Why my photo is darker??

[tirediron]

Is the EC function on the OP's camera one which could be inadvertantly activatedby an errant finger?

 

[invisible]

Can you post the ISO settings for each of the images?

If ISO settings are identical, then the only explanation would be differences in available light (cloud passing, etc.).

 

[adikrist]

No, this weird case only happens few times, not always.. i took good photos with the same camera as well.

And, yes.. the ISO are the same in each image. ISO 200.

@tirediron: What EC function?? I dont understand your question.

Well, i dont think it was cloud passing as she took my pic only few seconds after i took hers. Or, is it related to the focusing? I mean would it make difference if i focused on her eye, and she focused on my body for example?

 

[ann]

with canon, the EC function is not easy to apply.

this is a very strange happening . from the metadata a change is being made, the question is how as the OP insist this is not happening, but it isn't logical.

Someone is somehow making a change, unknowning, but a change.

 

[vtf]

Just a thought but I took some landscape shots and one turned out with a brighter blue sky than the rest. Come to find out that I had forgotten about the polerized filter I had on and I accidentally adjusted it when I manually focused, hence causing a bluer sky but changing all the settings along with it.
Does it ever get darker when you take her picture?

 

[adikrist]

Just a thought but I took some landscape shots and one turned out with a brighter blue sky than the rest. Come to find out that I had forgotten about the polerized filter I had on and I accidentally adjusted it when I manually focused, hence causing a bluer sky but changing all the settings along with it.
Does it ever get darker when you take her picture?

No, her picture never darker than mine. Very strange!!

 

[tirediron]

No, this weird case only happens few times, not always.. i took good photos with the same camera as well.

And, yes.. the ISO are the same in each image. ISO 200.

@tirediron: What EC function?? I dont understand your question.

Well, i dont think it was cloud passing as she took my pic only few seconds after i took hers. Or, is it related to the focusing? I mean would it make difference if i focused on her eye, and she focused on my body for example?

EC = Exposure Compensation; a function which allows you to increase or decrease the pre-determined exposure by a user-specified amount to acheive a certain effect. I had thought it might possible that one of you was accidentally activating this function by the way you're holding the camera, but apparently on Canon camera's, that isn't likely.