A new 1D Mk III stupid or sensible?

picturecrazy wrote in post #6266339
HTP is nice, but it only helps if you purposely blow out your whites and expect them to be saved. It doesn't seem to do much if you properly expose or only slightly overexpose your whites. I found I had to push it even further than I was initially comfortable doing to get a real benefit out of HTP.

But is there any negative effect to using HTP?

Personally I have it on all the time - just in case

Buffer space

ryanyboy wrote in post #6266535
But is there any negative effect to using HTP?

Personally I have it on all the time - just in case

yes there is. You're losing out in the mid and low end because it basically underexposes everything except the extreme highlights and pushes the exposure up one stop. The result is increased noise and loss of details in extreme shadows, as well as loss of latitude at those mid/lower ends. At low ISO, you probably wouldn't notice any noise anyhow but using it at 16oo you may see it. You don't really want to be underexposing shots with HTP.

I much prefer Nikon's implementation of ActiveD lighting.

With HTP, don't you also lose ISO 100?

And Nikon's true auto ISO.