Mammal field guide · Pronghorns

Photographing the Pronghorn

How to photograph the Pronghorn (Antilocapra americana): the right lens for its size, shutter speeds for perched and moving animals, and when it's most often seen (May, June and July).

130–150 cm1/1600–1/2000 s
130–150 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
25,567
Research-grade sightings in N. America
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 140 cm long filling a third or half of the frame width horizontally.

Distance⅓ of frame (FF)½ of frame (FF)⅓ of frame (APS-C)⅓ of frame (MFT)
5 m (16 ft)42 mm63 mm28 mm21 mm
10 m (33 ft)84 mm127 mm56 mm42 mm
15 m (49 ft)126 mm190 mm84 mm63 mm
20 m (66 ft)168 mm254 mm112 mm84 mm
30 m (98 ft)252 mm381 mm168 mm126 mm
50 m (164 ft)421 mm635 mm280 mm210 mm

When to find it#

Jan: 3% Jan Feb: 3% Feb Mar: 5% Mar Apr: 9% Apr May: 15% May Jun: 19% Jun Jul: 14% Jul Aug: 11% Aug Sep: 11% Sep Oct: 5% Oct Nov: 3% Nov Dec: 2% Dec
Share of iNaturalist observations by month across North America. Peak months: May, June and July.

About the Pronghorn#

The pronghorn ( /ˈprɒŋˌhɔːrn/) (Antilocapra americana) is a species of artiodactyl mammal indigenous to interior western and central North America. Though not an antelope, it is often known colloquially in North America as the American antelope, prong buck, pronghorn antelope, prairie antelope, or simply antelope because it closely resembles the true antelopes of the Old World and fills a similar ecological niche due to parallel evolution.

Summary adapted from Wikipedia via iNaturalist (CC BY-SA 4.0).

Field-craft tips#

  • Fastest land mammal in the Americas — pan at 1/2000 s.
  • Use animal-eye AF; for herds stop down a little so several animals are sharp.
  • Sightings peak in May, June and July, 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.

Frequently asked questions#

What lens do I need to photograph a Pronghorn?

At about 140 cm long, a pronghorn fills a third of a full-frame image at 10 m with roughly 84 mm, or at 20 m with 168 mm.

What shutter speed should I use for a Pronghorn?

1/500 s when it's still; 1/1600–1/2000 s for action.

When is the best time to photograph a Pronghorn?

Observations in North America peak in May, June and July. Early morning and late afternoon give the best light and activity.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources