This is my first post in this forum, although I have visited often and found much useful information here.
I thought I’d share an exposure technique described in an article I’ve written for the most recent Nikonians Ezine ( *LINK REMOVE* ). The technique may be of interest to wildlife and other types of action photographers who, like myself, understand the advantages of using manual exposure when light levels are constant, but REALLY don't like using it. I much prefer the flexibility and ease of aperture priority mode when making creative exposure adjustments. Too many times I’d be in manual exposure mode when photographing wildlife and something would happen suddenly and I'd want to get either a faster shutter speed or more depth of field quickly. I'd end up screwing it up because I'd be attempting to rapidly rotate both aperture and shutter speed dials at the same time in opposite directions to maintain proper exposure.
The article describes a way to program Nikon DSLR cameras so that, in an automatic exposure mode such as aperture priority, you can lock the exposure value with the press of a button and the exposure value will remain locked until either the button is pressed a second time or the camera is turned off. With the exposure value locked you can easily make adjustments to depth of field or shutter speed by rotating only a single dial. Below is an excerpt from the article’s conclusion.
1. Automatic Exposure Lock provides the same key benefit of manual exposure--the
ability to set an exposure that the camera cannot override --yet it retains the speed
and flexibility provided by automatic exposure modes. Aperture and shutter speed
remain linked. When the photographer selects one, the camera automatically selects
the other to maintain the same exposure.
2. The third exposure variable, ISO, is also linked in AE Lock. In aperture priority
mode, a change in ISO will change the shutter speed to maintain the locked exposure.
Similarly, in shutter priority mode, a change in ISO will result in a change in
aperture to maintain exposure.
3. The use of AE Lock keeps photography simpler. One doesn’t have to worry about
switching exposure modes or using camera dials differently. I work in aperture
priority mode at least 98% of the time. Instead of having to switch over to manual
mode to “lock” exposure, I simply press the exposure lock button. Keeping things
simple helps me avoid making mistakes in the heat of the moment of fast action.
I think this advantage is particularly important to the serious amateur (such as
myself) who photographs sporadically – usually on week-ends, more or less frequently
at certain times of the year, with occasional lay-offs of several weeks.
4. Automatic exposure modes also enable you to be always ready for sudden photographic
opportunities. At the start and end of every shoot, I try to make sure my
camera is in aperture priority mode, exposure compensation zeroed, with matrix
metering and ISO 400 selected. Whether my camera is slung over my shoulder or
on a pillow on the passenger seat of my car, these camera settings allow the opportunity
to get an image by quickly bringing the camera to my eye and shooting.
In manual exposure mode, you would have to adjust aperture and shutter speed
to null the meter before shooting.
Using automatic exposure lock as an alternative to manual exposure(2 posts) (2 voices)
This is my first post in this forum, although I have visited often and found much useful information here.Posted 2 years ago #
This is also useful if the photographic situation is confusing to the auto exposure system. I tend to let the Nikon exposure magic make a first guess and then I will adjust ev on each zone to make it perfect and keep it stable photo to photo
Another thing is that locking the exposure does the preflash which means that your follow on pictures happen faster, reduces load on the flashes themselves, and eliminate giving the subjects warning which allows them to start to blink
Oh, welcomePosted 2 years ago #
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