No exposure change in photos?

[Narginia]

Hello Everyone! I have been recently playing with HDR photography. I am finding that although I shoot in manual mode, and I manually change my exposure, the pictures just aren't reflecting that and the software Im using also tells me there isn't a difference in my exposure... however the exif data shows the exposure change... Any ideas on why I could change the setting on the camera but its not photographing any change?

[teaking]

How are you changing exposure for your HDR work?

If your shooting in manual like you say you should be keeping the same Aperture, ISO and using manual focus. You should be changing the exposure in manual mode by changing the shutter speed two increases either way will change the exposure +1 or -1 depending on which way your change it.

Hope that helps a bit

[Wylde007]

Are you using Bracketing? if not this would probably be the most successful method maybe check your manual, another way in photoshop, open image, exposure and enter +2 save file as plus, do the same again but enter -2 save as minus, then you will have the 3 images.

[i speak in math]

Are you shooting raw or jpeg? some raw development software, picasa for instance, will adjust raw images to equalize the exposure to what it thinks is a "correct" exposure. If you are down 1 ev, it will raise it and if you are up 1 ev, it will lower it. So your images will look the same with different settings. Use a more professional program that lets you adjust the images like photoshop or lightroom

[beatryder]

Originally Posted by i speak in math

Are you shooting raw or jpeg? some raw development software, picasa for instance, will adjust raw images to equalize the exposure to what it thinks is a "correct" exposure. If you are down 1 ev, it will raise it and if you are up 1 ev, it will lower it. So your images will look the same with different settings. Use a more professional program that lets you adjust the images like photoshop or lightroom

I have found that lightroom will want to do this as well. Just make sure you hit the "Reset" button,

[Narginia]

Thank you guys for all the suggestions! I am going to try some of them out in the next few days as I have opportuities.

[wulf]

If the lighting is constant and you change one parameter of the ISO / aperture / shutter speed triangle by a step you should see a perceptible change as the image becomes over or underexposed compared to the first shot.

Possible problems include shifting light (eg. outside on a windy day when things get blown between you and the sun), the camera using an automatic ISO setting and undoing the change you make to another parameter (I set my camera to leave ISO entirely under my control) or using less than a stop (for example, my Vivitar lens lets me click to f/5 between f/4 and f/5.6 - that gives finer control but is less than one stop - see this table for standard stops).

Wulf