Buat teman2, minta info donk, brp sih GN nya 550-EX ini?
Penasaran sih.
Mau liat manual book nya, sudah hanyut entah kmana.... :((
Tulung donk...

Type Shoe mount Guide No. 138' (42 m) at 50mm 180' (55 m) at 105mm Angle of Coverage 84° (24mm in 35mm format) to 23.3° (105mm) 103° (17mm) with included wideangle adapter Auto Distance Range Full TTL at all apertures Auto f/Stops Full TTL at all apertures Vari-Power 1/1, 1/2, 1/4, 1/8th, 1/16th, 1/32nd, 1/64th dan 1/128th TTL Dedication Yes (E-TTL dan 21-zone evaluative metering with EOS-3, 1V, Elan 7/7E dan Rebel 2000; A-TTL 3-zone metering with other EOS cameras) Bounce Head Yes Swivel Head Yes Zoom Head 24-105mm (flash senses focal length dan adjusts accordingly) Off Camera Terminal No Recycle Time 8 Seconds in normal mode (based on fresh alkaline batteries dan full power) 4 Seconds in rapid mode (based on fresh alkaline batteries dan full power) Power Source Four 1.5-Volt "AA" batteries (alkaline, lithium, NiMh or NiCd) Dimensions 3.2 x 5.4 x 4.4" (81 x 137 x 112mm) WxHxD Weight 0.89 lb (403 g) ......

Kak Bny, saya selalu menggunakan link ini kalau mau cari2 info produk.
Kalau sudah nggak-ada (spt 550EX ini) krn produk lawas, go tu Support trus ke Product Archives .... lengkap deh :)

di ISO 100 full-nya 55 sama kaya mereknya hehehehe