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Canon 20D Camera Settings Part Two - Custom Functions Most of the custom functions on my 20D are at the default settings. I will comment mostly on the few that I change. 01 SET BUTTON. 0:Default. 02 LONG EXPOSURE NOISE REDUCTION. Usually 0:Off. If I am doing long exposure astrophotography at high ISOs, I turn this to 1:On.
03 FLASH SYNC IN Av MODE. Auto.
I usually use flash in MANUAL mode so I control both aperture and shutter speed for the effect that I want. If I am using flash in Av (Aperture Priority) mode, I want the shutter speed to automatically adjust for the ambient light conditions. This will sometimes mean long shutter speeds. If this is not what I want, I go back to MANUAL mode.
04 SHUTTER BUTTON/AE LOCK BUTTON. Usually set to 0:AF/AE lock. Pushing the shutter button half way locks both autofocus and exposure. If I want to separate the two, I set this to 1:AE Lock/AF
so the star (asterisk) button on the back of the camera locks focus on the subject, I recompose, and the shutter button locks exposure. 05 AF ASSIST BEAM. Usually 0:Emits. If I am using flash in
minimal light conditions, the pre-flash to focus is usually not a problem. If it is, I turn it off. 06 EXPOSURE LEVEL INCREMENTS. 1/3 stop. 07 FLASH FIRING. 0:Fires.
08 ISO EXPANSION. 1:On. I try to avoid ISO 3200 due to the digital noise, but if I need it, I want it to be quickly accessible. 09 BRACKET SEQUENCE, AUTO CANCEL. Default, 0.
I prefer the 0, minus, plus sequence with auto cancel. If I know I will shoot several bracketed sequences, I set this function to 1 which gives me the same sequence order and doesn't turn off bracketing after one
sequence. I usually bracket in MANUAL mode rather than using bracketing from the menu. 10 SUPERIMPOSED DISPLAY. On. 11 MENU BUTTON DISPLAY. 1:Previous. I want the same menu
item to pop up as the last time, whether or not I turned off the camera. 12 MIRROR LOCKUP. For sports and people shooting this is set at default (0:Disable). For a lot of landscape, nature and
closeup work this is turned on. Mirror lockup is one of the most valuable features to have on a camera to prevent mirror vibration when using long lenses or doing macro work at slow shutter speeds.
13 AF POINT SELECTION. 0:Normal. 14 E-TTL II. 0:Evaluative 15 SHUTTER CURTAIN SYNC. For most flash work at flash sync shutter speeds, this is set at 0:1st-curtain sync. For
special effects at long shutter speeds, this is sometimes set to 2nd curtain sync. 16 SAFETY SHIFT in AV or TV.
1:Enable, simply as a precaution. I almost never choose Tv. In Av there is almost always a shutter speed available - but not always a good one depending on the lighting situation. In that case I change the ISO. For the kind of shooting I do, I haven't needed the safely shift but I hae it on just in case.
17 LENS AF STOP BUTTON. Default. 0:AF Stop 18 ADD ORIGINAL DECISION DATA. 0:Off
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