To ETTR or not to ETTR...?

Started 3 months ago | Discussions thread
XRF Forum Member • Posts: 78
Re: ETTR rules
5

Adielle wrote:

Any mirrorless camera (I don't know about all DSLRs) already aims to do exactly that, by default, when the exposure knob is centered: maximize the exposure without clipping highlights. That's obviously not always the desired setting, because sometimes some highlights lower the average exposure too much, and sometimes you actually want to lower the average exposure and retain highlights better, and sometimes it's actually not enough exposure for whatever reason, so the exposure compensation option is provided (as well as various auto exposure settings). I don't see "ETTR" as having anything to do with "maximizing exposure without clipping" but as having a personal bias towards maximizing the average amount of highlights (getting a histogram with lots of highlight content) in any situation (manually).

No, this is not how autoexposure works. Read tomhongkong’s post for a good description. Autoexposure simply seeks to have an average light intensity level in the frame based on the idea that everything in the frame should reflect an average of 15-18% of incident light, with half a stop added for specular reflections. If everything in the frame is evenly lit, you can have a lot of room to increase exposure without hitting saturation. This is what ETTR is about.

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