ImageCreator wrote:
For the most part, I leave my camera set at Evaluative Metering. But, I wonder, is there a better way?
Does anyone regularly use either center weight or spot metering. For the most part Evaluative gives me consistent results. What say you?
Then there's the other can of worms of going totally manual. . but we'll save that for another time.
I think I might go out and do Center weight or spot for a whole Shoot and see what happens.
Any thoughts.
Evaluative (or Matrix, as some call it) is what I use most of the time.
Center Weighted is an "old school" method. It was the primary metering pattern in cameras I used in the 1970s. It measures the whole scene, but puts a bit of extra emphasis on the center of the image. That would be fine if you put your subject right in the center of every image. But I don't do that.
In fact, Evaluative is similar, but smarter. It also measures the whole scene, but puts extra emphasis on the area right around active AF point(s). In other words, it assumes that the AF point is where your primary subject is located in the image area.
Spot Metering can be useful at times, but needs to be used carefully. Because only it's only a small portion of the image area, you have to take into account if there is any variation from "average gray" tonality in the area being
measured. Because Evaluative or Center Weighted are measuring a broader area, it's more likely to be a mix of tonalities that average out and won't need any Exposure Compensation (E.C.). I find Spot requires more careful E.C.
Partial Metering is merely a larger version of Spot.
Both Spot and Partial in most cameras are only in the center of the image area, usually defined by one or more circles etched into the focus screen. This can mean having to do your metering, then recomposing the image if you don't want the subject perfectly centered. One alternative I've used in the past were cameras with Active AF Point Linked Spot Metering... but that's now only found on the most advanced (and expensive) pro models. However, Evaluative Metering performs similarly... and might be a little more forgiving or less likely to need E.C. than AF Linked Spot.
I also usually carry a separate light meter: a Sekonic L358. This is an incidence/flash meter.
The light meter in your camera is reflective. It measures the light bouncing off of the subject and scene. As a result, the meter's readings are influenced by the tonalities in front of it. Often this isn't a problem with the broader methods of metering (Evaluative and Center Weighted) because all the stuff in the scene averages out to "18% gray" tonality. But if the scene is unusually dark it will cause the camera to want to over-expose.... or if it's unusually light, it will cause the camera to under-expose. This is where Exposure Compensation comes in with any of the auto exposure modes. E.C. lets you override the metering and exposure system to compensate for unusually dark or light scenes (if shooting purely manual exposure, you can skew your settings similarly).
An incidence meter instead reads the levels of light falling onto the subject(s). When done correctly, this requires no exposure compensation. (Though you still might tweak settings as a personal preference or for a particular effect.) The flash meter is handy when using multiple lighting units and needing to balance them carefully. My L358 accepts radio modules to remotely trigger some lighting gear. This model is no longer available... the Sekonic L308 is similar, but doesn't have the radio module option.
This reminds me... I need to pick up a new battery for my L358!