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Forum: Pentax K-5 02-24-2012, 09:10 AM  
AF microadjust on K-5
Posted By jmg257
Replies: 57
Views: 11,232
I did these tests to try to further understand the actual functioning of the AF Adjustment, and finally figured it out.

All lens swaps involved powering off the body. AF Adjustment values were checked in EXIF of the RAW pics.

Start with AF Adjustment Off, [ALL] = 0; [ONE]= unset

Power Up with 18-135 lens

Set 18-135 [ONE] to +2
Set [ALL] to +5
* take picture: AF used = +5

Swap in 70mm DA
Set [ONE] to +7
'OK' [ALL] at +5
* take picture AF used = +5

Swap in 18-135
* take picture: AF used = +5
Power Off/ON
* take picture: AF used = +5

Swap in 70mm
* take picture: AF used = +5
'OK' [ONE] at +6
* take picture: AF used = +6

Swap in 18-135
* take picture: AF used = +5

Power Up with 18-135
OK [ONE] at +2
* take picture: +2 used
Power Cycle
* take picture: +2 used

Swap in 70mm
* take picture: +6 used ([ONE] value I last set for 70mm above)

Swap in 18-135
* take picture: +2 used ([ONE] value I last OKd for this lens)

OK [ALL] at +5 with 18-135
* take picture: +5 used

Swap in 70mm
* take picture: +6 used ([ONE] value)

Swap in 18-135
* take picture: +5 used ([ALL] value last OK'd with this lens)


An [ALL] setting will over-ride a [ONE] setting for that lens IF [ALL] was OK'd last with that lens.
A [ONE] setting will be used for a specific lens IF that [ONE] setting was OK'd last with that lens.

SOO, as the manual hints, whatever value [ALL] or [ONE] was OK'd last with a specific lens will be the AF value used for that lens.

Sort of makes sense...as long as you are aware of it. :)
Forum: Post Your Photos! 02-04-2012, 09:10 PM  
Landscape High Country Winter
Posted By Colorado CJ
Replies: 7
Views: 578
I went on another hike/shoeshoe in the high country today. We had some pretty good snow yesturday, so the mountains were VERY white. You just can't beat the high country after a fresh snow. It was dark and cloudy/foggy all day, but I think a few of these turned out ok :D

These were shot with my new (to me) Takumar 135mm F3.5 Preset, mostly at F11.


RMNP 4 Feb 2012 2 by Colorado CJ, on Flickr


RMNP 4 Feb 2012 1 by Colorado CJ, on Flickr


RMNP 4 Feb 2012 3 by Colorado CJ, on Flickr


RMNP 4 Feb 2012 4 by Colorado CJ, on Flickr


RMNP 4 Feb 2012 5 by Colorado CJ, on Flickr
Forum: Pentax Film SLR Discussion 12-29-2011, 08:20 PM  
ME Super disassembly and problems
Posted By blacknosugar
Replies: 22
Views: 8,155
I came across a thread with what I think is a very significant little tip regarding these cameras.

Flickr: Discussing Me super problem in ME Super

About half way down there's a mention of storing these cameras wound on and ready to shoot. This makes sense as the metal arm in the picture (I think) would not be pressing against the rubber for an extended period of time and therefore would not have a chance to stick.
I've tried it with mine over the past week or two along with cycling the shutter through a few empty shots every now and then and it's now stopped skipping shots.
Forum: General Talk 09-29-2009, 11:01 AM  
Way cool bat shots
Posted By and
Replies: 7
Views: 7,440
Saw a link to these in the strobist twitter feed, quite amazing and to consider the patience and work that went into making these

Stunning shots of thirsty bats swooping to lick water from garden pond | Mail Online

includes a setup shot too. since it sayd the IR triggered the flashes and not the camera I guess thats either a typo or he used bulb mode... Wonder what he did about focus, has to be prefocus and how far he had to stop down, the shots look very sharp
Forum: Pentax DSLR Discussion 09-06-2011, 02:41 AM  
Caution: your camera maybe ruined by a laser
Posted By Nass
Replies: 10
Views: 3,277
Just came across a case of a fella whose sensor was ruined by a laser, so thought it worthwhile posting, as a warning for those unaware of this like myself. Bottom line, in case you didn't know, lasers (ie rock concerts) can ruin your camera. Links:

This can't be happening :(
What Laser Light Can Do to Your Precious DSLR Sensor
Laser safety for cameras - International Laser Display Association
Forum: Pentax DSLR Discussion 09-06-2011, 08:29 AM  
Caution: your camera maybe ruined by a laser
Posted By crewl1
Replies: 10
Views: 3,277
Guess those paparazzi's will have to go back to using film :)
Forum: Pentax K-5 08-28-2011, 09:58 AM  
Autofocus not locking in
Posted By Adam
Replies: 10
Views: 2,261
I've experienced the problem myself with wide lenses on multiple bodies, so I think it's just a slight AF misadjustment. I'm very happy for the fine adjustment feature, as my wide lenses can finally lock without problems. All the lenses were screwdrive, not sdm- so maybe it's an implementation problem? In any case, not a big deal any more.
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