peterf

Joined: 21st June 2013

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peterf
Every time I receive the newsletter email, I look at the competitions, only to find the newsletter arrives after the closing date for the monthly and on the day of the closing for the weekly.

Why isn't it possible to actually give us any notice, those of us who aren't on the site every day?

And what on Earth is the point of alerting us to a competition that has already closed????

Comment by peterf posted on Newsletter arrives after the closing date for competitions!! at 01/02/2015 - 22:55

peterf
p.p.s Not the same lens as I had on K10D, that was a Sigma 17-50 I think, something like that, and I sold that camera about 5 years ago.

The menu option to adjust focal length for SR is not available, greyed out.

However, I did find an interesting menu option (I find more features every time I look!) called Composition Adjustment which shifts the sensor horizontally, vertically and rotationally. I'm not really sure what use it is as you can't see through the viewfinder and check the composition at the same time, however by shifting the sensor I can easily get the kind of error that I originally described, so it must therefore be a SR problem where the sensor ends up somewhere other than dead centre when I press the shutter button.

I'm going to leave the SR off from now on and see what happens.

Thanks for the sanity check Gravelrash, and further contributions still very welcome from all.

Comment by peterf posted on K30 - viewfinder alignment problems? at 24/05/2014 - 16:29

peterf
p.s. another clue is that normally I get no vignetting in the corners of images, but when the camera is showing the problem described, I also get vignetting in the top right corner, as you can see in the image above. That's not there on any correctly framed images.

Comment by peterf posted on K30 - viewfinder alignment problems? at 24/05/2014 - 16:21

peterf
Hi, you are quite correct in saying this is a lens with built in SR in its Nikon and Canon versions but it's removed on the Pentax fit.

Comment by peterf posted on K30 - viewfinder alignment problems? at 24/05/2014 - 16:18

peterf
I'm using a Sigma 18-125 AF lens, the worst shot, described above, was taken at 22mm. The SR selection menu doesn't appear when I fit the lens so I can only presume it's correctly reading the focal length.

I just found an even worse image, taken at 36mm which I've attached below, resized by 25%. I was about 3 metres from the doorway, and in the viewfinder the central painted area was centred in the frame. There is some lens distortion but that doesn't explain why the image isn't centred.

Comment Image


I'll try some test shots with SR off and see what happens.

Comment by peterf posted on K30 - viewfinder alignment problems? at 24/05/2014 - 15:59

peterf
My old K10D used to have a problem whereby the image that the camera recorded wasn't what was in the viewfinder, it was rotated slightly, which I put down to a badly adjusted mirror.

However, my new K30 is doing the same thing, which I noticed this week while photographing graffiti on shop doorways. The alignment error seemed to change from one frame to another, sometimes it was a rotation error, sometimes it was a quite considerable horizontal shift. On a door way about 4 metres/yards away, I had to frame the shot about 40cm to the left in order for the actual image to align with what I wanted to capture.

I've ended up having to frame wider and manually edit the images, which defeats the object of having a 100% view in the viewfinder.

What's causing this? Is it the shake reduction?

Comment by peterf posted on K30 - viewfinder alignment problems? at 24/05/2014 - 15:10

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