Sigma C21EN0291 User Manual

If you want to take the picture of a subject, which is out of the focus detecting 
area, use focus lock function. This function can be used only in 

  (single AF 

mode) 

1 

Compose the desired focusing subject in the center of viewfinder and then press the 
shutter button “Half-way”. 

2 

Keep the shutter button depressed “Half-way” while you compose the picture as 
desired. Then press the shutter button the rest of the way to take picture. 
 

 
 

In situations, where autofocus or focus lock are not effective, you can focus 
manually. 

1 

Set the focus mode switch, on the lens to the M 
position (AF mode mark will disappear from the 
LCD panel). 

2 

While looking through the viewfinder, turn the 
focusing ring on the lens until you get a clear 
sharp image. 

 

When you use a lens, which has maximum aperture of F5.6 or faster, the focus 
indicator in the viewfinder will appear, when correct focus is attained. 

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