Recommended camera settings#
Focal length needed to frame it#
For a subject about 11 cm long filling a third or half of the frame width horizontally. Small birds demand long lenses and a close approach — a blind or feeder setup helps.
| Distance | ⅓ of frame (FF) | ½ of frame (FF) | ⅓ of frame (APS-C) | ⅓ of frame (MFT) |
|---|---|---|---|---|
| 5 m (16 ft) | 487 mm | 703 mm | 325 mm | 244 mm |
| 10 m (33 ft) | 975 mm | 1,406 mm | 650 mm | 487 mm |
| 15 m (49 ft) | 1,462 mm | 2,109 mm | 975 mm | 731 mm |
| 20 m (66 ft) | 1,949 mm | 2,812 mm | 1,300 mm | 975 mm |
| 30 m (98 ft) | 2,924 mm | 4,219 mm | 1,949 mm | 1,462 mm |
| 50 m (164 ft) | 4,874 mm | 7,031 mm | 3,249 mm | 2,437 mm |
About the Blue-gray Gnatcatcher#
The blue-gray gnatcatcher or blue-grey gnatcatcher (Polioptila caerulea) is a very small songbird, 10–13 cm (3.9–5.1 in) in length and weighing only 5–7 g (0.18–0.25 oz). Adult males are blue-gray on the upperparts with white underparts, have a slender dark bill, and a long black tail edged in white. Females are less blue, while juveniles are greenish-gray.
Summary adapted from Wikipedia via iNaturalist (CC BY-SA 4.0).
Field-craft tips#
- Follow the insect-hunting pattern through low shrubs.
- Use a small flexible zone or animal-eye AF; tiny birds flit constantly, so shoot short bursts.
- Sightings peak in April and May, which is when you'll have the most chances.
- Tiny subjects: get close with a hide or feeder perch rather than cropping heavily.
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 Blue-gray Gnatcatcher?
At about 11 cm long, a blue-gray gnatcatcher fills a third of a full-frame image at 10 m with roughly 975 mm, or at 20 m with 1,949 mm.
What shutter speed should I use for a Blue-gray Gnatcatcher?
1/1000 s when it's still; 1/3200–1/4000 s for action.
When is the best time to photograph a Blue-gray Gnatcatcher?
Observations in North America peak in April and May. 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