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07-05-2009, 06:02 PM   #1
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AF540FGZ settings on K10d

I'm having difficulty mastering my Pentax AF 540FGZ on my K10d.

I've got it set to P-TTL, Ch1, flash mounted on hot shoe...camera ISO set to 400, Flash Mode On, 0 compensation, WB set to flash...Shutter speed 60, f/8.0.

When I take photos in a dark room with one table lamp on, a tv running, just for trial & error. Regardless of where I point the flash, the photos are ALL Black...I get nothing at all.

I don't understand what I'm doing wrong, the flash is discharging. Changing ISO does little to nothing. Please help.

07-05-2009, 07:10 PM   #2
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while P-TTL 'works' it never gives a reasonable result for me... always underexposed... I've given up on it.

I've taken to setting the flash on Auto, ISO 400, F8, bounced and camera on manual, 1/125sec, ISO 400 and f-stop usually F7.1 (camera set to 1/3 stops) but varied to suit histogram result. This way I generally get great exposures.
07-06-2009, 05:38 AM   #3
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Thank you! I'm going to practice with that tonight.
07-06-2009, 03:59 PM   #4
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QuoteOriginally posted by HGMonaro Quote
while P-TTL 'works' it never gives a reasonable result for me... always underexposed... I've given up on it.
See this post at the Pentax UK site. May be helpful.
Digital SLR and P-TTL flash guide

07-06-2009, 06:07 PM   #5
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broken link

QuoteOriginally posted by mattdm Quote
See this post at the Pentax UK site. May be helpful.
Digital SLR and P-TTL flash guide
I tried the link in your siggy, it appears to be broken.
07-06-2009, 06:30 PM   #6
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QuoteOriginally posted by keithlester Quote
I tried the link in your siggy, it appears to be broken.
It appears there's a problem with my hosting provider. Hopefully temporary. EDIT: yes, fixed now.

That will just give you technical information on the different specifications of various Pentax and 3rd-party flashes. Very little on how to use them, except insomuch as it helps to know and understand all the features.

Last edited by mattdm; 07-07-2009 at 06:14 PM.
07-08-2009, 06:02 PM   #7
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QuoteOriginally posted by mattdm Quote
See this post at the Pentax UK site. May be helpful.
Digital SLR and P-TTL flash guide
thanks for the link. Where was this 2 months ago when I had trouble trying to figure out how to use my flash?

I enjoy your link on Pentax flashes and I will enjoy this one as well.
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