100–300 cm
Typical length (family range)
1/500 s
Shutter: perched / still
1/1600–1/2000 s
Shutter: action / flight
f/5.6–f/8
Aperture
190,716
Research-grade sightings in N. America
Recommended camera settings#
ModeManual + Auto ISOLock shutter & aperture, let ISO float
Shutter (still)1/500 s
Shutter (action)1/1600–1/2000 s
Aperturef/5.6–f/8
FocusAF-C + subject/eye detectionUse animal-eye AF; for herds stop down a little so several animals are sharp.
DriveHigh-speed burst
Lens100–400 mmFull-frame equivalent
Focal length needed to frame it#
For a subject about 200 cm long filling a third or half of the frame width horizontally.
| Distance | ⅓ of frame (FF) | ½ of frame (FF) | ⅓ of frame (APS-C) | ⅓ of frame (MFT) |
|---|---|---|---|---|
| 5 m (16 ft) | 30 mm | 45 mm | 20 mm | 15 mm |
| 10 m (33 ft) | 59 mm | 89 mm | 39 mm | 30 mm |
| 15 m (49 ft) | 89 mm | 134 mm | 59 mm | 44 mm |
| 20 m (66 ft) | 118 mm | 178 mm | 79 mm | 59 mm |
| 30 m (98 ft) | 177 mm | 268 mm | 118 mm | 89 mm |
| 50 m (164 ft) | 295 mm | 446 mm | 197 mm | 148 mm |
About the Mule Deer#
The mule deer (Odocoileus hemionus) is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule. The several subspecies include the black-tailed deer.
Summary adapted from Wikipedia via iNaturalist (CC BY-SA 4.0).
Field-craft tips#
- The autumn rut (Sept–Nov) brings bugling elk and sparring bucks.
- Keep 25 m+ from elk and moose; they are dangerous during the rut and calving.
- Use animal-eye AF; for herds stop down a little so several animals are sharp.
- Sightings peak in June, July, August and September, which is when you'll have the most chances.
Ethics#
- The welfare of the animal comes first: if it changes its behaviour because of you, you are too close.
- Stay on trails, respect closures around nests, leks, dens and haul-outs.
- Avoid playback and baiting in sensitive seasons; never bait predators.
- Don't share precise locations of rare, nesting or roosting animals publicly.
More Deer#
Frequently asked questions#
What lens do I need to photograph a Mule Deer?
At about 200 cm long, a mule deer fills a third of a full-frame image at 10 m with roughly 59 mm, or at 20 m with 118 mm.
What shutter speed should I use for a Mule Deer?
1/500 s when it's still; 1/1600–1/2000 s for action.
When is the best time to photograph a Mule Deer?
Observations in North America peak in June, July, August and September. Early morning and late afternoon give the best light and activity.
Sources & licences#
- iNaturalist — Observation data CC BY-NC; photo licence as credited
- Wikipedia — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources