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11-19-2011, 05:01 PM   #16
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QuoteOriginally posted by sterretje Quote
so can you please confirm that Nikons from that era had the same functionality.
Why should I? The OP is talking about buying a D7000, not a camera from "that era." I don't give a rat's eyeball about "copying" -- who "invented" aperture priority, or shutter priority? Who the hell cares? My point is the TAv functionality could have been implemented simply by making M mode consistent with the other modes, that is, by letting the user quickly choose auto-ISO for it on demand; instead they chose to use a space on the mode dial for it. It was smart, I suppose, because perhaps it's easier to present it to users as a mode of its own, instead of having to explain "you can have traditional full manual metering, or you can make the manual a little less manual by letting the ISO adjust automatically." But I would have preferred consistency with the other modes.

(funny thing: On the K-5, in TAv mode, what happens if you press the ISO button? Nothing, of course, because the whole point is to let the ISO float. The button becomes useless. But on the K-7, weirdly, if you press that button while in TAv a mysterious number appears in the veiwfinder where the ISO normally is displayed. It took me a while to realize that that number indicated the number of shots I had remaining on my SD card. They removed that odd, inconsistent feature with the K-5, but it clarified for me what bothers me abouit TAv: they could have simply let the ISO button do in M mode what it does in Av mode: let the user over-ride auto-IS0 at any time, and go back to using it just as quickly -- or never use it at all, and keep manual metering "pure." Then there'd be no need for a seperate "mode" at all for the TAv behavior.)

Anyway, I believe using auto-ISO with the Nikons in M may involve entering a menu to switch it on and off, so Pentax's TAv mode is more convenient, but not by much.

Last edited by pentup; 11-19-2011 at 05:21 PM.
11-20-2011, 03:35 AM   #17
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QuoteOriginally posted by pentup Quote
I believe the D7000 has a similar feature, they just don't market it as a distinct mode: in Manual metering mode, you can set auto-ISO if you want, just as you can with other modes. That seems to do essentially the same thing that TAv mode does with Pentax. (And I wish Pentax had simply done it that way themselves, just letting us turn auto-ISO on and off while in M mode -- but I guess they couldn't resist being able to market a feature with a nice new name and pretending it's unique, when it's really not.)
QuoteOriginally posted by pentup Quote
Why should I?
Because it might very well have been unique in 2006 (and that is what I want to know). So why not market it as such if it was unique.

QuoteOriginally posted by pentup Quote
Anyway, I believe using auto-ISO with the Nikons in M may involve entering a menu to switch it on and off, so Pentax's TAv mode is more convenient, but not by much.
If you're right, even nowadays

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