Posts Tagged ‘understand’

A Simple Explanation of the Metering and AE-Lock Features in Your DSLR

Want a better understanding of how the metering and AE-lock features in your DSLR camera work? YouTube photography tutorial channel PhotoUniverse made this simple explanation that explains the concepts using a whiteboard. He quickly steps through evaluative (which uses a database of many “known” photos) and center-weighted metering before spending a good amount of time explaining spot metering and how you can use it in conjunction with AE-Lock to properly expose photographs.

If you’re already adept at handling your DSLR, you probably won’t learn anything new, but this video is great for anyone that’s just starting to dip their toes into more serious photography.

(via PhotoUniverse via Reddit)

P.S. He also shares a common trick used by many photographers for metering on a sunny day: green grass can often work nicely as an 18% gray card.

Online Sensor Size Calculators and Comparison Charts

A camera’s sensor size is a very good predictor of how good its image quality is, but understanding and comparing the sensors sizes isn’t very easy. While televisions and computer monitors are usually measured by diagonal length, sensors sizes are listed with its two dimensions in millimeters. Back in 2008, David Pogue of the New York Times wrote an article about this issue, calling for someone to develop an online tool for converting confusing sensor measurements into the diagonal length of the sensor in inches. Within three hours two new websites were born: Sensor-Size and Sensor Size Calculator.

Sensor-Size | Sensor Size Calculator (via Lifehacker)