How can I shoot at f/1.8 in bright sunlight without overexposing?

Asked 7/23/2018

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I want shallow depth of field outdoors in very bright conditions, such as at the beach. On my Panasonic GH5, even at f/1.8, 1/8000s, and ISO 200, the image can still be overexposed. What are the practical ways to reduce exposure while keeping a shallow depth of field?

depth-of-field nd-filter bright-light panasonic-gh5 exposure

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

8y ago

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The easiest way to solve this problem is to use a neutral-density filter. They are essentially neutral grey filters that cut down on the light reaching the film or digital sensor. Good ones are fairly expensive, because they are surprisingly hard to manufacture.

Another option is to shoot in more favourable conditions, like overcast days or really early or late in the day, when light is less bright.

In a pinch, a polarizing filter (which is something most photographers carry with them most places they go) will cut down light by about two and a half stops, or a factor of about five, which can be the difference between overexposure and correct exposure in some situations.

Originally by user68581. Source · Licensed CC BY-SA 4.0

user68581

8y ago

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Use a neutral-density (ND) filter. An ND filter reduces the amount of light reaching the sensor, letting you keep a wide aperture like f/1.8 in bright sun. This is the standard solution for shallow depth of field in very bright conditions.

Also check these points:

Set ISO to the camera’s minimum value.
If you don’t absolutely need f/1.8, stopping down a bit (for example to f/2.8 or f/4) may still give pleasing background blur.
A polarizing filter can also reduce light by roughly 2 to 2.5 stops, which may be enough in some situations.
Shooting earlier/later in the day or under overcast light makes this much easier.
Longer focal lengths can create shallow-looking depth of field even at smaller apertures.

If you use a variable ND, cheaper ones can introduce issues like vignetting or other artifacts at stronger settings, so quality matters. Also confirm there aren’t any camera settings contributing to the overexposure.

How can I shoot at f/1.8 in bright sunlight without overexposing?

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