Stepping to the left - stepping to the right

<p>I was wondering if someone might be able to clarify what this phrase means 'Stepping to the left - stepping to the right' I presume it has something to do with exposure</p>

<p>The "step" part is a shutter speed adjustment, usually in an increment of three. For example, 1/30, 1/40, 1/50, 1/60 would each be a step. In that sequence of four numbers, there are three spaces between them. A "stop" adjustment would be in increments of two (1/30 to 1/60, skipping everything in between but creating a doubling or halving value of the preceding number).</p>

<p>The left side of some of these exposure graphs usually represents a black tone; bright white is to the right. So, "to the left" means under-exposing; "to the right" means over-exposing; or, adding less or more exposure with respect to the direction on the graph.</p>

<p>Say your exposure was 1/40; a step to the left would be 1/50 (adding one step less light); a step to the right would be 1/30 (adding one step more light).</p>

<p>For convenience, some DSLRs will allow you to change in what increments the shutter speeds increase or decrease. Many people will just use the camera set for stops (1/30, 1/60, 1/125) but they can, in some models, be set for steps (1/30, 1/40, 1/50).</p>

<p>This "one step" adjustment being referred to will usually make a very small change to the image. It'd be about as small of a change in exposure as you might notice with the eye if you compared the two photos side by side. </p>

<p><a href="http://en.wikipedia.org/wiki/Exposure_value">http://en.wikipedia.org/wiki/Exposure_value</a>... you need to read this webpage to understand whats under n over exposure. Also though mostly shutter speed is used traditionally, you can adjust with aperture as you can control in the 1/3rd stops in particular with new dslrs. check the EV scale in the camera.</p>