An unexpected benefit of using the back button AF instead of AF tied
to the shutter is that my battery life seems to almost double on the
K5, I can shoot a 32GB card RAW +JPG before I have to swap out
batteries.

On 8 November 2013 22:33, Paul Stenquist <[email protected]> wrote:
> Why not go back to shutter release autofocus? it works for most shooters and 
> helps ensure focus won't change before shutter release.
>
> Paul via phone
>
>> On Nov 7, 2013, at 11:12 PM, Stan Halpin <[email protected]> wrote:
>>
>> Besides the continuous shot sound files I posted earlier, I played around 
>> with a few other K-3 features.
>> I did another two ISO series, one with, one without high ISO NR turned on. 
>> All full stops from ISO100 to 51200. (K-3 only, no more comparisons to the 
>> K-5ii). I'll post those if anyone wants to see the results. In brief, there 
>> is noise at higher ISO, in-camera NR may make a difference but 
>> post-processing is still needed. But even I can get a decent ISO51200 image 
>> with a bit of LR4.2 effort.
>>
>> I tried out the in-camera HDR. Like with the K-5, it offers the option of 
>> HDR Auto, HDR1, HDR2, and HDR3. I am clueless as to what those designations 
>> are supposed to mean, and neither manual has any hints. Unlike the K-5, the 
>> K-3 in-camera HDR works on RAW files.
>>
>>    1. In-camera HDR takes about 5-7 seconds of data processing time after 
>> the three images have been shot.
>>    2. The resulting file is in the 90-95mb size range. I don't now why. That 
>> is like they just added the three original files together; where is the 
>> processing?
>>    3. A simple 3-shot bracket, exported to Photomatix, can be worked into a 
>> good HDR, lots of variation possible, and it takes little time while 
>> shooting.
>>    4. The in-camera HDR may be slow and lacking in processing options, but 
>> it doesn't require heroic post-processing.
>>
>> One of my experiments was to focus-stack a series of HDR shots of a 
>> still-life similar to what I posted yesterday. I am loving the tonality and 
>> detail I am getting!
>>
>> This playing-around is not yet producing any images that are likely to pay 
>> for the camera. But they are helping me get comfortable with the use of the 
>> camera.
>>
>> So far I am quite disappointed by one thing. I had thought that I would stop 
>> with one K-3 and keep one of my perfectly good almost new K-5ii's as my 
>> second body & backup. But a couple of months ago I switched to a 
>> "back-button focus" mode of shooting, have come to quite prefer that 
>> approach and am comfortable using it. The K-3 moves the relevant AF button. 
>> Moves it to a better place IMHO, but still, it is moved. In its old location 
>> is the Green Button. Eventually I will learn to quickly almost-automatically 
>> find the new AF button and not have my shooting concentration spoiled by 
>> inadvertent pushes of the Green Button and the consequent screwing up of my 
>> carefully chosen balance between ISO, Aperture, and Speed. And I can 
>> re-program the Green Button to not do anything (which is a bit of a waste). 
>> But I seriously doubt that I can quickly switch back and forth between the 
>> two bodies. So I need to either give up my two-body style of shooting or I 
>> need a second K-3. But I really really
  need an updated computer to precess the K-3 files. . .
>>
>> stan
>>
>>
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-- 
Rob Studdert (Digital  Image Studio)
Tel: +61-418-166-870 UTC +10 Hours
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