera uses in Aperture mode) up to and including 1/2000. It will not set a shutter speed faster than 1/2000 when EFCS is selected.
If you mount a lens AND your camera will let you choose MECHANICAL, (meaning that it's not 'grayed out in the Shutter Type menu), that means that the lens you mounted can be used in mechanical mode at ANY shutter speed. That’s why your 24-70 f/4 S, for example, can be set for Mechanical Shutter.
The reason why you CANNOT select MECHANICAL for the shutter type for certain lenses is that those lenses do not work properly (for technical reasons) in mechanical mode at 1/250 or slower. So Nikon doesn't let you choose that in the menu.
Bottom line: select AUTO and you’re shooting EFCS at 1/250 and slower. At 1/320 and faster you’re shooting in Mechanical Shutter.
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