Settings guides · night & astrophotography · Canon EOS R50
Best Canon EOS R50 settings for night & astrophotography
Night photography is about gathering scarce light without ruining the shot. On a tripod you can use a long shutter and low ISO; for stars you balance a wide aperture, a high ISO, and a shutter short enough that the stars stay points. Here it's tuned to the Canon EOS R50.
Recommended Canon EOS R50 settings for night & astrophotography
Tuned for your Canon EOS R50
- Reach: its 1.6× APS-C crop turns a 300mm lens into about 480mm of reach — a real advantage for night & astrophotography, though it narrows your wide end.
- Clean ISO: modern APS-C bodies like the Canon EOS R50 stay usable up to about ISO 6400 — cap Auto ISO there so your shutter stays fast without over-cooking noise.
- Autofocus: use Servo AF with a zone or tracking area, and drop to a single point when it keeps grabbing the background.
Set up your Canon EOS R50 for night & astrophotography
- Back-button focus: in Custom Controls, assign AF to the AF-ON (or ✱) button and remove AF from the shutter — so focus and shutter fire separately.
- For action: set AF operation to Servo AF with a wide AF area (or Whole-area + tracking).
- Eyes & animals: turn on Subject detection (People / Animals) in the AF menu.
- Burst: set the drive mode to High-speed continuous (H+).
Exact menu wording can vary by firmware.
Why these settings
There's very little light, so you spend a tripod and a long shutter first, keeping ISO low for a clean file. Stars are the exception: they move, so the shutter is capped (the '500 rule' — 500 ÷ focal length ≈ max seconds), which forces a wide aperture and high ISO to make up the light.
Common mistakes
- Leaving autofocus on and getting a whole card of soft frames.
- Too long a star exposure, turning pin-point stars into trails.
FAQ
What is the 500 rule?
Divide 500 by your full-frame-equivalent focal length to get the longest shutter (in seconds) that keeps stars as points. At 20mm that's about 25 seconds.
What ISO for the Milky Way?
Usually ISO 3200–6400, paired with the widest aperture your lens has and a shutter set by the 500 rule. Stacking frames later cleans up the noise.
Does the Canon EOS R50 have good autofocus for night & astrophotography?
The Canon EOS R50 can handle night & astrophotography well if you use Servo AF (continuous AF) with a tracking or zone area and keep your shutter speed high.
Is the Canon EOS R50 good for night & astrophotography?
Yes. With the settings above and its APS-C sensor (1.6× crop for extra reach), the Canon EOS R50 is well suited to night & astrophotography. Dial the settings in for your exact lens with the coach.