Instruction Manual for Canon 10D: 

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Chapter Summary: To focus an off-center subject not covered by any of the seven AF points, follow the procedure below...This technique is called focus lock...Focus lock works when the AF mode is set to One Shot AF...... Aim the AF point over the subject and press the shutter button halfway to focus...... Keep pressing the shutter button halfway and recompose the image as desired...... If focus cannot be achieved, the focus confirmation light <●> in the viewfinder will blink...Reframe the shot and focus again...Also see “When Autofocus Fails (Manual Focusing)” on page 71......

Instruction Manual for Canon 10D Users also looked at: Page 59 - File Numbering Methods On the menu, select [File numbering...... The images you take are automatically assigned a file number from 0001 to 9999 and saved in a folder that can hold up to 100 images...The folders are numbered from 100 to 999 and saved in the CF card...The automatic file numbering method can be set to [Continuous] or [Auto reset...... Turn the < > dial to select [Continuous] or [Auto reset], then press...... Press the < > button...Turn the < > dial to select [File numbering], then press...... Select the file numbering method...... Page 43 - Changing the Review Time This chapter explains the settings for shooting digital images: Image- recording quality, ISO speed, white balance, processing parameters, color space, file numbering, and auto rotation...... Press the < > button...Turn the < > dial to select [Review time], then...press... You can set the image review time to [2 sec.], [4 sec.], [8 sec.], or [Hold] which keeps the image displayed on the LCD monitor...... Page 69 - Registering an AF Point Turn the < > dial to select the desired AF point...is automatic AF point selection...... Page 77 - Self-timer Operation During the first 8 sec., the lamp blinks and the beeper beeps slowly...During the final 2 sec., the lamp stays lit and the beeper beeps faster......