A serious problem for increased AF speed!

ooooops

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If the SR unit remains the same as before, it takes around half a second to be ready.

Shall we expect to use it? And also in the burst mode (7fps)?
 
Long known problem, I noticed it on the K10D, K20D, K-7 and K-x on the earlier models it was with my fastest focusing lenses, on my later models it was with most of my lenses, the K10D and K20D take 0.6 sec to spool up and the K-7 and K-x take 0.58 sec to spool up...

I sure hope they improved the spool-up time but the SR system seems about the same as before

you can either turn it off or delay 0.6 sec before hitting the shutter full down. as for 7fps well that's likely only in MF and maybe in AF-S, in AF-C we can expect it to be about twice as fast as the K-7 but really only 3-4fps
If the SR unit remains the same as before, it takes around half a second to be ready.

Shall we expect to use it? And also in the burst mode (7fps)?
--
Mike from Canada

'I like to think so far outside the box that it would require a telephoto lens just to see the box!' ~ 'My Quote :)'



http://www.airliners.net/search/photo.search?sort_order=views%20DESC&first_this_page=0&page_limit=180&&emailsearch=mighty_mike88%40hotmail.com&thumbnails=
 
you can either turn it off or delay 0.6 sec before hitting the shutter full down.
Take AF off the shutter button and use the AF button for AF. This will allow you to start SR and to keep it active with the shutter button half press. If you wanted to do something really crazy you could also make up a 2.5mm plug that shorts the half press so that metering and SR are always active in this setup when the plug is in the remote port.

You can also prestart SR with AF on the shutter button and Cancel AF on the AF button. In this set up, you have to keep your thumb on the AF button to keep the AF canceled and have your finger on the shutter to half press it to get SR active. This requires some retraining as you now never let go of the half press shutter. If focus is locked from a past shot, you hit the AF button to start up AF again by canceling the lock, keeping the half press on the shutter. If the AF hunts and goes dormant, again you hit the AF button to get AF to start by canceling the blinking AF indicator, keeping the half press of the shutter.

It would really be nice if there was an option in the firmware just to set SR active and inactive or until the camera is turned off.

Thank you
Russell

--
http://waorak.tripod.com/
 
Or you could just try to be more disciplined with the trigger finger and not fire off a shot until you're pretty sure SR is ready... for me that's the easiest way, a slight pause before firing.
You posted this above already, so sure, whatever works. Just sometimes you can't wait and you need to have a way for SR to be active before focus so that as soon as focus is achieved, the shutter trips.

I should have pointed out that simply shifting to AF-C is also a work around. It is just whether or not the shooting environment will allow AF-C to be used.

Thank you
Russell

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http://waorak.tripod.com/
 
I have used Russels setting many years. It is best setting, because sr is activated when you wait right time to shoot. You can use af-c almost all time. It´s good when you take picture in poor light. When you get right af, take finger off af button. You can take many pictures and you have same focus all time. Same situation is when the bird sits in a three and has branches in front of. Now you can choose the right piece af focus and take pictures at the same af.

I don´t know is acting sr without breaking burst mode. I have not had problems.
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http://jonne.smugmug.com/
 
If the SR unit remains the same as before, it takes around half a second to be ready.

Shall we expect to use it? And also in the burst mode (7fps)?
Decouple AF from half-press and use the dedicated AF button.

SR is shown to work better around .5 seconds after the light comes on anyway, so just keep it half-pressed for a while before shooting, which is fine since the AF won't be activated.
 
If you are shooting action, SR (or IS) should be off anyway. Not a problem.
 
It tokk me a while to realise that that itis best to turn off SR for action shots for anything moving faster than a cantering horse. Thats why I find TAV mode so useful, control of DOF and shutter speed to stop motion blur (as oppossed to camera shake) THe K20d has an external switch the K7 and presumably K5) do- not - I always thought this a bit strange.
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Everything changes
 
.. that any action you take, any sensory perception, you cannot consciously register and create feedback before 0.5 seconds passes anyway?

It is highly unlikely your camera will fail in activating SR when you're using it, as opposed to lab tests where machines test the SR response of the camera and may take intermediate action -- which you cannot under no circumstances.
So, relax and enjoy your photography.
ooooops wrote:

If the SR unit remains the same as before, it takes around half a second to be ready.
Shall we expect to use it? And also in the burst mode (7fps)?
 
