
Powerextra DF-400
Score: 59/100
Godox GN33
Score: 68/100Rankings

The Godox TT520III provides an affordable, compact flash with 33 m guide number and built-in 433 MHz wireless triggering. It lacks TTL, high-speed sync and a built-in diffuser, limiting its use for advanced lighting setups. Suited for budget-conscious DSLR shooters needing a portable fill flash and basic wireless capability.

The Powerextra DF-400 is a budget manual speedlite offering a GN33 output, full head swivel and a 18-180 mm zoom range. Its trade-offs include the absence of TTL, high-speed sync and a relatively slow full-power recycle. It is best for beginners and hobbyists needing an affordable, versatile flash for indoor and off-camera use.
| Attribute | ![]() | ![]() |
|---|---|---|
33 mbest | 33 mbest | |
| ↓ lower better | 3 seconds | 1.8 secondsbest |
| ↓ lower better | 315 gbest | — |
8best | 8best | |
— | 20 mbest | |
5,800 Kbest | — | |
3best | 3best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(1) | ||
Recycle Time (seconds) | 3 seconds | 1.8 seconds |
Battery & Power(1) | ||
Battery Type | 4× AA alkaline | AA |
Design(1) | ||
Dimensions (L×W×H) (mm) | 190×75×55 mm mm | 2.95x7.5x2.15 inches mm |
Lighting(1) | ||
Flash Duration (ms) | 5-0.05 ms | 1/510-1/31000 ms |


Products in the top-left offer the best value (high score, low price).

Professional reviewers consider the Powerextra DF-400 a solid entry-level flash that offers good value for its price, thanks to its GN 33, full head swivel, and wireless slave capabilities. However, they note significant drawbacks such as the lack of TTL/HSS, a relatively slow full-power recycle, and a plastic build that feels less robust than competing models.
Everyday users praise the flash for its low price, long battery life, and ease of use across many camera brands, while repeatedly criticizing the cheap plastic construction, slow full-power recycle, and inconsistent performance at very high shutter speeds.
“Cheap entry ($26) and great battery life up to 1500 flashes”

