search by "total exposure" in Lightroom?

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desertsp Regular Member • Posts: 469
search by "total exposure" in Lightroom?

Knowing that there are infinite combinations of Shutter Speed, Aperture, and ISO that can be used to yield the same "total exposure"....is it possible to search according to "total exposure" in Lightroom?

For example, one would input the three parameters: 1/200s, F4.0, ISO 100.....and the search would return photos taken using:

1/100s, F4.0, ISO 200 (-1 stop shutter, +1 stop iso

1/50s, F4.0, ISO 400 (-2 stops shutter, +2 iso)

1/400s, F3.0, ISO 100  (-1 stop shutter, +1 aperture)

1/400s, F5.0, ISO 400 (-1 stop shutter, -1 stop aperture, +2 stop iso)

Etcetera times hundreds of potential combinations.

If this isn't possible, one possible workaround would be to put duplicates of every photo to be searched upon into a collection, reset their develop settings, then use the Match Total Exposure function. Once complete, group them according to how much Exposure adjustment was applied in the Develop module. But that's pretty kludgy.....(and I also don't know how/if you can search by the position of the exposure adjustment slider).

Any idea how to do this?

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