It fails on a regular basis if i hit the shutter full down as soon as i know its in focus, call it a fast trigger finger, i don't use the beeps but its pretty easy to tell when the lens has stopped moving and therefore is in focus and all this can happen in 0.2 sec or even less if the lens was already nearly in focus.

sometimes you don't see an issue and somethings it completely explains why a shot has motion like blur even at fast shutter speeds.

I do my best to pause just a hint before firing but sometimes i'm too excited and then some of those times the SR being not ready ruins the shot.

My fastest focusing lenses give me the biggest problem

in no particular order
  • F 35-70mm F3.5-4.5
  • F 70-210mm F4-5.6 (newly bought)
  • F 100mm F2.8 Macro
  • F AF 1.7x TC on the Tamron 300mm F2.8 60B (or any other lens)
  • Sigma 100-300 F4 EX DG
--
Mike from Canada

'I like to think so far outside the box that it would require a telephoto lens just to see the box!' ~ 'My Quote :)'



http://www.airliners.net/search/photo.search?sort_order=views%20DESC&first_this_page=0&page_limit=180&&emailsearch=mighty_mike88%40hotmail.com&thumbnails=
 
With the K20D there have been many a time when the subject (usually a bird) is in focus but the SR is whirring up. I want to take the shot (but low light = slow shutter) before it b'ggrs off and so I beat the SR. It would be nice to move the infocus bleep to become an SR running confirmation (firmware option).

Especially if AF is now so fast that one can take it for given that the subject is focused ;)

ps. I also have always run with AF separated from shutter half push and do find it a bit of a pain that a press on the AF will not reawaken the metering / SR should it time out.
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Wow, thats a pretty specific question for someone's 2nd post. Most completely new people are asking things like "Can I use my canon kit lens on a kx?". Way to jump right into the thick of things. Also, you appear to have registered on 12/9/2010, so could you please post some K5 and KR high iso shots from the future?

Thanks
If the SR unit remains the same as before, it takes around half a second to be ready.

Shall we expect to use it? And also in the burst mode (7fps)?
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My PPG

http://www.pentaxphotogallery.com/home#section=ARTIST&subSection=7472316&subSubSection=0&language=EN
 
Wow, thats a pretty specific question for someone's 2nd post. Most completely new people are asking things like "Can I use my canon kit lens on a kx?". Way to jump right into the thick of things. Also, you appear to have registered on 12/9/2010, so could you please post some K5 and KR high iso shots from the future?
English site English date order dd/mm/yyyy

12 September 2010 has been and gone :)
Thanks
If the SR unit remains the same as before, it takes around half a second to be ready.

Shall we expect to use it? And also in the burst mode (7fps)?
--
My PPG

http://www.pentaxphotogallery.com/home#section=ARTIST&subSection=7472316&subSubSection=0&language=EN
--
My PPG

http://www.pentaxphotogallery.com/home#section=ARTIST&subSection=1471087&subSubSection=0&language=EN
My Photo Stream
http://www.flickr.com/photos/awaldram/
 
Wow, thats a pretty specific question for someone's 2nd post. Most completely new people are asking things like "Can I use my canon kit lens on a kx?". Way to jump right into the thick of things. Also, you appear to have registered on 12/9/2010, so could you please post some K5 and KR high iso shots from the future?
English site English date order dd/mm/yyyy

12 September 2010 has been and gone :)
Damned English. I always forget this site in in the UK
--
My PPG

http://www.pentaxphotogallery.com/home#section=ARTIST&subSection=7472316&subSubSection=0&language=EN
 
It fails on a regular basis if i hit the shutter full down as soon as i know its in focus, call it a fast trigger finger, i don't use the beeps but its pretty easy to tell when the lens has stopped moving and therefore is in focus and all this can happen in 0.2 sec or even less if the lens was already nearly in focus.

sometimes you don't see an issue and somethings it completely explains why a shot has motion like blur even at fast shutter speeds.
SR will not be caught in the middle of preparing and then mess things up. If it isn't ready it will not be used at all.
 
SR will not be caught in the middle of preparing and then mess things up. If it isn't ready it will not be used at all.
This is absolutely NOT the case with my K20D experience. SR definitely will be unsettled and cause motion blur if you press the shutter button before the "hand" icon shows that SR is locked in. Especially when trying to capture a fleeting expression or action, I now deliberatly turn off SR if I am on the hunt for a decisive moment.

-
RegQ
 
Humm..... Something that has so far escaped my habits... I never turn Sr off, however I rarely get sharp birds in flight even at high shutter speed. I will give this a try.

This sounds so obvious now... Oh well...
--
Steph
 

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