E-TTL, FEL and FP flash

• E-TTL, Flash Exposure Lock (FEL) and focal plane (FP) flash are available only with type-A bodies; EOS Rebel G, Rebel 2000, Elan II(e), EOS IX, EOS 3 and EOS 1V.
• A good explanation of E-TTL:http://bobatkins.photo.net/info/faq30/flashfaq.htm.

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