Search results for 'sensor cleaning' - page 164
My 150-450 DFA is a bit of a dud
This applies to many brands and products. In the photography business the oil stains of the Nikon D600 sensor and the mirror box reflections of the Nikon D750 come to mind. How could you forget the sensor staining issues with the original K5? Cough-mirror flap-cough!!!
Posted by pgweber on 27/06/2015 - 10:03
Disappointed with my P645 glass...
As someone who's used Pentax gear since the late 1960s, I have always had great respect for it glassware, whether for 6x7 or 35mm. A few weeks ago I bought a lovely 645D with 3 lenses and couldn't wait to get out there and start snapping. I already use the Contax 645 system, Mamiya RZ67 gear and h...
Posted by biggles3 on 01/07/2015 - 02:37
Pentax Lens praise from Ken Rockwell of all places!
I can see the points about the interface. Forgetting this idiot, cos I really don't like him, or his 1990's styled website, I can see how the font etc could be improved. User interfaces have come a long way in the last few years, and I'd like to see Pentax pick up on this. This is not a popular c...
Posted by richandfleur on 10/07/2015 - 03:28
Pentax Lens praise from Ken Rockwell of all places!
Although Olympus, Fuji , and Panasonic ,only have cropped sensor cameras , yet are rarely if ever critisized in media. Clever ,marketing people at Olympus have claimed their image quality is as good as full frame and press are Agreeing with them. personally iI feel they need to move into emerging m...
Posted by theonenadeem on 10/07/2015 - 18:13
Last minute lens decisions: What to take for a 2 month trip?
I travel quite a lot and for a couple of years now have settled on just the 50-135 and the 20-40 Ltd, both excellent lenses and both weather/dust resistant - I'm not sure that the 17-70 is. To travel really light it is hard to beat the Pentax 18-135 as a do-most-things lens. I have no experience of ...
Posted by Jimbro66 on 28/07/2015 - 12:18
Turnaround Times for lens repairs at Pentax FR
Do Canon really have 90% of the professional market? Anyway, one point I did pick up on in there is that Daronl describes Pentax as a "me too" company, which, with its wide range of unusual and sometime exclusive lenses I find hard to recognise. Who else offers lenses like the Limited range, who els...
Posted by Daronl on 09/08/2015 - 19:47
150-450mm lens 35mm equivalent shown as 230-690mm
It may be because bizarrely, not all APS-c sensors are exactly the same size, and as such the 'crop factor' may not be exactly 1.5 depending on brand. So if the sensor in your Pentax is 23.7 x 15.6mm (which it may well be), then the crop factor in ratio to a 35 mm film frame would be 1.532, and the ...
Posted by microlight2010 on 25/08/2015 - 00:08
Pentax FA 70-200 f2.8 release date pushed until next year
Agreed with the above...better not to release a lens (or camera) that is not fully rested and 100% (well 99.99% anyway) fault free, than have a whole load of early problems (remember sensor stains, oil from on sensor(Nikon), white orbs (Fuji)) Not all the bad news is from Pentax -"On August 4, Niko...
Posted by StephenHampshire on 01/09/2015 - 10:51
Pentax FA 70-200 f2.8 release date pushed until next year
i think there is a diferance between a couple of month and over a year pentax/ricoh need to get there house in order first not just keep fobing people off with no explanation at all it dose not inspire new customers or poach them from other brands Agreed with the above...better not to rel...
Posted by stu62 on 01/09/2015 - 21:21
Pentax FA 70-200 f2.8 release date pushed until next year
Apple once released a version of their iPhone late because it simply wasn't ready. The decision was expected to adversely affect their stock market price but it had the opposite effect in fact their share price rose as a result of their decision, which was deemed very brave. But as Steve Jobs said, ...
Posted by LennyBloke on 02/09/2015 - 12:04
Pentax SMC K28mm f3.5 on Pentax fullframe
Very interesting comparison, Bjorn. I have the "M" version of the lens (which I love). It works well on current DSLRs, I wonder if a highly populated 35mm sized sensor will allow these venerable lenses to shine. I guess we'll find out in the fullness of time.
Posted by bwlchmawr on 01/09/2015 - 08:21
Pentax SMC K28mm f3.5 on Pentax fullframe
Thank you all for interesting feedback! My aim with this thread was simply to show how the K28/3.5 performs within the 24x36 format, it is already one of my favourite lenses on APS-C. A future Pentax fullframe DSLR will possibly demand other things from legacy lenses than when one uses them with fil...
Posted by bjolester on 01/09/2015 - 13:11
Finally Tamron produce some desirable lenses - not for Pentax though, of course
With Pentax no longer offering sensor stabilisation during video, you really need to look to a lens with stabilisation built in. There are few really, as manufacturers (quite rightly) assume that the stabilisation will be undertaken in body on Pentax cameras. = Frustrating...
Posted by richandfleur on 02/09/2015 - 23:27
Sigma EX DG 300mm F2.8 V Pentax DA 300mm F4
Have used the Sigma 300mm f2.8 since day one of it's release. Over that period of time and literally thousands of photographs I've never had one single issue with it. Also works well with the Pentax aw teleconverter. Although if you are looking into getting one brand new... Might want to consider...
Posted by Daronl on 13/09/2015 - 13:53
Full Frame Lenses
The only A/F lenses I have for FF are the F50 1.7 and the f35-70and possibly DA300f4 .But as manual focus is what I enjoy I would be well covered with the collection of A.M.K and my Takumars. But I cannot see me bothering with FF as I cannot see what it will give me over the crop sensor kit that I u...
Posted by geordie01 on 19/09/2015 - 08:53
Full Frame Lenses
But I cannot see me bothering with FF as I cannot see what it will give me over the crop sensor kit that I use now. I may in a few years time but at the moment I am happy with the K-5IIs. TBH I have never felt the need for full frame.but I can understand why some would.
Posted by Mike-P on 19/09/2015 - 11:26
Full Frame Lenses
But you photography a lot of things that are a long way away Mike, don't you. Now, If I remember rightly isn't a smaller sensor better for that .... ? :wink:
Posted by McGregNi on 19/09/2015 - 11:35
Full Frame Lenses
But you photography a lot of things that are a long way away Mike, don't you. Now, If I remember rightly isn't a smaller sensor better for that .... ? :wink: Indeed it is BUT a 36mp ff sensor in crop mode would crop to the approx equivalent of a 16mp sensor and would possibly be better quality as ...
Posted by Mike-P on 19/09/2015 - 18:26
Full Frame Lenses
But you photography a lot of things that are a long way away Mike, don't you. Now, If I remember rightly isn't a smaller sensor better for that .... ? :wink: Indeed it is BUT a 36mp ff sensor in crop mode would crop to the approx equivalent of a 16mp sensor and would possibly be better quality as ...
Posted by stu62 on 19/09/2015 - 20:37
Full Frame Lenses
I've got some old manual focus prime lenses ranging from 28mm to 135mm, but I think the auto-focus zoom lenses are all designed for APSC sensors, except perhaps my Tamron 70-300, but I may be wrong. So stuck with a wholly inadequate K5 with its antiquated sensor and awful image quality. Shucks. ...
Posted by bwlchmawr on 25/09/2015 - 07:52
