As I've said before I wasn't paying much attention to the beginning of
this thread, and didn't realize that Cory suggested this earlier. I
apologize.
P. J. Alling wrote:
>I think you're being too complicated. How about this. Call it auto
>stop down compensation
>
>1.) Mount a K lens. Or take an A/F/FA off A position. The Camera
>automatically senses this.
>2.) Set the mode dial to Av, if it's not there already.
>3.) Press the green button.
> a) The camera takes a meter reading and temporally records it.
> b) The lens stops down to taking aperture and makes a reading
>subtracting the EV value from the temporally stored value.
> The camera now knows the difference between wide open and
>the current F stop set on the lens.
>
>Now every time you take an exposure the camera calculates the proper
>exposure based on that offset. (It and also display an estimate of over
>or under exposure in the viewfinder).
>
>No extra dials or buttons to press. If you change the aperture you get
>instant exposure compensation.
>
>If you change aperture and don't want exposure compensation press the
>green button again.
>
>Make this type of operation a menu item in the custom menu with a
>default to the Av behavior.
>
>Basically an aperture simulator for Av all done in software.
>
>The only problem is that you might run out metering range, but that's
>true of using the green button Kludge now anyway.
>
>Cory Papenfuss wrote:
>
>
>
>>>> Of course it's academic since it's not an option with the current
>>>>firmware, but I don't think it would be too bad. The +-EV only works
>>>>within 3 EV from wide open, and even then you have to do the math of how
>>>>many stops you are from wide-open.
>>>>
>>>>
>>>>
>>>>
>>>Or 6 if you calibrate on 3 stops up from open-aperture. I have done
>>>it, Cory, it's a pain, even without having to go into a menu to
>>>indicate the aperture.
>>>
>>>Kostas
>>>
>>>
>>>
>>>
>>>
>> I still think that's more confusing than what I'm thinking. The
>>most annoying thing is having to set (somewhere) the maximum aperture of
>>the lens... I'm thinking a "button+wheel" maneuver in P or Av mode when
>>you mount up a K/M lens. Firmware could "blink" the aperture (e.g. '1.4')
>>to let you know you set it. After the lens is mounted and max dialed in ,
>>you just have to dial the wheel to match what you've set the lens to. It
>>saves having to mentally do the math, allows open-aperture metering all
>>the way to the min aperture of the lens, and doesn't require the "GB
>>trick" evertime the lighting changes... only that when you move the
>>aperture ring on the lens you match it with the dial.
>>
>> How exactly do you get 6 EV?
>>
>>-Cory
>>
>>--
>>
>>*************************************************************************
>>* Cory Papenfuss, Ph.D., PPSEL-IA *
>>* Electrical Engineering *
>>* Virginia Polytechnic Institute and State University *
>>*************************************************************************
>>
>>
>>
>>
>>
>>
>
>
>
>
--
Things should be made as simple as possible -- but no simpler.
--Albert Einstein
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