What is wrong with these

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willow

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ian
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As im playing around with the settings i took these two photos of my daughter

1st using the Av setting on the canon 350D 1/10 5.6

fromewalk147.jpg



2nd using the auto portrait mode 1/60 5.6

fromewalk148.jpg


Although she could done with a good scrub up before becoming my model today why are these photos so different, as she never moved in between me taking the shots
 
Not sure what you mean by 'wrong' with them?
Obviously, the first shot has a slower shutter speed (1/10) than the second (1/50), but they both have the same aperture value - f/5.6.

Because the shutter's open for longer in the first one, you've got more light in.. so it's brighter. However, it's also a little soft, so you've moved a little & introduced a bit of blur.
 
1st is taken at 1/10 second

2nd is taken at 1/60 second

I suspect the auto portrait mode bumped up the shutter speed to prevent camera shake ... or it triggered the flash ... looking again it triggered the flash.
 
when you say a little soft, what does this mean and what adjustments can be made to adjust this
 
yes it did trigger the flash.

But i would of thought that would make the 2nd photo more brighter
 
willow said:
when you say a little soft, what does this mean and what adjustments can be made to adjust this
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Lacking sharpness ... 1/10 second is slow enough to allow movement in the subject, or the photographer to introduce blurring to the shot.

The second where the flash fired is a lot crisper and sharper, the flash has prevented any blurring due to subject or camera moving.
 
willow said:
yes it did trigger the flash.

But i would of thought that would make the 2nd photo more brighter
Click to expand...

It should, I am not familiar with how Canon flash works, it could be the metering mode you have selected.
 
willow said:
when you say a little soft, what does this mean and what adjustments can be made to adjust this
Click to expand...

This means the shutter speed used was too slow to be hand held. Increase shutter speed to at least 60th second to try and get a shot that is more in focus.
With flash use aperture mode at f.8 as a starting point and see how that turns out.
 
so how do you adjust the shutter speed in Av mode, or cant you

cheers you can guess im trying to adjust the camera as im going along:)
 
Martyn... said:
It should, I am not familiar with how Canon flash works, it could be the metering mode you have selected.
Click to expand...

In Av mode i have it selected to AI Servo in the AF mode menu selection, will this make a difference if i changed it to ONE-SHOT
 
willow said:
so how do you adjust the shutter speed in Av mode, or cant you

cheers you can guess im trying to adjust the camera as im going along:)
Click to expand...

Av or Aperture Priority, means that the priority is with the Aperture setting, and the camera will take care of the shutter speed.

To get a higher shutter speed for indoor shots, you would need to increase your ISO setting, to allow the camera to select a higher shutter speed.
 
In AV mode you cannot actually adjust the shutter speed but you can adjust the ISO and the F value.

Good rule of thumb to play with is getting the shutter speed same as your focal length, so at 50mm try to get a shutter speed of 50+ so play with the apperture and ISO to achieve this.
The flash on the canon camera's is not that good but will aid your cause if you donot have an off camera flash.

spike
 
Martyn... said:
Av or Aperture Priority, means that the priority is with the Aperture setting, and the camera will take care of the shutter speed.

To get a higher shutter speed for indoor shots, you would need to increase your ISO setting, to allow the camera to select a higher shutter speed.
Click to expand...

Got you as my ISO is 400 at present.....also adjusted the AF mode to AI Focus

thanks im actually am learning something here, just got to remember it:lol:
 
It all comes with practice and actually useing the camera.

keep asking questions and posting pics its amazing how quickly it will all gel together


spike
 
willow said:
Got you as my ISO is 400 at present.....also adjusted the AF mode to AI Focus

thanks im actually am learning something here, just got to remember it:lol:
Click to expand...

Keep it simple, and take small steps ... learning with digital is easy ... alter setting, take shot, look at image and see result :D

In my day it was, alter setting, take shot, run down to Boots ... walk back one week later disappointed :D

It is just a case of practice ... and ask on here when you hit a brick wall and cannot work it out
 
The main reason the two images are different is because in the portrait mode the camera has immediately detected that the shutter speed is far too long for safe hand holding (or preventing subject movement) and has tried to bump that up, and then been forced to introduce flash to make the exposure, as the ambient is just too low.

When you're bumping along on the limit like that the camera just hasn't got any creative scope left. Need to give it some light to work with.

I would stick to one-shot, and be aware of the handholding/focal length rule, which is, your shutter speed should not be longer than the focal length x crop factor, ie 55mm x 1.6 = 1/88sec.
 
Less ambient light getting through in the second one due to faster shutter speed, but flash has lit up your daughter's face.
 
Camera shake is evident in the first pic. Modern cameras should have no problems with focusing. if its a focus problem i.e. wrong focal point some part of the picture will be sharp. If none of the picture is sharp its probably camera shake caused by the shutter speed being too slow . As a rule of thumb your shutter speed should match the focal length of your lens. 50mm lens 1/50th second shutter speed. 100mm lens
100th second shutter speed. Even this won't always work if your stood or holding the camera incorrectly.
 
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