Search results for 'sensor cleaning' - page 609
Sensor flare, tamron SP90
That is the drawback of that lens. I have only noticed it once when I was at f18 and even then it didn't show on all photos at f18. I mostly use the lens wider so had never noticed. The lens produces wonderful warm colours and a smooth look, I think it has real character and the 1:2 I find very u...
Posted by DrOrloff on 11/03/2012 - 13:52
Sensor flare, tamron SP90
Barrie, you share my first thoughts, but then I thought about spectacle lenses. In most ophthalmic glass the two faces are different, so could be regarded as having a right and wrong side. Yet in extremely rough and ready observations with my wife's specs, there appeared to be no noticeable differen...
Posted by moose on 11/03/2012 - 20:33
Sensor flare, tamron SP90
Have a look at Fig. 2.9
Posted by bforbes on 11/03/2012 - 22:56
I think my k-r is dying.
It might be worth getting a cheap AA battery adaptor from ebay and trying some AA Sanyo eneloops in it to see if the problem goes away? Also, try cleaning all the contacts between lens and body thoroughly with isopropyl alcohol. It seems most likely to be a battery / contact issue of some sort. ...
Posted by davidstorm on 16/03/2012 - 21:04
K7 Focus Screen
Thanks to all who replied. I chickened out, thinking of my eyes, nerves, how things tend to break in hands for no reason etc., and took it in to a camera repair shop in Newcastle where a kind gentleman did the job for me at no charge ( I put a couple of quid in the lifeboat charity box on the counte...
Posted by tyronet2000 on 16/03/2012 - 15:46
getting all over sharpness?
I hear what you are saying but not convinced about that. Put on am extreme wide angle, say a Sigma 10mm, frame the subject as before and even the house across the road will be within the depth of field, even with the lens at a wide aperture. Take that same photo with a small sensor camera (a t...
Posted by JAK on 03/04/2012 - 01:31
getting all over sharpness?
So what do you suggest the OP does to enhance his image.. that is what this thread is supposed to be about! I do not disagree with what you have said but it isn't that cut and dried. The cropped, wider lens may be far superior (sharper) to the longer lens then the reverse would be true. But what ...
Posted by JAK on 03/04/2012 - 19:24
getting all over sharpness?
that's why we would like a full frame sensor from Pentax. John A "full frame" (which is a misnomer, since APS-C is a full frame also) would give LESS depth of field with all parameters being EQUIVALENT. I already said that the only solution (in camera) is to use a smaller aperture. Otherwise,...
Posted by pentaxian450 on 03/04/2012 - 21:45
getting all over sharpness?
that's why we would like a full frame sensor from Pentax. John A "full frame" (which is a misnomer, since APS-C is a full frame also) would give LESS depth of field with all parameters being EQUIVALENT. I already said that the only solution (in camera) is to use a smaller aperture. Otherwise,...
Posted by JAK on 04/04/2012 - 01:08
K-r not working!!
Try cleaning the contacts on the lens and the lens mount with isopropyl alcohol. Regards David
Posted by davidstorm on 06/04/2012 - 23:24
K100D - DUST ON SENSOR
I've only had my K100D a year - bought it as ex demo model and now find it has dust on the sensor and am wondering how best to clean it myself. So many different methods, products and recommendations - it's all very confusing. I propose to use some isopropyl alcohol and some lint free swabs. I do...
Posted by gramar on 14/04/2012 - 00:00
K100D - DUST ON SENSOR
You might want to search the forum (and the rest of the web) for 'arctic butterfly', which is a special brush created for sensor cleaning - I know in general people praise it very highly on here, although I have not used it myself... Cheers
Posted by matwhittington on 14/04/2012 - 07:38
K100D - DUST ON SENSOR
If a dry method works, I would use that first; I use a rocket blower for that. A wet method, for me, is a method that will be used if a dry method fails; I'm not brave enough and take it to my dealer who does it quickly for me (for free).
Posted by sterretje on 14/04/2012 - 11:13
ist D connection problems for remote assistant
Thank you for trhe rapid and useful responses guys. Yes, RA will work with the ist D as long as you have greater than V1.0 firmware installed (this made it compatible). Yes...the lead in question. Claimed compatible from a 3rd Party and in fact says Cable-295 USB2.0 (though I thought the ist D was U...
Posted by edwardone on 18/04/2012 - 12:19
Dissapointing retailer
I think the problem is Curry's. I wouldn't expect good customer service from them (even though they should provide it). When I got into my K20 repairs saga I ended up dealing directly with Johnson's Photopia from the second repair onwards (as I had little support from the Pro dealer). Johnsons ...
Posted by DrOrloff on 20/04/2012 - 10:18
Dissapointing retailer
Disappointing Currys definitely. If you want a sob story: Purchased K5 in Jan, 3 weeks later Len Release Button falls off, sent to Johnsons (2wks) with request to check sensor cleaning as I had noticed an unusual amount of dust on images, K5 returned still noticed dust, in particular black speck...
Posted by Dodge69 on 20/04/2012 - 11:49
Calculating focal length - ist D...
Essentially correct With a 300mm lens + x2 + x3 the focal length is 300x2x3 = 1800mm The combination remains at that irrespective of whether it is a 35mm film (full frame) or 2/3 DLSR sensor. However the visual effect because of the smaller sensor is to imitate a 2700mm lens regards Berna...
Posted by Frogherder on 21/04/2012 - 16:40
Super-A seems to have stopped working
Thanks Bob, I've tried several sets of batteries including new ones and some old ones that fire my P30 & P50 no problem. I've tried cleaning the contacts/batteries. I can't remember whether I left it with the shutter cocked or not (I usually leave my mechanical shutters un-cocked), so I don't ...
Posted by johnha on 29/04/2012 - 12:53
What is this? - unusual marks on Pentax-M 80-200 front element
Hello all, Was cleaning my Pentax-M 80-200 for the first time today and noticed strange lines on the edge of the front element that go around the entire circumference. I don't think it's fungus as I've got a couple of lenses with fungus present and this doesn't look the same. That bein...
Posted by Blues_Breaker on 29/04/2012 - 11:31
What is this? - unusual marks on Pentax-M 80-200 front element
It looks like it could be fungus to me? Also you seem to have a lot of cleaning marks on the element (circular lines). I'm sure someone else will be able to tell you exactly what it is if it isn't fungus. Regards David
Posted by davidstorm on 29/04/2012 - 12:31
