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Jan 6, 2017 00:49:24   #
forjava Loc: Half Moon Bay, CA
 
Fine. About your 1 and 2, I'll add that David Busch (D810 book) suggests adding fill lighting to manage shadow pull-up noise when you reduce exposure to fix this - p. 135.

See my earlier post and for more on Busch remarks see my later (than this) post, all in this thread, FYI.

selmslie wrote:
Schewe's article is nearly seven years old. It does not identify the ISO used in the initial example. It is as disingenuous as other pro-ETTR articles we have been subjected to here. It's about as honest as a laundry detergent commercial.

It begins with an ISO setting high enough to cause a problem and then shows that increased exposure can reduce the appearance of noise. Duh! The scene is static. If he had used base ISO in the first place there probably would have not been any visible noise in the normal exposure.

The second article is even more out of date, regardless of when it was posted, since it is talking about cameras with a 12-bit raw file. It's basically a rehash of Reichmann's initial article.

It will probably take years to clear the air on ETTR.

Just follow this simple advice:

1. Use the lowest practical ISO.
2. Expose normally but don't blow the highlights.
3. When in doubt, bracket and delete the images that did not work (or combine them into an HDR).

Do your own tests. Believe what you see, not what you are told.
Schewe's article is nearly seven years old. It do... (show quote)

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Jan 6, 2017 01:18:30   #
forjava Loc: Half Moon Bay, CA
 
Thanks. Watched the video last night.

The ONLY solution for blown-out red
Today I stumbled on a page-long full discussion by David Busch in the D810 book (may be in his other books, too). He says the "only" way to fix this is to reduce exposure.

So you and Busch and I (post above from me) have cited the same cure.

Let me add that it may be easy to forget that the exposure can be reduced with lighting changes, including reorientation of the subject and light source(s) -- as discussed in my earlier post.



jamesl wrote:
I found a link to a video by Mike Wallace showing the red problem you were talking about and how to correct for it.

For more, about histograms, see my post below.

https://www.youtube.com/watch?v=Soe5zIm5bCA

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Jan 6, 2017 01:22:00   #
forjava Loc: Half Moon Bay, CA
 
Is the red really overexposed like the histogram says?
Probably, for example if a rose petal is visibly missing detail. Still, the histogram is taken from a JPEG, of a raw file, so indications of overexposure in any histogram can be a false positive, due to untoward squeeze applied.

Get more histogram truth (Tip)
A more reliable histogram is easily available by shooting a raw test shot with the Picture Control style, Flat, introduced on the D810. See Busch.

Must you care if overexposed?
Busch says it may not matter in some cases and is up to the shooter, FYI. He is not the first to say so.

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