Due to the large pentaprism, the top cover is a newly designed, dedicated cover havinga bulge on the hot shoe area. It is 0.12 in./3mm taller than the EOS-1D Mark III and 2mmtaller than the EOS-1Ds Mark II. As with the EOS-1Ds Mark II, the "Ds" and "Mark III"nameplates are gold-plated.IV. DISCUSSION OF NEW AND IMPROVED FEATURES 19Design and ConstructionWith E-TTL II With TTL (With Flash C.Fn settings C.Fn-5-1)Item Description Item DescriptionFlash mode E-TTL II / Manual flash / MULTI flash ….. Flash mode ….. MULTI flash / TTL / AutoExtFlash…..1st curtain Flash output 1/4..1/2..1/12nd curtain 1st curtainHi-speed 2nd curtainFEB -3. . 2 . . 1 . . 0 . . 1 . . 2 . .+3 High-speedFlash exp. Comp -3. . 2 . . 1 . . 0 . . 1 . . 2 . .+3 Zoom Auto/24/28/35/50/70/80/105 [mm]Evaluative EnableAverage DisableZoom Auto/24/28/35/50/70/80/105 [mm]Wireless func.: Enable/DisableMaster flash: Enable/DisableChannel: 1/2/3/4chFiring group: A+B+C/A:B/A:B CA:B fire ratio: 8:1, 4:1, 2:1, 1:1, 1:2, 1:4, 1:8 Item DescriptionGrp.C exp. comp: -3..2..1..0..1..2..+3 Flash mode ….. TTL / AutoExtFlash / Man.ExtFlashEnable FEB -3. . 2 . . 1 . . 0 . . 1 . . 2 . .+3Disable Flash exp. Comp -3. . 2 . . 1 . . 0 . . 1 . . 2 . .+3Zoom Auto/24/28/35/50/70/80/105 [mm]EnableDisableFlash mode E-TTL II / Manual flash / MULTI flash …..Flash output 1/128..1/64..1/32..1/16..1/8..1/4..1/2..1/11st curtain2nd curtainHi-speed Item DescriptionZoom Auto/24/28/35/50/70/80/105 [mm] Flash mode ….. TTL / AutoExtFlash / Man.ExtFlashWireless func.: Enable/Disable Zoom Auto/24/28/35/50/70/80/105 [mm]Master flash: Enable/Disable EnableChannel: 1/2/3/4ch DisableFiring group: A+B+C/A:B/A:B CGroup A output: 1/128……………….1/1Group B output: 1/128……………….1/1Group C output: 1/128……………….1/1EnableDisableWith MultiFlashFlash mode ….. Manual flash / MULTI flash / TTL …..Flash output 1/128..1/64..1/32..1/16..1/8..1/4..1/2Frequency 1 - 199 HzFlash count --, 1 - 100 timesZoom Auto/24/28/35/50/70/80/105 [mm]Wireless func.: Enable/DisableMaster flash: Enable/DisableChannel: 1/2/3/4chFiring group: A+B+C/A:B/A:B CGroup A output: 1/128……………….1/1Group B output: 1/128……………….1/1Group C output: 1/128……………….1/1EnableDisableWireless set.* The flash output applies to 1/4 to 1/128 in whole-stop increments.(The display shows 1/2 to 1/128 in 1/3-stop increments.)INFO. Clear Speedlite settingsE-TTL IIFlash firingINFO. Clear Speedlite settingsINFO. Clear Speedlite settingsShutter sync.Wireless set.Flash function settingsFlash firingFlash firingShutter sync.Shutter sync.Flash firingINFO. Clear Speedlite settings* Flash output will be fixed at 1/1. (Displayed from 1/4 to 1/1.)INFO. Clear Speedlite settingsFlash firingFlash firing(With Flash C.Fn settings C.Fn-5-2)(With Flash C.Fn settings C.Fn-5-3)With external Speedlite set to autoflashWith Manual FlashWith external Speedlite set to MINFO. Clear Speedlite settingsWireless set.Flash Function Settings (with 580EX II)Magnesium Alloy Exterior Exterior Covers and Internal Construction