Go Back   Steve's Digicams Forums > Digicam Help > Newbie Help

Reply
 
Thread Tools Search this Thread
Old Dec 7, 2004, 3:42 PM   #1
Senior Member
 
Join Date: Nov 2004
Posts: 185
Default

Can anyone please explain what mirror lock is and what it does.I have a Canon EOS 300D with the kit lens and a 70-300mm f/4-5.6 APO Zoom Macro Super II.

I have updated to the russian hacked firmware and have an option inthere for mirror lock.



Thanks



Nick
gaida is offline   Reply With Quote
Sponsored Links
Old Dec 7, 2004, 3:55 PM   #2
Senior Member
 
CastleDude's Avatar
 
Join Date: Feb 2004
Posts: 321
Default

In order to be a SLR there is a mirrorthat reflects the image up to the finder like a periscope.

When you push thetrigger button the following happens:
1) The mirror flips up
2) The shutter opens and exposes the focal plane to the image
3) The shutter closes
4) The mirror returns down.

The mirror lock allows you to flip up/down the mirror manually and then pushing the trigger only opens and closesthe shutter. Obviously the finder is not operating when the mirror is up.

---------------------

When the mirror moves the camera will shake a little bit. So you usually do this when you are on a tripod and where the movement will show up on the picture. Some examples would be a very large (1000mm telephoto or telescope) shot where any movement gets translated up. A night shot of a street with streetlights where you are doing a long exposure (the lights may show the movement of the mirror).

You can also use the self timer for this feature since most cameras flip the mirror at the start of the self timer and then return it after the shot.
CastleDude is offline   Reply With Quote
Old Dec 7, 2004, 4:18 PM   #3
Senior Member
 
Join Date: Nov 2004
Posts: 185
Default

wow,thanks for the answer.it couldn't have been clearer.



Nick
gaida is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 5:37 AM.