Exposure is one of the important aspects on capturing good image using DSLR. Basically, exposure is about letting how much light into your camera. If too much light, your photo will be washed out. On the other hand, if too little light, your photo will be too dark. Of course, if we capture image using RAW format, we are possible to recover it during post-processing but we should try to avoid it due to below reasons:
- If you’ve overexposed you’ll end up with blown highlights you can never recover detail in these areas of a photograph.
- If you’ve underexposed, the same applies as with blown highlights. There’s no data recorded in these areas, and you can never recover any detail.
- It’s difficult to get good contrast in poorly exposed photos
- It’s difficult to get good colour saturation in poorly exposed photographs
- It takes up lots of your time correcting things later on! Better to get it right when you take the photo
- Light meters in cameras can be fooled by certain lighting conditions.
There are 3 elements to build good exposure, which is Shutter speed, Aperture, and ISO. Click here for photography cheat sheet by Miguel Yatco.
Below is The Three Basics of Exposure and Photography from Matthew Gore which explain the relationship between the 3 elements:
In order to get accurate exposure, u need to get rid of the AUTO mode, go to creative mode such as Shutter (Tv), Aperture (Av), or Manual mode in order to fully control the exposure. That is the fun of DSLR where u able to control every things.