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TZ3 - Indoor picture issue

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Bonnie RobinVergeer

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I was taking some indoor pictures (in my house, of my kids). I set the ISO level to 100. Even though the flash fired, the pictures were quite dark. So then I reverted to Auto ISO. The light problem was solved, but I noticed that the camera was selecting ISO levels like 640. That seems very high, and the picture quality goes down. On my previous digital camera, when the ISO level was set to Auto, the camera usually selected levels between 100 and 200 for indoor house shots.

Any suggestions?
 
Bonnie,

Try the Slow Sync redeye flash option instead of the Auto red eye one. On my FX01 I get a lower ISO and a more completely illuminated picture at distance although at a cost of a much slower shutter speed and the potential for blurred subjects. Auto flash uses a comparitively quick shutter which forces the ISO up.

--Bob

 
If I'm not mistaken, you should be able to set a limit for the auto-iso .. Like 400. Then the camera cant pick a iso level above 400.

I think TZ3 is able to do that.. Or so I've heard.
 
max of 400 if it wants.

I find Intelligent ISO to almost always use an ISO higher than necessary, which causes a picture that is too bright.
 
Can you give some examples on I-iso with the aperture and shutter speed combinations that it chose that made the ISO too high.

Thanks,
terry
 
Yes , I can, but I have an FX30. It might be slightly different in the TZ3, but I doubt it... since the I-ISO is new on both of these cameras.
 
I look at these and think something completely different and that the auto ISO wasn't too bright. I thought it doesn't really matter exactly what you saw but depending on what it was metering the exposure off of, that is what it would set to the neutral grey. So just because the scene wasn't as bright to the eye if you spot metered on the monitor or had multi on the whole scene you would get very different results.

Any thoughts?
 
Auto ISO is different from INtelligent ISO.

Look again at the pictures. Auto ISO took the picture at ISO 200, Intelligent ISO took the same pic at ISO 800.
 
Yes, that is true about the metering. But the focus was on the book, so I judged my final picture from what the book actually looked like vs what the picture looked like.
 
Even though the focus was on the book do you think the iISO was picking up the refresh from the monitor as some sort of motion in the frame?
 
Nope, I doubt it...

LCD monitors aren't like CRTs, no refresh rate. The backlighting is constant basically...

I've also taken other pictures (without my monitor in question) that I haven't had a chance to upload, but the same happens. I-ISO picks a higher ISO which results in overly bright picture.

But perhaps the I-ISO also takes into account motion blur from the user, so that it would up the ISO in the hopes having a faster shutterspeed with the combination of OIS to produce a non-blurry photo. That is certainly possible, as I haven't take any photos on a tripod.
 
I don't know what they have done with the TZ3, but the TZ1 always flash syncs at 1/30 second shutter speed reguardless of ISO. You can use either auto ISO, or any other manual setting according to the amount of exposure you need. But the shutter is always 1/30 of a second.
--
Steve Owen.
http://steveslandscapes.50webs.com
 
Yes, I noticed the shutter speed was set to 1/30. Is that too slow to avoid blurry pictures even with the anti-shake on? But I was more struck by the 640 default ISO. The lighting of the pictures in auto mode was just fine, though.
 
1/30 is very fast (IMO).

The OIS compensates for my personal camera shake to 1/8s shutterspeed. I can do 1/4s shutterspeed about 50% of the time, but 1/8 is almost guaranteed (80%) with little/no handshake blur.
 
The TZ1 stops with Flash, and auto ISO at 400. But there is nothing wrong with your camera if it is selecting ISO 640, as long as the exposure is good, and not washed out.

Actually the shutter speed with indoor flash is not the real factor in exposure, or blurring. The exposure is actually determined by the flash time rate, which is around 1/20,000 of a second. You can turn off the OIS, and still have no hand shake.

How much flash duration effects the exposure is related to how much additional light you have. I have seen bullets fired from a gun, stopped in mid flight with electronic flash in a totally dark room. In a well lighted room it would have less effect on duration, but even at 1/30 second you could get by without the OIS.
--
Steve Owen.
http://steveslandscapes.50webs.com
 
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