How do I choose a ring flash for macro photography with a Nikon D7200?

For macro, the key things to consider are how you shoot and how much control you want.

If you photograph still subjects and have time to test exposure, almost any ring flash can work because close-range macro doesn’t need huge power. If you shoot handheld outdoors or photograph moving subjects like insects, a flash that supports Nikon TTL is much more convenient because it can auto-adjust exposure.

Useful features:

• low minimum power output, so you don’t overexpose at very close distances
• TTL compatibility for easier handheld or fast-changing situations
• left/right tube control or half-ring firing, which gives side lighting and avoids the very flat look of a full ring

Also consider alternatives:

• LED ring lights can work for very close subjects and are often cheaper, though they aren’t true flash units
• ring-flash adapters for a separate hot-shoe flash can be a simple budget option; they keep TTL if your main flash supports it

Be cautious with older non-TTL ring flashes, especially used ones: some don’t reduce power enough for modern close-up work and can force overly small apertures or low ISO while still overexposing.