Quick answer
Choose the Nikon Speedlight SB-19 if you shoot with a classic Nikon SLR like the FG or EM. Pick the Olympus Electronic Flash T20 if you use an Olympus OM series camera and want the lightest T-series flash.
Design and compatibility
Both flashes are shoe-mount units designed for specific camera systems. The Nikon SB-19 was made for Nikon 35mm film SLRs from the early 1980s, such as the FG, FG-20, and EM. The Olympus T20 pairs seamlessly with Olympus OM series cameras and is the most compact and lightweight flash in the T series.
If you own a camera from a different brand, neither flash will offer automatic exposure control—they are system-specific. For cross-brand use, you would need to rely on manual mode, which is possible but less convenient.
Exposure control
The Nikon SB-19 provides automatic flash operation that takes the guesswork out of exposure when used with a compatible Nikon body. It supports ISO 25 to 1600, making it versatile for various film stocks.
The Olympus T20 also features automatic exposure control for compatible Olympus cameras. This helps deliver consistent results in low-light and indoor situations without manual adjustments.
Size and weight
The Olympus T20 is described as the most compact and lightweight flash among the T series. This makes it an excellent choice for photographers who prioritize portability.
The Nikon SB-19 is also a compact shoe-mount unit, but specific weight and dimensions are not provided. In general, both are small enough to carry easily, but the T20 has a clear edge in lightness.
Tradeoffs at a glance
- System compatibility: The Nikon SB-19 is built for Nikon SLRs; the Olympus T20 is built for Olympus OM cameras. Neither works automatically with other brands. Match the flash to your camera system for full automatic features.
- Portability: The Olympus T20 is the lightest T-series flash, ideal for travel or street photography. The Nikon SB-19 is compact but not specified as the lightest in its line. Choose the T20 if weight is your top priority.
- ISO range: The Nikon SB-19 covers ISO 25 to 1600, giving you flexibility with different film speeds. The Olympus T20's ISO range is not stated, so it may be more limited. If you shoot various film speeds, the SB-19 offers more documented flexibility.
Product facts
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Olympus Electronic Flash T20: The Olympus Electronic Flash T20 is the most compact and lightweight flash in the T series. If you shoot with an Olympus OM camera and want to minimize bulk, this flash is the lightest option available.
Olympus Electronic Flash T20
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Nikon Speedlight SB-19: The Nikon Speedlight SB-19 supports ISO 25 to 1600 and was designed for Nikon SLRs like the FG and EM. This wide ISO range means you can use it with many film types, from slow slide film to fast black-and-white stocks.
Nikon Speedlight SB-19
Which one fits you?
Best for
- Nikon SLR owners who want automatic flash with wide ISO support
- Photographers who value documented ISO flexibility (25–1600)
Not for
- Anyone who needs a flash for a non-Nikon or non-Olympus camera with automatic exposure
