September 7, 2012 at 12:37 pm #14021
I have read the exposure triangle, changing the aperture for exposure, will actually change depth of field, changing the shutter for exposure will change the degree of blur, and changing the ISO will change grain effect on the image. I heard about exposure compensation and bracketing. Can you tell me in simple words about these techniques or any other similar technique?September 7, 2012 at 3:16 pm #14022
Hey Adam, It is not possible to change the exposure with anything but the three. You can ‘aid’ them with additional light sources – even then, the exposure is controlled ONLY by the shutter, aperture and ISO.
Both the exposure compensation (EC) and the bracketing are technics where you ‘instruct’ the camera to read a particular frame in a particular way. Let me take an example: If you want the image to be more bright, you set a positive EC, and a negative one for slightly darker image. Now, this just tells the camera that you want a brighter/darker (than normal, indicated by zero compensation) image. HOW this is achieved, is ONLY by altering the parameters of the exposure triangle. As the name goes, the value is just a compensation for light that the camera reads.
Hope it helps!
PS.: The exposure compensation doesn’t work in the FULL MANUAL mode : works only in shutter/aperture priority and other semi-auto modes.. If I was clear in my explanation, you should be able to get the reason ;) Try.September 11, 2012 at 8:58 am #14184
Thanks for your answer, so this means, I will have to do a lot of practice and find the pinpoint relationship between the three, in order to get desired shots.
I also learnt a new thing, that EC doesn’t work in full manual mode.
Thanks again!September 12, 2012 at 1:12 pm #14450
I would like to tell you about AE-L, that is, auto-exposure lock. This feature enables you to lock the exposure reading in the specific and does not change when you re-compose the shot. The exposure reading remains the same despite the change in the level of light.
I learned about this technique while researching on various exposure modes of the camera. But have not got chance to put it to test yet. But I think this can help you in getting the exposure you want.
Please do try it out. I would love to know if it helps.September 13, 2012 at 10:10 am #14467
Thanks Arne Cook,
Your answer can be an option for me, I am still wondering how does AE-L compansate for the exposure, after we change the scene post AE-L?
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