Search results for 'sensor cleaning' - page 614
K10d af not working
I normally use a lens cloth, dabbed on my tongue if I need a bit more cleaning power.
Posted by bettyswolloks on 15/11/2012 - 15:34
K100 D Bttery level indicator
I have never had a device that is so fussy about AA's as my K100D. I think it all started a few years back after using lithium AA's for a bit. The battery meter then showed no charge on my freshly charged AA's nimh's... that time I eventually got it working fine again by using some fresh alkaline AA...
Posted by walt on 16/11/2012 - 13:53
K-5 - Exposure Bracketing and Mirror-Up options
Stridey, one other complication to take into account is how the camara achieves the bracketing. Is it by varying aperture (yuk), exposure time (generally preferred) or ISO? If you want to ensure bracketing is perfomed by varying the the exposure time then you should use Av mode. It is also possi...
Posted by WaypointCharlie on 21/01/2013 - 17:41
k100d super odd sound?
:P It's the SR mechanism - the sensor is floating on a magnetic 'bed' that is controlled by the camera. It does make a light whirring sound. When off, and you move the camera around the sensor plate can also move - making you think there's something loose inside! Matt
Posted by MattMatic on 08/01/2013 - 14:50
k100d super odd sound?
ok thanks. i had read that somewhere else, but even when switched off it was doing it which is what worried me. i've read elsewhere though that the mech for it still runs even when it's disengaged. and makes the same noise when mirror up for sensor cleaning. might as well delete post if an...
Posted by ocatoro on 08/01/2013 - 15:12
k100d super odd sound?
even when switched off it was doing it which is what worried me That'll be because the electromagnets still have to be engaged to keep the sensor still. It's just that the sensor plate won't move when vibration is detected ;) Once the electromagnets are disengaged the sensor plate drops and moves...
Posted by MattMatic on 08/01/2013 - 15:47
Lens weight and camera shake ?
I spent quite some time today comparing the Sigma 28-70mm Epsilon with both the Pentax 18-55mm MK2 kit lens and also the Pentax F 35-70mm. The Sigma focussing seems much more reliable after cleaning the contacts on the lens. Focussing seems more accurate too, at or near infinity, but it still do...
Posted by andrewk on 15/01/2013 - 13:01
Sigma 50-150 2.8 problems
Have you tried cleaning the contacts on the lens? Also, is there any movement when it's on the body? I've experienced this on a large Sigma (can't remember which?) where I had to kind of hold and lightly twist to make the contacts connect otherwise I'd get a similar thing to what you're experien...
Posted by woodworm on 19/01/2013 - 12:31
Specks in viewfinder
In recent weeks I've been getting an increasing number of small specks/blobs in the K-5 viewfinder, possiblying because I've been changing lenses quite a lot. Fortunately the sensor is still clean. Are the specks likely to be on the mirror or the focusing screen? How should I set about cleaning...
Posted by WaypointCharlie on 21/01/2013 - 16:51
Specks in viewfinder
I fear it may be the use of the Rocket blower (to remove dust from the sensor) that got me into this position! Isn't the danger that the blower relocates the dust within the camera body, or injects fresh dust into the camera (the air isn't filtered)? Do you reckon the specks will be on the mirro...
Posted by WaypointCharlie on 21/01/2013 - 18:04
Specks in viewfinder
An arctic butterfly is unlikely to help you. If it is the mirror these are very easy to clean with a sensor swab and cleaning fluid - you just need to be careful and do not apply pressure otherwise you may move it out of alignment. It is entirely possible that the dust is behind the focus scre...
Posted by fritzthedog on 21/01/2013 - 18:55
Specks in viewfinder
Can the specks on the mirror/focus screen affect the operation of the autofocus? What horrible devices DSLRs with exchangeable lenses are! Would a glass window to protect and seal the internals affect the optical performance that much? After all, a lot of people attach a bit of extra glass to p...
Posted by bwlchmawr on 21/01/2013 - 20:08
Specks in viewfinder
If the dust is on the mirror then it's on the path to the phase detect AF sensor. So does it have to be severe to have any detrimental effect on AF? Of course, you could also have dust on the secondary mirror or AF sensor itself and never be aware of it.
Posted by WaypointCharlie on 23/01/2013 - 08:36
Manual focus with 2 Pentax cameras
I'd also double check the SR settings too... Probably try with 2s timer or mirror lockup on a tripod (which disables SR). You could also try using the Live View on the K5 to see whether you can achieve a better focus - since the LCD is a view off the sensor it represents the image captured (whic...
Posted by MattMatic on 24/01/2013 - 16:08
Filter cleaning
Hi guys, I was out walking with the dogs last week, one of them managed to flick a spot of wet mud onto the clear filter of my sigma 10-20. I left it well alone until I got home. It had dried solid by that time so I soaked it until soft again and gently wiped it away with my finger ensuring n...
Posted by Renster on 03/02/2013 - 10:08
Filter cleaning
Try an alcohol wipe (the kind they use in hospitals). The isopropyl alcohol will freely evaporate, leaving the glass clean.
Posted by steven9761 on 03/02/2013 - 10:13
Filter cleaning
That's great, I'll give it a to later. I was a bit worried about applying any kind of chemicals in case it affected the surface . Cheers Try an alcohol wipe (the kind they use in hospitals). The isopropyl alcohol will freely evaporate, leaving the glass clean.
Posted by Renster on 03/02/2013 - 10:23
Filter cleaning
I got some wipes and it's now back to new! Excellent bit f advice! Cheers Steve! Try an alcohol wipe (the kind they use in hospitals). The isopropyl alcohol will freely evaporate, leaving the glass clean.
Posted by Renster on 06/02/2013 - 19:34
Filter cleaning
Hi Renster Sir, that was good news getting rid of the smear. But what wipe did you use? I had a similar problem once, so I used the next best thing I had - Sears Lens Fluid, and it worked. I have lots of old filters, and prism lenses (multiple images) which I don't use much. I found them with some ...
Posted by nanhi on 01/04/2013 - 06:02
Filter cleaning
Hi nanhi, I used lens wipes that I bought from boots pharmacy. Cheers
Posted by Renster on 01/04/2013 - 08:26
