Search results for 'uv filter' - page 265
K5 sensor overheating/on way out?
Just saw this thread. I noticed something very similar on my K-5 when I was playing around with an IR filter. In weak sunshine the exposure was several seconds with the lens stopped down, and there was a distinct band of light across the bottom of the frame. It was simply light coming in via the v...
Posted by karma mechanic on 01/03/2011 - 18:45
K5 sensor overheating/on way out?
I've just been back & read the whole thread (usually a good idea before commenting) The problem occurs with a Cokin ND110, and appears to be still present (but improved) with the eyepiece covered. One other possibilty is light getting on the back of the Cokin filter. Their filter holders are not i...
Posted by petrochemist on 24/01/2012 - 11:12
K5 sensor overheating/on way out?
Thanks for resurrecting this topic...it's reinforced my assumptions after trying out my own '10-stop ND' filter for the first time, about 3 weeks ago. This was one of the best of a bad bunch! The sun was quite strong and coming in from the right hand side. Right...now where did I put tha...
Posted by stopher on 24/01/2012 - 20:50
K5 sensor overheating/on way out?
I think this is almost 100% definitely light leakage, either via the eyepiece or at the filter end. I have experienced the same issues taking Infra-red shots with my K-x and a screw on Hoya filter, but only in certain lighting ocnditions which re-inforces the fact that it is leakage of light. I su...
Posted by davidstorm on 24/01/2012 - 22:16
K5 sensor overheating/on way out?
I had exactly that same effect when I used a welding glass blu-tacked to a filter ring. Two things cured it :- A black electricians tape around the edges of the glass B Blacking out the eyepiece (see my previous comment) regards Bernard
Posted by Frogherder on 24/01/2012 - 23:24
K5 sensor overheating/on way out?
I understand, perhaps I don't experience this as a problem because I'm still stood behind the camera, so it's in shadow anyway. On the face of it, to have so long and exposure in light bright enough to cause a problem, seems like quite an extreme situation, so is this happening when very dark ND ...
Posted by nass on 03/05/2012 - 13:55
K5 sensor overheating/on way out?
A couple of points: black velevet scrunchies that girls tie their hair back with are exactly the right size to fit around a lens barrel and block out reflected light on Cokin and similar filter systems. Get down to your local branch of Accessorize with 90p in your hand. Light entering the viewfin...
Posted by gartmore on 04/05/2012 - 11:22
Sensor Clean (wet)
Your camera model will influence your decision. Some of the older Pentax bodies could use Eclipse fluid. Newer ones require Eclipse 2 because of the coatings on the low-pass filter (the bit you actually clean). I've never had any muck on mine that couldn't be shifted by the Arctic Butterfly so I ...
Posted by Mannesty on 01/03/2011 - 15:47
Sensor Clean (wet)
Your camera model will influence your decision. Some of the older Pentax bodies could use Eclipse fluid. Newer ones require Eclipse 2 because of the coatings on the low-pass filter (the bit you actually clean). I've never had any muck on mine that couldn't be shifted by the Arctic Butterfly so I ...
Posted by gartmore on 01/03/2011 - 18:14
Sensor Clean (wet)
Your camera model will influence your decision. Some of the older Pentax bodies could use Eclipse fluid. Newer ones require Eclipse 2 because of the coatings on the low-pass filter (the bit you actually clean)... Apparently, this has been superseded. It seems that Eclipse 2 was hastily put out af...
Posted by Oggy on 01/03/2011 - 21:04
Ebay returns
Cheers all, I'm annoyed more than anything that the tubes are broken, I took a punt as I hoped that they might have the contacts...but didn't. And if they didn't I wanted to put them straight back on and hope to get back what I paid. But I have a conscience and could not out of principle put these b...
Posted by mayday on 06/03/2011 - 21:56
Dust on ,my focus screen
The mirror is already treated by the manufacturer How do you know? I know the filter on the sensor has an anti-static coating but never heard something about the mirror.
Posted by Anvh on 08/05/2011 - 11:40
Any thoughts on why this is so noisy?
Has the camera applied a filter to the image?
Posted by geordie01 on 10/05/2011 - 15:17
Viewfinder puzzled newbie
That doesn't sound normal... do you maybe have a filter on the lens or something... how is the viewfinder without a lens on the camera? When you take the lens off take a look at the mirror and the plastic screen above it but be carefull not to thouch it.
Posted by Anvh on 17/05/2011 - 23:02
what do you think stain??
my k-r sensor his crystal clear, his my camera covered the whole 2 years against these ? its a royal pain in the a--e i know that:twisted: Like said it's a manufacturing defect. There is a filter infront off the sensor and the dirt is sandwitch between it so if it's there it's there if not then not...
Posted by Anvh on 12/06/2011 - 08:05
what do you think stain??
Whatever the contamination is, it seems to be invisible to begin with but causes a gradual failure of the adhesive between the filter and the sensor, creating those little 'bubbles'.
Posted by Pentaxophile on 12/06/2011 - 10:09
K-7 and trouble with USB connection!
I have to strongly (but politely) disagree with that comment. I have had card readers which you completely corrupted cards, and the cheaper the reader, the more likely it is to happen. The card reader/writer built into the camera is of a far, far higher specification so you are much safer us...
Posted by Don on 14/08/2011 - 18:46
Focus Issues with 55-300mm and Circular Polariser
Hi all I'm sure others have experienced the issues I am having at present. I often use polarisers, but have only recently bought a 58mm for my DA L 55-300mm. I have found it useless as the lens focus is so soft with the filter fitted that the pictures are not worth keeping. This worsens the lo...
Posted by davidstorm on 04/09/2011 - 11:29
Focus Issues with 55-300mm and Circular Polariser
Because it loses two or three stops of light, the maximum aperture of the lens at longer focal lengths no longer enables the use of AF. I'm not sure why you feel the need for a polariser on such a long lens? John It's not the autofocus that isn't working. The autofocus still operates fine. ...
Posted by davidstorm on 04/09/2011 - 22:33
Focus Issues with 55-300mm and Circular Polariser
Hi David..Interesting subject..I have just recently purchased the same lens (not used too much yet)and i was thinking of getting P/L filter for mine..Already fitted a hood and U/V filter(Kenko)..Is it the Hoya PRO1 P/L filter you have ordrered?..If so i would be interested in the result.. Regards....
Posted by grandadchris6 on 05/09/2011 - 09:51
