Search results for 'back focus' - page 2050
K5's two outer most AF points
Hi guys, Finally got hold of my Sigma 30mm 1.4 yesterday (had to collect it from the wrong address they sent it to!) and took a few photos @1.4 using the two outer most AF points, and got crazy front focus - around 10-20cm! However the lens is fine with the k5's centre 9 AF points and other l...
Posted by vincechu on 04/06/2011 - 15:57
K5's two outer most AF points
I noticed a problem with a DA21 I got when I was in the UK last. The lens isn't a great copy - with IQ weaker on the right hand side. Using the focus points on that side (both the furthest right, but also the top right one) produced very variable results, with the focus often way off. Could the perf...
Posted by Dr. Mhuni on 06/06/2011 - 08:12
k5 - when the lights go out
Am hauling myself up the learning curve and have been blown away by the colours and overall very, very impressed with my K5. Am also getting use to the camera's quirks. One thing I have noticed (and it's not really a major problem - more a minor inconvenience) is that once a day my k5 shuts down a...
Posted by Sherry on 14/06/2011 - 20:38
k5 - when the lights go out
Are you using the Live View screen as this gobbles up the battery. When on a tripod I use it and have noticed that it will display "Battery Depleted" and shut off. Then when you turn it back on you can carry on shooting for ages...albeit without live view (K-7 btw)
Posted by SteveEveritt on 14/06/2011 - 20:46
k5 - when the lights go out
Then when you turn it back on you can carry on shooting for ages...albeit without live view (K-7 btw) Same here. Regards
Posted by sam-joseph on 15/06/2011 - 07:34
k5 - when the lights go out
Thanks for your reply, Steve. I have found the same thing with live view and in general try not to use it. My problem occurs when looking through the viewfinder. After taking a lot of pictures, the camera jams, the lights stay on but nothing else works and I have to turn the camera off by taking ...
Posted by Sherry on 15/06/2011 - 07:40
k5 - when the lights go out
if it's the orange light on the back, then it might be because it's thinking. If it's anywhere else, then it should not be happening. Which firmware? Is lens correction turned off? Bret
Posted by bretti_kivi on 15/06/2011 - 08:07
k5 - when the lights go out
Just wait for the light on the back to stop blinking and you'll be fine if it's the buffer filling up. How many shots are you taking and how quickly?
Posted by johnriley on 15/06/2011 - 08:37
Strange noise in K5
When I review pictures on the LCD screen on my K5, sometimes there is a strange whirring sound coming from inside the camera, which stops as soon as I switch back to picture-taking mode. It only seems to happen with auto-focus lenses mounted on the camera, so I am guessing it is something to do with...
Posted by aliengrove on 17/06/2011 - 07:07
Lens VERY STIFF to mount/remove on ME Super
When my 645 came back from 'repair and service' I could barely mount a lens at all. It went back to Pentax and they said they 'adjusted the back focus'. Sorry I cant offer more information.
Posted by gartmore on 05/07/2011 - 15:50
K-X, dust on sensor - help?
No idea of whether it's deemed good practice, but I had the same issue and just puffed the rocket blower up into the viewfinder area (in a careful controlled manner), holding the camera with the mount facing downwards so hopefully any 'bits' fall out and not straight back on the sensor! It worke...
Posted by Pentaxophile on 29/06/2011 - 09:50
PKA Extension tubes.
I have 2 sets of Jessops tubes one is marked with PK and the other with PK/A. The reason I purchased both is because they both have the contacts so I can use my Pentax A 50mm and control it from the camera, no auto focus though, I almost always use Catch in Focus. On both occasions the advert contai...
Posted by SteveEveritt on 29/06/2011 - 23:20
PKA Extension tubes.
Formula; The magnification ratio of any tube-lens combination is calculated by dividing the tube size by the length of the lens. e.g. 50mm tube on a 100mm lens allows you to focus to .5 life size. But you will suffer from light loss, which is dependent on the tube-lens used. Hope this helps
Posted by CoDa on 29/06/2011 - 23:43
PKA Extension tubes.
Instead of PKA tubes, I use deglassed PKA TC's. Such TC's are more common and less expensive than tube sets I've seen, and removing the glass is easy. Magnification formula is: M = (TE-FL) / FL where TE is Total Extension and FL is focal length. A 50mm camera lens at infinity focus has 50mm o...
Posted by RioRico on 30/06/2011 - 03:57
Dust under K-5 rear LCD
Dust and debris gets into a camera when lenses are changed, but is unlikely to be coming through the weatherproof seals. It could enter through zooming non-sealed lenses as air pressures need to be equalised and there is free movement of air. The weatherproofing works just fine, so don't let that...
Posted by johnriley on 30/06/2011 - 22:47
Dust under K-5 rear LCD
I can't understand how dust can get inside the LCD at all... whether the camera's weather sealed or not. It can't be right, and I would definitely send it back.
Posted by Pentaxophile on 30/06/2011 - 23:58
Dust under K-5 rear LCD
Dust and debris gets into a camera when lenses are changed, but is unlikely to be coming through the weatherproof seals. It could enter through zooming non-sealed lenses as air pressures need to be equalised and there is free movement of air. The weatherproofing works just fine, so don't let that...
Posted by beardedwombat on 01/07/2011 - 12:58
Problem with K-x's Live View
I've encountered a weird issue with my K-x. I've had the camera for over a year but the problem is recent. Whenever Live View is on, whether filming or taking pictures, when I press the shutter button half-way down, the Live View goes blank and the mirror slaps. Instead of doing the contrast d...
Posted by hanskan on 05/07/2011 - 14:15
Something went wrong with my K7 in an instant... Pretty worried.
On the 4 way controller on the back, the UP button takes you to drive mode. From there you can see which option you have selected, and you can change it. Just set it to basic single shot. See if that cures your problem.
Posted by Blythman on 08/07/2011 - 17:04
Something went wrong with my K7 in an instant... Pretty worried.
Are you sure you haven't inadvertently changed the ev setting? If you press the +/- button just behind the shutter release on the left it will show the ev value. If it's not in the middle, press that button and twiddle the rear (or front, depending how it's set up on your camera) wheel until it's ba...
Posted by aliengrove on 09/07/2011 - 20:20
