I have Nikon D7000 with 18-105 mm lens. One day around noon outside I tried to dial in 1/4000 shutter speed in Shutter Priority mode at 18 mm f/3.5. The exposure meter was telling me my image is going to be underexposed. I tried to increase the ISO to its maximum value but still exposure meter was not balanced. So I am wondering at what combination of ISO and f-stop I can use such or more faster shutter speeds.
The meter is for manual mode. Ignore it if you're in shutter or aperture priority.
It may blink Lo at you if it thinks it's too dark, or pop up the flash, but just give it a try and see what you get. You were probably fine to shoot
Sunny 16 Rule says on a sunny day, at f/16, shutter ought to be reciprocal of ISO.
Your exposure gets basically determined by three things:
These three properties together determine the amount of stops. There are tables as a general guideline for how many stops you need under certain circumstances. One example is given here.. According to this table, the most common bright daylight setting equals the number 15. On this same page is a table which shows which settings you need to use for which f-stop number.
This table says that for bright sunlight you can achieve 1/4000 at ISO200 F/4.