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DPChallenge Forums >> Tips, Tricks, and Q&A >> rebel aperature issues
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 01/02/2004 03:06:22 PM · #1
i'm using the rebel kit lense and having trouble achieving enough light in my pictures. on the lcd, they look great, but when i upload them to my pc, they look very dark as you can see here. i shot these at 1/60, f5.0, with outside light coming in.
is my only solution leaving open my shutter?

this has been edited in PS
thx,
ditch

Message edited by author 2004-01-02 15:07:04.
 01/02/2004 03:19:40 PM · #2
Does the camera indicate that 1/60 at f5.0 is the correct exposure? If so you'll probably have to use exposure compensation to adjust.

I think the LCD brightness can be adjusted so I wouldn't trust it to judge proper exposure. Also, if there are a lot of white areas in the picture the camera will be trying to adjust to 18% grey.

Hope this helps.
 01/02/2004 03:26:45 PM · #3
You are using " M " manual mode,and maybe your shutter speed is too fast,do you have exposure indicator light/option?
 01/02/2004 03:27:49 PM · #4
Originally posted by cpanaioti:
Does the camera indicate that 1/60 at f5.0 is the correct exposure? If so you'll probably have to use exposure compensation to adjust.

I think the LCD brightness can be adjusted so I wouldn't trust it to judge proper exposure. Also, if there are a lot of white areas in the picture the camera will be trying to adjust to 18% grey.

Hope this helps.


ahhhh, bracketing! cheers, i'll try that but my problem now becomes the lcd monitor. i have adjusted its brightness level to 3 bars (which is always stays at for me) and it looks great until i upload. is anyone else having this same problem? it's deceiving when you first look and assume you are satisfied with the exposure.
 01/02/2004 03:29:34 PM · #5
Originally posted by pitsaman:
You are using " M " manual mode,and maybe your shutter speed is too fast,do you have exposure indicator light/option?


when i take the shot, the light indicates that i am receiving enough light, yes.

01/02/2004 03:30:06 PM · #6
The LCD on my 10d shows the image brighter than it actually is also. Do not rely on your lcd for proofing other than composition. Trust your meter. It won't often lie to you.

In your photo example, It seems to me that you don't have enough light to work with. You didn't indicate if you were looking for 'normal', 'low key', or 'high key' exposure either...
 01/02/2004 03:31:19 PM · #7
I think i know what happened though....

You metered on the white colored wall and it underexposed your shot because of that. Add one stop of exposure.. if that isn't enuff, add two. Your meter did lie to you actually :)
 01/02/2004 03:35:52 PM · #8
Originally posted by jackditch:
Originally posted by cpanaioti:
Does the camera indicate that 1/60 at f5.0 is the correct exposure? If so you'll probably have to use exposure compensation to adjust.

I think the LCD brightness can be adjusted so I wouldn't trust it to judge proper exposure. Also, if there are a lot of white areas in the picture the camera will be trying to adjust to 18% grey.

Hope this helps.

ahhhh, bracketing! cheers, i'll try that but my problem now becomes the lcd monitor. i have adjusted its brightness level to 3 bars (which is always stays at for me) and it looks great until i upload. is anyone else having this same problem? it's deceiving when you first look and assume you are satisfied with the exposure.

Don't try to use the camera LCD to determine if the image is exposed correctly, the only camera tool of any use for this is the histogram.

Message edited by author 2004-01-02 15:36:57.
 01/02/2004 03:36:19 PM · #9
Originally posted by jmsetzler:
I think i know what happened though....

You metered on the white colored wall and it underexposed your shot because of that. Add one stop of exposure.. if that isn't enuff, add two. Your meter did lie to you actually :)


cheers. i think you are right.
 01/02/2004 03:47:19 PM · #10
I have noticed this issue with the LCD being overly bright showing a well exposed photo too but is dark when uploaded to PC.

To correct this issue I look at my LCD at a slight angle tilting the camera forward a bit (looking more from the bottom). I pulled up an image on the camera and then pulled up the same image on my computer screen to compare just how much of an angle I should view the pictures on the LCD at. Try this and let me know if it works for you too.
 01/02/2004 03:55:01 PM · #11
Good idea to check the histogram to see if the shot was properly exposed. If most of the histogram is to the left it means it is too dark.
 01/02/2004 04:01:21 PM · #12
My 717 is slightly bright. I can compensate to a degree in the Setup Menu but not much. I believe it has to do with being able to see the little LCD in daylight. And if you have a histogram it is very easy like Jacques said.
 01/02/2004 04:19:35 PM · #13
Originally posted by wackybill:
I have noticed this issue with the LCD being overly bright showing a well exposed photo too but is dark when uploaded to PC.

To correct this issue I look at my LCD at a slight angle tilting the camera forward a bit (looking more from the bottom). I pulled up an image on the camera and then pulled up the same image on my computer screen to compare just how much of an angle I should view the pictures on the LCD at. Try this and let me know if it works for you too.


Yeh i do this now - I also experienced the LCD 'problem' and also just getting to grips with the histogram, which has helped a lot.


01/02/2004 04:27:25 PM · #14
As posted, the histogram is the tool you should rely on. On the 10D, you can turn on the histogram during the review period, and set the review period (the time the pic just taken is displayed, default is 2 seconds). I suspect the 300D has the same menu choices. the one you are looking for is "Review", the choices are "off", "on", and "on(info)". You want the last choice.
Your choices for review period are 2s, 4s, 8s, or "hold". I chose 4s to give me a little time to scan the histogram.
I agree with the previous posts that the LCD is artificially bright, I don't trust it for exposure.
 01/02/2004 04:57:34 PM · #15
Originally posted by jmsetzler:
You metered on the white colored wall and it underexposed your shot because of that.


This is where I run into problems also & never gotten a real good explanation how to solve this problem...

How do you select what is being metered for the correct exposure??


01/02/2004 05:13:42 PM · #16
Point the center of the view finder at the subject you want to meter and then push the * (AE Lock) button at your right thumb on the back of the camera. This will do a Partial metering of the center and will more than likely help you. I use this just about any time I want to make sure a certain part of an image is properly exposed with very good results. Oh yea, this can only be used in the creative zone of the camera (P, TV, AV, M, A-DEP).

Originally posted by rickhd13:
Originally posted by jmsetzler:
You metered on the white colored wall and it underexposed your shot because of that.


This is where I run into problems also & never gotten a real good explanation how to solve this problem...

How do you select what is being metered for the correct exposure??


Message edited by author 2004-01-02 17:14:26.
 01/02/2004 05:29:58 PM · #17
Wackybill

Thank you for that quick & easy explanation...


01/02/2004 07:14:50 PM · #18
No problem. I hope it helped. :-)

Originally posted by rickhd13:
Wackybill

Thank you for that quick & easy explanation...

 01/02/2004 07:25:16 PM · #19
Digital Rebel Manual

Page 78 of your manual explains what Bill pointed out. I have gone back and re-read my manual several times. I find something new every time.
 01/02/2004 07:41:17 PM · #20
there is a histogram option on the camera, you can look at the histogram
and see actually how the darks and lights are laid out. and use that to judge exposure.

you can also use custom white balance to trick the cameras meter.

and as mentioned above the exposure lock is a way to get the camera to use a spot meter.

bracket the shots if you're unsure about exposure.

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