Search results for 'sensor cleaning' - page 151
Which wide - short tele lens to go for?
When I first got the KX both my Wife and step-daughter commented on the colours so it's not just about maximum aperture. I thought it was the sensor that gave that gave those punchy colours. It's a good point about having the 17-70, sometimes 50mm isn't quite long enough. The Pentax lenses are mor...
Posted by sportyman531 on 24/11/2012 - 18:43
DA 17-70 - any tips?
I have had the same problem and found nothing much seemed to help. I would try re-locking the lens and sometimes it would help, which I suppose would be similar to Philip cleaning the contacts. I'm trying some alternatives at the moment and so far it's the Pentax 16-45 with a Sigma 24-70 that's ...
Posted by bforbes on 31/12/2012 - 10:28
Sigma 18-125 or Tamron 18-200
Looks like there may be a bi of variation in the standard kit lens, be that the WR version or not. Some seem to rate it very highly and others have not been particularly pleased with it. One small thing to note (happy to be corrected if this is not the case) is the Sigma versions with the in len...
Posted by richandfleur on 10/01/2013 - 23:09
My first Prime for DSLR - DA 50mm, 35mm or ?
I currently own 2 lenses for my DSLR: the DA 16-45 and a Sigma 28-105. I'm looking to pick up a prime lens for walkabout duties - something small and reasonably fast. I'd prefer to have AF - so i'm currently considering the DA 50 and DA 35. The '35 is pretty cheap, but is it any good? Which foca...
Posted by Papa_Lazarou on 07/01/2013 - 11:21
My first Prime for DSLR - DA 50mm, 35mm or ?
I have the DA35 which is a great lens, but i often find it to be a very inbetween focal length that i either feel is to wide or too narrow,50mm on a K5 sensor i find suits me better.
Posted by bluenose82 on 07/01/2013 - 13:07
Why use 'old' glass?
I can't add anything to the eloquently expressed views above. So I'll just endorse them! The only real drawback is the lack of a true wide angle for landscapes on a cropped-sensor camera. My widest is 24mm. I love using old lenses. Mind you, it's great when I switch back and put everything on ...
Posted by bwlchmawr on 12/01/2013 - 07:41
Best use
Following on from the topic Old Glass and trying to stretch the topic a little more. I have a number of manual focal lenses and wonderd if some of the members might point out the best use of the lens or may be a use genurly not thought of that may have worked out well. I agree by the way these lense...
Posted by DaveHolmes on 16/01/2013 - 20:30
F stops converters?
Here you go http://photo.stackexchange.com/questions/4928/how-does-a-teleconverter-affect-depth-of-field So, it is my understanding that the 2x converter works the same way as the crop factor of an APS-C sensor. Thereby the focal length of a lens is the same, but the angle of view of the lens ...
Posted by Offertonhatter on 16/01/2013 - 23:15
23mm 2.5 and 27mm 1.9
Ricoh filed patent (2013-7853) for a new 23mm f/2.5 and 27mm f/1.9 lenses for mirrorless APS-C sensor. Not clear if those lenses will be used for the GXR system or for a new GR compact camera Pentax announced the retro designed MX-1 compact camera Pentax announces Efina compact camera and fir...
Posted by stub on 21/01/2013 - 11:49
FA 31 Limited - why is it so good?
Those early lpmm tests were marred in various ways, but of course the contrastier shot can be read as sharper. That's why everyone was so pleased when MTF lens testing was introduced, apart from few people understanding the mysterious graphs! I don't think everyone was pleased :lol: The staff on...
Posted by Algernon on 26/01/2013 - 15:44
FA 31 Limited - why is it so good?
You have a point there Algi. Lens tests now need to be re-done every time we get a leap in sensor performance. Not very realistic as an expectation perhaps. Over a period of time it might be a problem, but it's probably tolerable at the moment.
Posted by johnriley on 26/01/2013 - 15:51
FA 31 Limited - why is it so good?
I absolutely agree Chris - we all have differing taste. However it was your comment that ".... higher colour contrast makes them much more 3D than the German lenses" that I would dispute. I've seen wonderful 3D rendering from many lenses, including Zeiss, e.g the ZE/F II 100/2, to name but one, is s...
Posted by Frogfish on 26/01/2013 - 16:49
Anybody used Harrow Technical for repair?
What sort of price are we looking at for cleaning fungus out of a lens?
Posted by johnriley on 23/02/2013 - 10:13
Anybody used Harrow Technical for repair?
What sort of price are we looking at for cleaning fungus out of a lens? Well I paid £32 for removal of fungus and cleaning grit out of the AF gears, cost me £2.50 to post and return postage included in the fee. I think that is very reasonable
Posted by StephenHampshire on 26/02/2013 - 17:18
service manual for DA 35mm f/2.4? - cleaning?
Anyone ever stripped down a DA35? Documents for it? :idea:
Posted by blob on 02/02/2013 - 21:12
Elements in teleconverters...
7 element converters offer better corrections. As you are magnifying the image you are also magnifying the lens defects, so the TC needs to be top quality and suited to the lens ideally. This is why there are some converters matched to lenses, but they can be as expensive as the lenses. Converter...
Posted by johnriley on 06/02/2013 - 09:51
Elements in teleconverters...
Tubes all the way, there is nothing between the lens and the sensor to muddy the picture. The key to macro photography is light and you will loose light with either setup but adding the additional glass will harm your images. Pentax A 50mm on 75mm of tubes with contacts and Catch in focus
Posted by SteveEveritt on 06/02/2013 - 20:09
New Lens box opening instruction video!
Love those Box opening videos. Only rivalled by videos of people cleaning their kitchen worktops or putting the bins out! :mrgreen: Look forward to seeing some pics taken with this lens though. It better be good for £6 grand. :)
Posted by Smeggypants on 12/02/2013 - 14:35
New Lens box opening instruction video!
Love those Box opening videos. Only rivalled by videos of people cleaning their kitchen worktops or putting the bins out! :mrgreen: And what's wrong with videos of people putting bins out?.. I find them both enthralling and entertaining in equal measure"!! :D :P If I could afford this lens, I'd ...
Posted by steven9761 on 12/02/2013 - 15:27
Pentax F 28 - 80 Macro - Strange problem
I have a strange problem with the 28 - 80mm lens I use on my K10d It's not causing me any great heartache, but I'm curious as to if it is a fault, design, or something else. With the aperture fully open I cannot always get focus lock at 28mm. I can zoom in to about 35m and get lock on the same obj...
Posted by Father Ted on 15/02/2013 - 15:49
