Search results for 'sensor cleaning' - page 126
Which lens(es)
You might consider the lens. It's said to be very good. It is not as fast as the SMCP-FA f2 version but this sells for £149.00 in UK, about AU$240 and well within your budget. As George noted above, the low light performance of the sensor in the K5 will more than compensate for the slightly slo...
Posted by Mannesty on 16/11/2010 - 15:16
Think I may invest in some M series lenses.....
I find 28 to be a wierd length. I can understand its use in video completely, but I have a hard time seeing it in my mind's eye in stills. 24 is great because of the "both eyes" view. I don't see the point in chopping this and found 28 restrictive at times on a zoom, which is why I went 24-70. OT...
Posted by bretti_kivi on 20/11/2010 - 22:18
How do I know whan a Lens is a macro lens
A macro lens is (theoretically) a lens that (at least) allows you to get a real size image of an object on the sensor. So a subject of 1 cm diameter will be 1 cm on the sensor (or bigger) Others state that macro already starts earlier (e.g. 50%). If a zoom says macro, it's often not able to...
Posted by sterretje on 21/11/2010 - 10:39
Pentax DFA 100mm f2.8 macro half price
Hi Thanks for that, there may be nothing wrong with the lens. It seems to focus alright just a bit noisy and hunts a little as they say. Rather long on an APC sensor so not such a good walk round lens as the DA35 macro would be. Depending on what you like to do I suppose. But the DA35 would cos...
Posted by lukedh on 23/11/2010 - 22:04
Time to start collecting...
I'm going to be the odd one out here, but I've never really seen the appeal of a 50mm lens on APS-C sensor digital. They do have uses for extremely low light levels, but I just find the field of view too narrow for my uses. If you want what I consider the ultimate landscape lens then look for the...
Posted by Dangermouse on 24/11/2010 - 15:53
Time to start collecting...
I'm going to be the odd one out here, but I've never really seen the appeal of a 50mm lens on APS-C sensor digital. They do have uses for extremely low light levels, but I just find the field of view too narrow for my uses. I guess I will have an opinion on that when I have had the camera for a ...
Posted by mmacleod on 24/11/2010 - 21:16
Time to start collecting...
I'm going to be the odd one out here, but I've never really seen the appeal of a 50mm lens on APS-C sensor digital. They do have uses for extremely low light levels, but I just find the field of view too narrow for my uses. I guess I will have an opinion on that when I have had the camera for a ...
Posted by Dangermouse on 24/11/2010 - 23:13
Macro 100mm f2.8 WR
Got this from elsewhere on here... "The focusing distance is the shortest distance where you can focus: but this is not the actual distance between you and the subject, it is just the distance between the focus plane (the sensor) and the subject. In macro photography, it is very important to k...
Posted by Robin128 on 27/11/2010 - 12:31
Macro 100mm f2.8 WR
Minimum focus distance 30.3 cm. Working distance 13 cm. Minimum focus distance is measured from the sensor and Working distance from the front element i believe or maybe from the front part of the lens? I use a polarising filter, certainly with plants you make the colours look more brilliant. ...
Posted by Anvh on 27/11/2010 - 12:44
some advice required
ok here goes I'm going to buy the 50-135mm f2.8 before Christmas and in the new year a new K-5. would you sell the 70-200mm tamron or keep it. I do have 2 K20's and the K100 witch I'm going to keep. James what is this about a mark on the sensor??
Posted by pink on 06/12/2010 - 10:02
New Cheap(ish) lenses
Now we have the 35mm F2.4 which is getting good reviews (not least from me), what other cheap(ish) lenses would we like to see from Pentax? I will start 28mm F2-2.4. Yes I know it will be more expensive to produce a 28mm that is faster than F2.8, however as it is the EFOV of 42mm, it is a close ...
Posted by Offertonhatter on 11/12/2010 - 21:49
31 mm ltd
The 31mm gets very close to an equivalent std focal length on a cropped sensor. Maybe pentax new that? Maybe they wanted a 70' FOV on a 35mm format? Best regards
Posted by K10D on 15/12/2010 - 23:21
31 mm ltd
The 31mm gets very close to an equivalent std focal length on a cropped sensor. Maybe pentax new that? Maybe they wanted a 70' FOV on a 35mm format? Best regards Was that new or knew Gary? Must learn grammar!
Posted by K10D on 16/12/2010 - 00:39
31 mm ltd
You may have a point there mph. However the 43mm is as close as you can get for 35mm or FullFrame these days. The 31mm is in reality too long to be a true "naked eye" lens on a cropped sensor, the closest to true is the 28mm,(science bit - the hypotenuse is just over 28mm on APS-C and just un...
Posted by Offertonhatter on 18/12/2010 - 22:30
31 mm ltd
The 31mm is in reality too long to be a true "naked eye" lens on a cropped sensor, the closest to true is the 28mm,(science bit - the hypotenuse is just over 28mm on APS-C and just under 43mm on FF) but Pentax have never had a fast 28mm, so the 31mm is the closest we can get. I wouldn't say it's t...
Posted by axl on 20/12/2010 - 13:47
Macro lens- a few beginner questions
Please note that when manufacturers talk about min focus distances (MFD) then they mean from the sensor to the subject and NOT from the end of the lense to the subject .... depending on the circumstance then this can mean taking up to 3" (7.6 cms ) or so off of the MFD. Generally a 90 or 100/105 ...
Posted by Frogfish on 16/12/2010 - 12:58
SMC Pentax-M Macro 1:4 100mm Lens
Mike P - didn't know that and thanks for the info - sounds like quite a useful combination both in terms of impact on focal length and close up ability. Hmmmm........... John R - will do, except that I like the lens just enough to not be able to push the button to advertise it yet! My logic is ...
Posted by JonSchick on 20/12/2010 - 10:39
Soligor 1:2.8 135mm
You'd need to remove all the glass.. Front and back, so that you can give the aperture blades a good soaking with lighter fluid. The good thing is that 135mm lenses are usually only four element designs and come apart quite easily. There will probably be two large elements in front of the iris and t...
Posted by mowog on 23/12/2010 - 00:44
lenses confused
Here is a full terminology of all Pentax lenses exempt the M42 as this is a screw lens and as such needs an PK adapter. Everything else is explained. I can not remember where I found this but I copied and pasted this from a website and I go by it all the time. It is very handy to have. My thanks ...
Posted by SmutjeUK on 23/12/2010 - 13:50
macro lens for k5
Are Mifsuds o.k I bought my DA* 55mm f1.4 * DA* 60-250mm from them .. excellent prices and good service. I bought my K-5 from them ... quite bad marks on the sensor. Let's just say I am not that impressed with their handling of the situation so far.
Posted by Mike-P on 01/01/2011 - 21:07
