Search results for 'sensor cleaning' - page 143
Relationship between lens sharpness & sensor size.
I can't work out how to add the image to this place marker. Sorry. Some instructions here:
Posted by JAK on 27/01/2012 - 16:53
Relationship between lens sharpness & sensor size.
Thanks Jak, I have found the site difficult to use for lack of instructions. I don't have access to a web depository and the Gallery isn't intended for this purpose so I shall not be able to show you the test images. The new 35mm lens is sharper in the corners and does show better bokeh but for m...
Posted by Pikaholic on 27/01/2012 - 20:15
How much dust is too much?
Inside I am afraid. The outside was also dirty when it arrived but I have given it a good clean with lens cleaning fluid and a microfibre cloth. Possibly the seller assumed that all the dirt he could see was on the outside and never knew that it was inside as well. :roll:
Posted by eddyc on 26/01/2012 - 23:49
How much dust is too much?
A thought is that the seller bought it cheaply because it was full of fungus and did a quick and dirty(!) cleaning job then sold it on at a tidy profit. Pure speculation though!
Posted by greynolds999 on 30/01/2012 - 14:04
K20D Which Lens Please
I guess it's a case of reading the manual, then trial and error with the settings until you get a set you are happy with. Do you have a copy of the manual? If not, an electronic version is available. Why have you been 'forced' to set the WB to auto? One obvious difference between the K10D ...
Posted by JohnX on 31/01/2012 - 16:08
K20D Which Lens Please
CCD cameras almost always seem "cleaner" than CMOS cameras at low ISO. The main reason manufacturer turned to CMOS sensor is cost, not image quality. Also, high ISO seems better controlled with CMOS sensor. But, at low ISO, a CCD sensor is likely a better solution.
Posted by pentaxian450 on 01/02/2012 - 01:34
K20D Which Lens Please
Hello Spacus, you have some great advise above from the beautiful Pentaxians on this Forum. I am responding as I have the Sigma 70-300 APO and a K20D bought in early 2009 from B&H New York. a) the K20D remains one of the most popular DSLRs yet. There is some truth in the saying "you are buying some...
Posted by nanhi on 01/02/2012 - 05:22
Lens cleaning (internal)
Just wondered if anyone could help me out. I bought a vintage Sigma lens on ebay that was meant to be in superb condition - however it arrived today and the inside looked more like a petri dish! Annoyingly my m42 adapter is still in the post so I've not been able to check the image qualit...
Posted by Radlynx on 31/01/2012 - 16:36
Lens cleaning (internal)
IMHO straight back to the seller, unless the description was accurate.
Posted by johnriley on 31/01/2012 - 16:51
Lens cleaning (internal)
Agree with John did you use paypal out of interest ?
Posted by pianoman on 31/01/2012 - 17:04
Lens cleaning (internal)
Yes, back to seller first :) If not, apparently fungus can be cleaned with Pond's Cold Cream :D ;) Matt
Posted by MattMatic on 31/01/2012 - 17:07
Lens cleaning (internal)
I've also had a lot of luck with Naptha (lighter fluid) for cleaning lenses of fungus. What kind of lens is it? If it's a zoom, then I wouldn't use it as a "learning how to take a lens apart" lens - getting the helicoids correct on zooms can be tricky! On the other hand, old MF primes are often idea...
Posted by Cuchulainn on 31/01/2012 - 17:31
Lens cleaning (internal)
I did pay by paypal yes - the only reason I'm looking at my options really is the relative amount of money I'll get back once I've paid to have the lump of metal sent back.. You've probably guessed its a zoom.. there's also a macro focus ring as well so even more moving parts to play with! All in...
Posted by Radlynx on 31/01/2012 - 17:57
Lens cleaning (internal)
The seller really ought to reimburse your return postage - at least that's what I'd be demanding! Withhold your Feedback until this is resolved to your satisfaction. Due to the value of the lens, it's probably just a case of getting a refund and binning the lens. I doubt I'd consider cost or effort ...
Posted by Pentaxophile on 31/01/2012 - 18:02
Lens cleaning (internal)
I did pay by paypal yes - the only reason I'm looking at my options really is the relative amount of money I'll get back once I've paid to have the lump of metal sent back.. You've probably guessed its a zoom.. there's also a macro focus ring as well so even more moving parts to play with! All in...
Posted by pianoman on 31/01/2012 - 18:06
Lens cleaning (internal)
Only try dismantling it if you are not afraid of losing it. I have succesfully cleaned some old Takumars but ruined a Takumar 200mm F4 as I could not re-assemble it. Best bet is send it back for a refund, or argue with the seller and get a load of money knocked off, then try cleaning it. If it cl...
Posted by davidstorm on 31/01/2012 - 18:32
Lens cleaning (internal)
When you are talking to the seller, make sure you do not even hint at giving them negative feedback - if you end up having to get eBay to refund the fees they get really awkward and unhelpful if it looks like you've been threatening people with negative feedback.
Posted by Cuchulainn on 31/01/2012 - 19:55
Lens cleaning (internal)
Good point it will appear like you are blackmailing them and not worth doing unless at the end of it all you remain unhappy Neg feedback isnt a weapon its your experience Who knows you may still give a green or grey ....hope so
Posted by pianoman on 31/01/2012 - 19:59
Lens cleaning (internal)
Just contact the seller if it can't be resolved easily then just do a 'item not as described' through eBay they almost always side with the buyer
Posted by apeksdiver on 31/01/2012 - 20:43
Lens cleaning (internal)
The seller has been entirely reasonable about it - I have a refund and I have the lens! I suppose the next question is whether I should be worried about any spores from this and keeping it a country mile from everything else, or is that bordering on mild paranoia?
Posted by Radlynx on 31/01/2012 - 20:56
