View Full Version : Help a girl out part 2
miller00
2nd of January 2008 (Wed), 22:03
Okay so I did the focus chart and in following the instructions I put my camera on AV and low and behold.. this happened. http://i3.photobucket.com/albums/y85/Miller00/what.jpg what does this mean I don't get it? It my camera broken? Why would it turn out so dark? Any Ideas?
TooManyHobbies
2nd of January 2008 (Wed), 22:14
You had a -2 exposure bias value per your exif. Hold the shutter button half way and bring the bias back to 0.
Always willing to help out a cousin.
-Jeff Miller
PhotosGuy
3rd of January 2008 (Thu), 10:48
In a controlled situation like that, I'd use M & chimp the exposure to the right so that the white will be white.
SQMazda6
3rd of January 2008 (Thu), 11:43
Shutter speed to fast slow it down a little to let more light in .. or TURN UP THE LIGHTS :) up to you :)
miller00
3rd of January 2008 (Thu), 23:31
Okay
Sorry I am so stupid but it feels like my camera doesn't preform like it should. I see pictures with people shooting under Much lower lighting and their pictures look fine. But
It's almost like my sensor is dark I don't understand it. It take a lot to light up my pictures so it is like I can barely handhold stuff because my shutter speed has to be so slow to make up for the "dark" Any Ideas?
sadatk
3rd of January 2008 (Thu), 23:37
Okay
Sorry I am so stupid but it feels like my camera doesn't preform like it should. I see pictures with people shooting under Much lower lighting and their pictures look fine. But
It's almost like my sensor is dark I don't understand it. It take a lot to light up my pictures so it is like I can barely handhold stuff because my shutter speed has to be so slow to make up for the "dark" Any Ideas?
Give some example pics. From what I gather, you have a -2 EC bias so it's making the images a lot darker than it should. To help your shutter speed, increase your ISO speed.
doidinho
3rd of January 2008 (Thu), 23:47
From what I can make out it looks like your setup passed the focus test w/ flying colors
miller00
4th of January 2008 (Fri), 00:13
But the thing is.. I don't think it is is -2...how can I make sure it isn't?
mellowd
4th of January 2008 (Fri), 00:14
Check your exposure meter through the viewer. It should be on 0
shannyD
4th of January 2008 (Fri), 00:17
what camera are you using.. they sell books that go into great detail on how to use your camera. and they really break it down so its easy to understand.. whatever the case is. you should get one. i used to have the same problem, and i thought it was my cameras fault. but it was mine.
getting a book for my camera was one of the smarter things i have done since picking up a camera.
shannon
sadatk
4th of January 2008 (Fri), 00:34
Your first pic you posted had a -2 EC and thus it was really dark.
Make sure it's at the the very center.
http://i11.tinypic.com/8a00sp4.jpg
To do this, set your camera on switch to the mark right above ON. It should look like /-- or something of that sort. Then press the shutter release half way and then use the wheel to move the EC back to the right so it's in the middle.
miller00
4th of January 2008 (Fri), 01:02
Yea okay it is on 0 but it always is..I don't know why it was at -2... So is there no such thing as a dark sensor?
sadatk
4th of January 2008 (Fri), 01:12
Yea okay it is on 0 but it always is..I don't know why it was at -2... So is there no such thing as a dark sensor?
Post some more example images.
rammy
4th of January 2008 (Fri), 07:42
So is there no such thing as a dark sensor?
No, there isn't.
Basically, the three functions/areas that control how dark or light an image will be is Aperture, Shutter Speed and ISO. Change one (increase or decrease) without changing any of the others and the image will either darken or lighten. This is because, simply put, these three determine the amount of light that hits the sensor, or how sensitive the sensor is to light.
Imagine a glass (the sensor) and some water in a jug (light). When the glass is half full, then lets say that is the "correct exposure". Assuming that the water is poured into the glass at a constant rate (c = universal constant for speed of light - in a vacuum, but forget that) and quantity.
The wider or narrower the opening of the glass, the more or less the quantity of water will enter into the glass. This is the aperture.
The taller or shorter the glass the longer or shorter time you have to pour for. This is the shutter speed.
ISO, is a little different in that this determines how sensitive the sensor is to the amount of light hitting it. The more sensitive the sensor, the more light it can pickup in a shorter time, the less sensitive the sensor, the less amount of light the sensor can pickup.
In your case, the glass is not getting near to half full and so not enough light (water) has entered the sensor (glass).
If you are trying to take a picture in the dark (low light) then you need a wide aperture, a longer time (shutter speed) and a higher ISO (sensitive sensor).
If the image is coming out blurred because the shutter speed is not fast enough to hand hold then you need a much wider aperture (F1.2 for example) and a high ISO, 1600 for example with a decent shutter speed. If this is still not quick enough then you need a Flash unit to illuminate more and so provide more light to enter onto the sensor in a quicker time.
Any help?
Village_Idiot
4th of January 2008 (Fri), 12:11
Maybe the exposure correction could have been changed too.
TooManyHobbies
4th of January 2008 (Fri), 13:17
Did nobody read the second post?
sadatk
4th of January 2008 (Fri), 13:29
Did nobody read the second post?
