Nikon D810 Product Manual - Page 381

Option Description Exposure locks when the MB-D12 B button is E AE lock (Hold) pressed, and remains locked until the button is pressed a second time or the standby timer expires. r FV lock Press the MB-D12 B button to lock flash value (built-in flash and compatible optional flash units only, 0 198, 430). Press again to cancel FV lock. G Same as Fn button The MB-D12 B button performs the function selected for Custom Setting f4 (0 343). f16: Assign Remote (WR) Fn Button G button ➜ A Custom Settings menu Choose the role played by the Fn button on the wireless remote controller. Option q Preview r FV lock B AE/AF lock Description During viewfinder photography, you can preview depth of field while the Fn button is pressed (0 117). During live view photography, you can press the button once to open the lens to maximum aperture, making it easier to check focus; pressing the button again restores aperture to its original value (0 41). Press the Fn button to lock flash value (built-in flash and compatible optional flash units only, 0 198, 430). Press again to cancel FV lock. Focus and exposure lock while the Fn button is pressed. 357