Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-24-2011, 10:11 PM   #1
Veteran Member




Join Date: Jul 2011
Location: DMV
Photos: Albums
Posts: 431
What do you use the Av(+/-), AF/AE-L and Green button on K-x for ?

Av - I guess is used for adjusting aperture in manual mode with the dial. Not sure what +/- means ?
AF/AE-L - Autofocusses like half pressing shutter, but what does AE-L do and work ?
Green - I can configure from menu, but what do you guys configure it to ?

08-24-2011, 10:32 PM   #2
Forum Member




Join Date: Dec 2010
Location: Portland, OR
Posts: 90
QuoteOriginally posted by StDevious Quote
Av - I guess is used for adjusting aperture in manual mode with the dial. Not sure what +/- means ?
AF/AE-L - Autofocusses like half pressing shutter, but what does AE-L do and work ?
Green - I can configure from menu, but what do you guys configure it to ?
AF/AE-L is also configurable. I set mine to AE-L in all modes. This locks exposure when you press it, so it doesn't re-meter if you pan away. I use it in funny exposure scenarios, in sort-of a screwed up version of the zone system. In very contrasty scenes I pick a shadowed spot, and lock exposure there, then recompose. It takes a little screwing around to figure out which shadow to use, though.

I have green set to "optical preview", because I use a couple of old K, M and M42 lenses. This stops the lens down and lets you take an accurate meter / focus of the shot you will actually get. When using the old lenses (aperture ring lenses without a chip) in manual mode, the AV+/- button (up on the top of the camera) becomes like an automode setting. It stops down, meters, and sets the shutter as though you were in aperture priority mode. I do this to get close to correct exposure then chimp and fiddle from there.

In manual mode with electronically controlled apertures (newer lenses), AV+/- lets you switch between changing aperture and shutter speed. In Aperture Priority and Shutter Priority mode, it switches between changing the dominant setting (aperture or shutter) and changing the exposure bias. That EV+ or - value. Basically, lets you over or underexpose an image a little. I tend to shoot mine a little over in camera, then bring them back down in post. Google 'expose to the right' for a better explanation of why this is a good thing in many cases.

Also... GO RTFM! All of this is explained in that little book you got. *glare*
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
af/ae-l, av, camera, configure, dslr, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Green button or +/- button for meter? kidblue Pentax SLR Lens Discussion 15 07-29-2011 07:10 PM
Help -- Where is the green button? gramar Troubleshooting and Beginner Help 4 03-09-2011 08:30 AM
Green button - who really uses it? jpzk Troubleshooting and Beginner Help 45 01-07-2011 01:59 PM
Green button fekish Troubleshooting and Beginner Help 4 10-06-2010 03:33 PM
SR and green button slow2focus Troubleshooting and Beginner Help 7 12-12-2009 11:56 AM



All times are GMT -7. The time now is 03:12 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top