Give some example pics. From what I gather, you have a -2 EC bias so it's making the images a lot darker than it should. To help your shutter speed, increase your ISO speed.
But the thing is.. I don't think it is is -2...how can I make sure it isn't?
Check your exposure meter through the viewer. It should be on 0
Your first pic you posted had a -2 EC and thus it was really dark.
Make sure it's at the the very center.
http://i11.tinypic.com/8a00sp4.jpg
To do this, set your camera on switch to the mark right above ON. It should look like /-- or something of that sort. Then press the shutter release half way and then use the wheel to move the EC back to the right so it's in the middle.
Yea okay it is on 0 but it always is..I don't know why it was at -2... So is there no such thing as a dark sensor?
Yeah we did.
argyle
4th of January 2008 (Fri), 14:17
Did nobody read the second post?
Not trying to be a smarta**, but did the OP ever read the manual that came with the camera? Lot's of relevant info in there. I'd also suggest getting a good book on exposure basics. Even though consumer-grade cameras have gotten more advanced, they still cannot make all of the decisions needed to capture a good image. A proper understanding of exposure and metering is still necessary...
miller00
4th of January 2008 (Fri), 15:36
Hey guys sorry to sound like such a noob..I actually know all the stuff about exposure.. and yes I have read my manual. My question was can different sensor react to light differently. Example.. If I have the same camera as "Joey" and same lens and we are shooting the same thing will our exposure be the same? That's all I was wondering It just feels like it takes more to make my pictures light enough. I really do know about photography haha
rammy
4th of January 2008 (Fri), 15:51
Hey guys sorry to sound like such a noob..I actually know all the stuff about exposure.. and yes I have read my manual. My question was can different sensor react to light differently. Example.. If I have the same camera as "Joey" and same lens and we are shooting the same thing will our exposure be the same? That's all I was wondering It just feels like it takes more to make my pictures light enough. I really do know about photography haha
If you do know about photography and exposure basics then you should know that F-Stops is a universal standard :p :)
Whether it is Film or Digital, Canon, Nikon or one of those cheapo ones, exposure readings are all the same. Otherwise, wouldn't one manufacturer be the absolute leader because their camera gets the exposure spot on?
miller00
4th of January 2008 (Fri), 15:57
hah okay that's all I was wondering thanks! I don't need to prove that I know stuff..cause I do =] Thanks everyone!
tombrooks
4th of January 2008 (Fri), 17:52
so have you fixed your problem then?
miller00
4th of January 2008 (Fri), 18:26
I guess there was no problem..I guess when I switched it to AV mode it switched to -2 I always just shoot on manual so I didn't realized it had changed. And sense there is no difference in sensors... My questions were answered! I love this fourm
Greg Jones
4th of January 2008 (Fri), 18:42
Just to add something. You are filling the frame with 90% (or close) of white paper. Your exposure will under expose by 1 to 1 1/2 stop. You need to over expose +1 to +1 1/2 the same as if you were shooting in snow.
TooManyHobbies
4th of January 2008 (Fri), 22:06
Not trying to be a smarta**, but did the OP ever read the manual that came with the camera? Lot's of relevant info in there. I'd also suggest getting a good book on exposure basics. Even though consumer-grade cameras have gotten more advanced, they still cannot make all of the decisions needed to capture a good image. A proper understanding of exposure and metering is still necessary...
I have many freinds who take excellent pictures, some by accident, maybe most, and they have yet to read their manuals. They ask me instead and I say "Did you not read your manual?"
foxts
4th of January 2008 (Fri), 22:15
You had a -2 exposure bias value per your exif. Hold the shutter button half way and bring the bias back to 0.
Always willing to help out a cousin.
-Jeff Miller
How can people tell what her settings are by looking at the picture? sometimes i can right click and go to properties, but sometimes i cannot.
Is there a box i need to check to see them or is it hit and miss?
agent.media
4th of January 2008 (Fri), 22:29
Some people publish their photos with EXIF data, while others do not. I use the Opera Web browser, which by default will show me the EXIF data (if published) when I right click and hit properties
doidinho
4th of January 2008 (Fri), 22:43
I guess there was no problem..I guess when I switched it to AV mode it switched to -2 I always just shoot on manual so I didn't realized it had changed. And sense there is no difference in sensors... My questions were answered! I love this fourm
The exposure compensation only works in the program modes and not in manual. You need to go to one of the modes (like Av), press the * button, and spin the wheel until the exposure marker goes back to the middle zero. Sounds like you may have already done this, but if not this is what you need to do.
TooManyHobbies
5th of January 2008 (Sat), 05:36
How can people tell what her settings are by looking at the picture? sometimes i can right click and go to properties, but sometimes i cannot.
Is there a box i need to check to see them or is it hit and miss?
Browser plugin, if someine saved their file with the info you can see it.
http://www.opanda.com/en/iexif/index.html
lungdoc
5th of January 2008 (Sat), 09:26
One important lesson of all this is that the EC settings will be maintained even if camera is turned off and do not appear in the more basic modes or in manual. They are kept consistent if you switch from Av to Tv or P however.
blackcap
5th of January 2008 (Sat), 19:56
Also could it be possible that AEB is turned on, so only every 3rd shot is being correctly exposed?
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