[imtheguy]

On my K20d I always (if I remember) flip off SR while shooting BIFs or surfers. With the improved version on the K-5, and the PF review advising to leave it on at all times, does that mean while panning too? I am talking about at shutter speeds of 1/1000 or so.

Its difficult to do a controlled test but I have not been able to put my finger on any difference when its on or off. I would love to leave it on all the time if possible.

[inferno10]

You should shut off the SR when panning.

- Jason

[dgaies]

I took some panning shot this afternoon and left SR on even though my shutter speeds were short enough that I didn't need it on (1/1000-1/2000). The shots turned out fine. Hard to say how it might have gone (with or without SR on) if the shutter speed was lower.

[Mike.P®]

I have always left SR on when panning ... K10D. K20D. K-7 and now K-5.

Never seen any problem.

[glanglois]

I'm in your league: off if I remember.

But at 1/1000, I'm not sure there's any benefit in any case. And if there's little to no benefit, I'd wonder if the SR isn't counterproductive.

[chattphotos]

That explains why some of my panorama shots were blurry... because I was moving with SR on when I snapped the pic.

Tested my K-7 in liveview while panning around the room, slow and fast pans... yes the SR does try to compensate for the radial pivot of motion.

SR compensation will be more noticeable when panning upwards/downwards.

At a point, shutter speed like 1/500+ will either move too fast for SR or when shooting slower, you're more susceptible to more motion that than SR can compensate for

[imtheguy]

It sounds like nobody knows for sure. In which case it just may not make a difference.

Thanks for responses!

Inferno - yes, traditional documentation says turn it off. But like others, I have yet to SEE the difference when I forget. Again, just talking K-5 and shutter of 1/1000 or faster.

[CRPhoto]

I used it ON on the K20D...and never really noticed any difference. I'm just starting to use the K5 so we'll see....I even use the Sigma 150-500 OS with the SR ON..and pictures come out fine.

[souless]

Dear all,
Does K-5's SR compensate both vertical and horizontal directions?
Thank in Advance!

[imtheguy]

Dear all,
Does K-5's SR compensate both vertical and horizontal directions?
Thank in Advance!

I believe it does. Cameras with a special "panning" mode have SR that ignores horizontal motion.

[JeffJS]

I did some experimenting while doing my SiN photo one day.. It may have something to do with the speed of the pan but I didn't find it helping to turn it off. In fact, when I did turn it off, I found I had more vertical blur, probably from tilting the camera at shutter press.

This is the result of one of the panning shots (SR On).



(smoke and sky added in photoshop)

[imtheguy]

cool shot Jeff. I like the panning effect.

[Eruditass]

If pentax introduced vertical only IS like the other manufacturers, that would be awesome.

[imtheguy]

If pentax introduced vertical only IS like the other manufacturers, that would be awesome.

As cool as it sounds, I have not seen nor heard evidence that the current SR makes a problem while panning and lord knows i pan a lot and forget to turn it off a lot. Of course I am typically at a shutter of 1/1000 or above so maybe it ceases to matter then.

[falconeye]

The SR in a pan should work better in LV where the sensor is driven against the boundary and then should effectively become a vertical-only SR. I am not sure though.

I've seen enough examples where it seems to work in pan out of the box. There may be a yaw angular speed threshold built in beyond which yaw corrections are turned off.

If this is the case, slow pans may be a problem while fast ones are not.

It could even be as cool as the camera measuring a yaw angular speed offset while the SR calibrates and then make the pan smoother...