Bigfoot1966 wrote:I have a Pentax ist ds
I am having trouble with my external flash.(Sigma EF-500 ST)
Most of the pictures I am taking are over extremely exposed.
I have tried bouncing the flash off the ceiling. Some times works.
Tried adjusting the camera back half a stop. Sometimes works.
Tried pulling out the de fuser - Sometimes works.
I have found one of the problems is the ISO can not be left on Auto as it chooses 400 - 800 at random and then the pic is VERY over exposed.
So leaving it on 200 seems to have the better results.
When I look at the properties of the over exposed pictures, it appears that the camera does not know there is an external flash ...
As in the properties it says flash did not fire automatically.. When it did..
Is there a secret to using this flash ?
Is there a rule of thumb manual setting I should use ?
Thanks for any help!
Bigfoot1966 wrote:I bought the Flash Brand new,
Cr Kennedy (Leederville) Perth Suggested I buy that one...
Talked to them about the problems.
He suggested pointing the flash straight up to bounce off the ceiling.
Or put a tissue over the flash to calm it down a bit..
A lame way to fix my problem.
The connection is clean and tight.
Ivanerrol wrote:Two things that may help you or muddy the waters further.
I got this reply from Big Red regarding which flash to use on a K100d
You need a Sigma EF500DG Super or pentax 360FGZ or pentax 540FGZ to work on the K10D or K100D but the *istDS can use ttl flashes.
In the menu structure of the D70 and D80 Nikons, there is a section that enables alternatives for what type of external flash working is too be used - either manual or TTL. There may be a similar section in the Pentax menu.
Robert wrote:Pretty little lady, you have.
Can I also presume
1. that the light was off in the room but it was not too dark?
2. that the flash was pointed directly at the child
3. the child was about 2 meters from you
others in these forum would be better at understanding the issues.
looking at your exif data.
On the first shot used focal length of 45mm 1/60 iso200 f14 EV0
How close was she to you? I presume about 2 meters?
On the second shot used focal length of 45mm 1/60 iso200 f16 EV-1.7
What happens if you set the flash to FILL?
What Flash setting are you using (on the flash itself)? The Exif data does not sure this.
If I remember correctly, they is balace fill option and full automatic option and manual - On the EF 500 DG.
Also what happens if you use the on board flash - on AUTO?
I will pull out my Nikon and see if i could replicate it? I have yet to try f16 1/60 iso 200. Well I don't think I have.
I thing your flash is DUMPing the full load every time the flash goes off.
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