subject to dark question

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egor110

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Last weekend at the grandprix my camera was coming up with subject to dark.

I was shooting 1/250th and had it on shutter priority, if this happens what should i do and how can i avoid it in the first place?
 
What aperture was the camera selecting and did it hit the lowest F number your lens can do?
Also, was the ISO on auto or did you set it yourself?
As for example if you set on ISO 100 and your lens only went down to F3.5 there may not have been enough light for 1/250.
Your choices are upping the ISO or lowering the Aperture (assuming it is not maxed)
 
Exposure compensation is alway helpfull when shooting in semi-automatic modes, but always check your screen and histogram to get it right.
 
As ernesto said..
When your are in shutter priority and you have it set to 1/250th your camera will do as its told and expose for 1/250th of a second. If you lens only go's down to f5.6 it will still take the shot at f5.6 for 1/250 which may well be underexposed.
I tend to use Auto ISO when shooting this way if I am in any doubt about the available light.
If you shot in RAW you can probably get a fair bit back, and if all your shots are pretty much underexposed by the same amount you can work on one and batch process the rest in one go.
 
Some of the exif from the grand prix:

1/250 f/9.0 iso 400

1/250 f/10.0 iso 400

so if it flashes subject too dark my options are pick a slower shutter speed or pick aperture priority and let the camera pick the best shutter speed?
 
with those settings it wouldn't have been hitting any of the cameras limits and simon is probably right in that it was metering but may have been evaluative and affected by sky. Was there a lot of sky in shot affecting the metering or was the whole image dark in which case exposure compensation could have been used.
 
No there was no sky in the shot, i was sitting in a grandstand looking down at the track.

Not sure why but i can't copy and paste on my laptop but if you go to flickr my photostream is egor110
 
Basically those settings are, well, too dark for the conditions.

If it's a dull day (I assume it was - British summer and all) you really need to be shooting with the lens wide open AND upping the ISO AND lowering the shutter speed...
 
Nawty said:
Basically those settings are, well, too dark for the conditions.

If it's a dull day (I assume it was - British summer and all) you really need to be shooting with the lens wide open AND upping the ISO AND lowering the shutter speed...
Click to expand...

Don't agree as sounds like you are suggesting a recipe for massive over exposure. For example this would fit your suggestions
f3.5, 1/100 and 800 ISO. For outdoor use even on a dull day that is not going to work.

ISO was already high (400) for outdoors use at 1/250. The only action required would be to lower the aperture as there is a lot of room for movement if using f10. Or just use exposure comp and let the camera do it for you.
 
egor110 said:
No there was no sky in the shot, i was sitting in a grandstand looking down at the track.

Not sure why but i can't copy and paste on my laptop but if you go to flickr my photostream is egor110
Click to expand...
I had a quick look at several pages and I don't see a problem. There are some variations, and possibly some room to finesse the exposures, but all in all they look pretty solid and certainly not systemically underexposed. There may be the odd one or two where an unusually bright/reflective area has forced a little underexposure, but nothing dramatic.

Of course, if you've edited them then it's kind of hard to make judgements, but as presented I'm not seeing a problem.
 
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