Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
01-21-2009, 10:39 AM   #1
Junior Member

Join Date: Feb 2008
Posts: 44
K100D and AF500FTZ

Hi Folks!

I stumbled onto a nice clean AF500FTZ flash, and I've tried it on my K100D.

The flash is set for TTL and Auto Zoom. The body is set on "P".

The problem is that the flash appears to do a full power dump. All the images are almost completely washed out.

Do I have one of the settings -- on the camera or flash -- wrong?


01-21-2009, 10:48 AM   #2
Site Supporter
Site Supporter
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 17,146
the AF500FTZ only supports TTL and manual modes, and the K100 does not support TTL but only P-TTL

the flash can only work in manual mode on this body.

The flash is an excellent flash, but use on a DSLR is limited to *istD and DS which both support TTL flash.

Note TTL flash has a sensor that reads light reflected back off the film (or photo sensor UV screne) and therefore measures actual light through the lens.

P-TTL flash uses a sensor off the viewing screen (like normal metering) and a preflash before the mirror goes up, and then calculates the flash duration based upon the known open apature of the lens, the stop-ped down apature set by the camera body and the amount of light it recieves back from the preflash

  • 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!
af500ftz, flash, k100d, tripod
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Please Help with AF500FTZ TTL flash highhog1 Troubleshooting and Beginner Help 21 01-13-2011 01:42 PM
af330ftz and af500ftz pz1 Pentax Camera and Field Accessories 2 04-11-2010 12:14 AM
AF500ftz question shiestmiester Pentax Camera and Field Accessories 5 03-17-2009 08:53 AM
Pentax AF500FTZ pentagor Pentax Camera and Field Accessories 4 05-21-2008 10:29 PM
Samsung GX-1S and AF500FTZ ? Tim4Peace Pentax DSLR Discussion 0 11-09-2007 02:10 PM

All times are GMT -7. The time now is 07:36 AM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]