The green button is a mystery because it does so many different things.
In manual mode it recenters everything press the green button while
holding down the exposure compensation button it resets that control to
zero, it does that with a number of setting, press it down while holding
down the ISO button and it, hell it sets the camera to auto ISO in the
K-5 cameras, I don't remember what it does on the K20D but then ISO is
hidden in the OK button, and I never tried it, on *ist series cameras
well the *ist-D it does nothing. In
hyper program it resets the camera to program mode using the set program
line, which it's done from the beginning, in hyper manual it sets the
program mode exposure for what you're pointing at. Using a K M lens it
sets the "proper" shutter speed, but I wouldn't trust that setting if
you've picked a f stop over f8, probably not over f5.6.
The KxxD cameras added a bunch of functions over the earlier ist-d and
theh K-5 cameras added even more functions, which may or may not be
documented anywhere, and which further can lead to confusion, but the
core features are resetting to the program line in M and P modes.
On 9/19/2014 4:38 PM, Bruce Walker wrote:
Pentax has definitely failed to promote the Green button. To me it's
just a Mystery Button that I could just as easily cover over with
black electrical tape.
After it got talked about here a few years ago, I made the effort to
read up on it. The manual left me scratching my head, but folks here
insisted it was awesome. I think the issue with the manual is there's
no overview or Big Picture -- why it was added.
When I tried it out, no matter what I did with it it just seemed to
produce random and inscrutable results -- incorrect exposures -- with
no apparent benefit to me.
I think of it as the Do Not Press Me Ever button. It just presents one
more opportunity for me to fsck up the settings if I fumble-finger it.
On Fri, Sep 19, 2014 at 10:08 AM, Darren Addy <pixelsmi...@gmail.com> wrote:
On Fri, Sep 19, 2014 at 2:54 AM, Alan C <c...@lantic.net> wrote:
If people really want to use pre-"A"
lenses, they can easily work in M mode and use Sunny 16 like we all did long
ago (& waste no film).
Pentax has actually given us a lot more than that. Most everyone knows
that the Green Button can be set to give you the Program exposure
setting while in Manual. But a lot of people still don't know about
Hyper Manual. Hit the AE/L button after the green button and now you
can change BOTH the aperture and shutter speed (together with only ONE
dial) at your chosen ISO. Super handy.
- - -
Photographers must learn not to be ashamed to have their photographs
look like photographs.
~ Alfred Stieglitz
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