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TTL stands for Through The Lens metering. This is system where the camera measures the light on a scene based only on the light coming through the lens. Prior to TTL, there would be a light sensor on the top of the body (or a hand held unit) which measured the light coming from a fixed angle of view. The problem with this method is that it didn't take into account the angle of view of the lens in use. If a wide-angle lens was mounted, only the center of the viewed area would be used in exposure calculations, ignoring areas at the edges which could be brighter or dimmer than the center. When a telephoto (or long focus) lens was mounted, areas around the actually image would be included in the exposure calculation even though they are not included in the eventual image. TTL metering accounts for these differences by measuring light at the film plane. In more modern usage TTL is often used to refer to the flash metering system used by a camera. All of the same information applies. Nikon TTL is the Nikon camera company's version of the processing. The latest Nikon flash system is actually known as iTTL.
What else can I help you with?
Will the Nikon sb-24 rk with the Nikon d7100?
Yes, in manual or auto modes but not in i-ttl mode.
Will the Nikon Speedlight SB-24 work with the Nikon D40x?
Yes in non i-ttl auto and manual
Will Nikon sb-24 flash work on Nikon 4004s?
Yes including: Automatic Balanced Fill-Flash (with AF Nikkor lenses/Standard TTL Auto including Programmed TTL Auto.
Will the Nikon Speedlight SB-20 work with the Nikon D40?
Yes it will. It will work in auto and manual modes. TTL does not work.
Will Nikon Speedlight SB-20 works with Nikon D 3000 D 5100?
Yes in non i-ttl auto and manual.
Will a Nikon speed light SB 20 or SB 23 work with a Nikon D 90?
Yes in non i-ttl auto and manual
Will the canon powershot s5 is ttl function work with a Nikon sb-30 speedlite?
Yes, It will.
What are the compatible features of the Yongnuo YN685 flash for Nikon cameras?
The Yongnuo YN685 flash is compatible with Nikon cameras and features TTL, HSS, and wireless triggering capabilities.
What speedlights work on the Nikon d300s?
the current nikon speedlight range is thus: SB-200 SB-600 SB-800 SB-900 All will work with the Nikon D300s Older speedlights will also work, but without i-ttl mode.
Does a Nikon sb22 flash work on a nikon d60 camera?
Yes it does with non i-ttl auto (2 different f stops) and manual.
Will an old-style flash still work on a Nikon digital camera hot shoe that has I-TTL?
Generally yes, but there are exceptions. It depends on the specific flash.
What are the compatibility features of the Yongnuo YN 568EX II flash with Nikon cameras?
The Yongnuo YN 568EX II flash is compatible with Nikon cameras and offers features such as TTL mode, high-speed sync, and wireless triggering.
