Quick starting settings
Indoor light is usually weaker than daylight, so most settings come down to one question: how do you collect enough light without blur or heavy noise? These are starting points, not rules. Adjust them to your camera, lens and room.
| Situation | Aperture | Shutter speed | ISO |
|---|---|---|---|
| People, handheld, dim room | As wide as the lens allows (often f/1.8 to f/2.8) | About 1/125s or faster | Raise as needed, often 800 to 3200 |
| Moving people or children | Wide open or close to it | 1/250s or faster | Higher, as needed |
| Whole room on a tripod | Around f/8 | Whatever gives correct exposure | Base ISO |
Pick a shooting mode
Aperture Priority (A or Av) is a sensible default indoors: you choose the aperture, and the camera picks a shutter speed. If the light stays steady, Manual mode gives more consistency from frame to frame. Many cameras also offer Auto ISO with a minimum shutter speed, which lets you fix aperture and shutter speed while the camera adjusts ISO as the light changes.
Aperture
A wide aperture (small f-number) lets in more light and blurs backgrounds. It also makes focus thinner, so for a portrait you might focus on the nearer eye, and for a group you may need to stop down to keep everyone sharp. For a room on a tripod, a middle aperture such as f/8 is a common choice because most lenses are sharp there and depth of field is generous. If you are new to this, our guide to indoor photography tips for low light covers the practical habits that go with these settings.
Shutter speed
For handheld photos of still subjects, a shutter speed around 1/100s to 1/160s is a common safe zone, though steady hands or image stabilization may allow slower speeds. People move, so blur from a subject can appear even when the camera is steady. Faster speeds help with moving subjects, children and pets. A commonly cited guide is a shutter speed of at least one over your focal length, but treat it as a rough guide only.
ISO (and grain)
If the shutter speed is too slow, raising ISO is usually better than accepting a blurry photo. A slightly noisy sharp image is generally easier to live with than a clean blurry one. Newer cameras handle higher ISO better than older ones, so test yours at several values and decide your own ceiling. There is no single best ISO for indoor photography; the right number is whatever lets you reach a usable shutter speed at your chosen aperture.
White balance and file format
Indoor scenes often mix daylight from windows with warm or cool lamps, which can create color casts. Shooting RAW gives you the most room to correct white balance afterward. If you can, switch off the lamps that clash with window light, or use a single type of light. Auto white balance is often fine as a starting point.
Focus and metering indoors
Dim light can make autofocus hunt. Use a single focus point on a contrasty edge, and consider a lens with a wider maximum aperture, which gives the autofocus system more light. Bright windows can fool metering and darken your subject; if the person looks too dark, increase exposure compensation a little.
Aspect ratio: 16:9 or 4:3?
Neither is better in general. Many cameras shoot 3:2 natively, some use 4:3, and 16:9 matches most video and screens. Shooting at the camera’s native ratio keeps the full sensor, and you can crop later. Choose 16:9 mainly when the final output is video or a widescreen display.
The “20 60 20” and “60/30/10” rules
These are not standard photography rules with one agreed definition. “60/30/10” is more often a color-balance idea from interior design (dominant, secondary and accent colors), and it can help when composing a styled room. If you see “20 60 20” used in a photography tutorial, check how that author defines it before applying it.
Settings by situation
Specific situations need different priorities. For ceremonies and receptions, see indoor wedding photography camera settings. For listing photos, see camera settings for real estate photography, and for composing architectural and decor shots, read how to shoot interiors.