Sigma 50/50e 3 Other Camera Controls & Features

3)Auto DX ﬁlmspeed setting 0 = on,1 = off

4)Use of* button

0 = AF start with shutter button,exposure lock with "*" button

1 = AF start with "*" button,exposure lock with shutter button

2 = same as 0, plus DOF check with "*" button

5)Mirror lock withself timer

0 = normal ten second self timer,

1 = mirror locks up and the self timer becomes two seconds

6)Second curtain ﬂash sync 0 = off, 1) = on

7)AF assist beam 0 = off,1) = on

8)Spot & FELto focus point

0 = Partial meter & Flash Exposure Lock at center point only

1 = Partialmeter and FEL follow the active AF sensor

9)Force 1/125 sync inAV mode

0 = In Avmode with ﬂash providesfull ambient exposure

1 = In Avmode the shutter is lockedat 1/125 second

10)AF indicatorlights 0= off,1) = on

11)Eye controlDOF preview 0 = off, 1) = on (Elan IIe only)

3 Other Camera Controls & Features

Just behind the top mounted LCD are two thumb buttons. The one on the left is the

AE Lock button. It’s marked with a "*-cf" symbol. The "cf" part of the symbol is to

denotethat itis usedto set the values of the custom functions, explained above. When

the camera is not set to the CF mode on the CommandDial, the AE Lock button can

do several things. Its primary purpose is to set the exposure for one scene and then

recompose the picture. This works particularly well with partial metering where you

wantto meter a subject but compose the scene with the subject off center.

Normallypressing the shutter buttonhalf way activates autofocus, and pressing the

AE Lock buttonlocks the exposurevalue that is determined by the camera’smetering

system. This is called Auto Exposure Lock (AEL). However,if custom function #4 is

setto "1" the functions are reversed. The primary reason you might want this is to move

yourauto focus away from the shutter button. That way youwould only reactivate AF

when you wanted to, not every time you press the shutter. If you couple this with

Canon’sUSM lenses that allow Full Time Manual focusing (FTM), you can autofocus

bythe push of the "*" button, and manually focus by turning the focus ring on the lens,

all without switching the AF/MF switch on the lens. This may not sound like a big

deal, but for manyphotographers this is the primary reason to buy Canon equipment.

Thelow end line of Canon lenses use a micro motor USM that does not allow FTM, so

payattention to whatyou’re putting your money down for. USM stands forUltraSonic

Motor.They are nearly silent and the mid and upscale ones are fast!

Nikon has recentlystarted selling a few Silent Wavelenses that are essentially the

same thing as USM. Only some of the high-end lenses have this "S" designation and