How to choose your first wildlife telephoto lens

Start with subjects, distance and the way you carry kit

List the wildlife you realistically photograph, typical shooting distances and whether you walk long distances, use a hide or work near a vehicle. Reach matters, but a lens that is too heavy or awkward to carry may spend more time at home. Ethical distance still applies no matter how long the lens is.

Check compatibility with your camera, autofocus performance and the effective field of view on your sensor. Compare maximum aperture across the zoom range, stabilisation, minimum focus distance, weather resistance and the availability of service or spare parts. Specifications should support your use, not define it.

Test handling before judging image samples

If possible, rent or borrow the exact lens. Try acquiring a moving subject, changing settings with your eye to the viewfinder and holding the combination in your normal shooting position. Assess balance and controls as well as sharpness. A slightly less ambitious lens can be the better tool when you use it confidently.

Budget for the complete setup: a suitable support if needed, protection, cleaning and any additional batteries or storage. Do not assume a teleconverter is a free upgrade; confirm compatibility and understand its effects on aperture, autofocus and image quality with your exact combination.

• Define realistic subjects and shooting distances.
• Check camera compatibility and zoom-range aperture.
• Compare weight, balance, stabilisation and controls.
• Test with moving subjects before buying.
• Include support, protection and service in the budget.