Search results for 'sensor cleaning' - page 150
When the FF Pentax comes out, what lenses can you use from day one?
Depending on the design, it could well be that any FF DSLR would automatically change to APS-C format (using only part of the sensor) when DA lenses are attached. It is conceivable this could apply to the viewfinder view as well. So discussions that rage about whether or not DA lenses are compati...
Posted by Don on 13/10/2012 - 13:43
When the FF Pentax comes out, what lenses can you use from day one?
Depending on the design, it could well be that any FF DSLR would automatically change to APS-C format (using only part of the sensor) when DA lenses are attached. It is conceivable this could apply to the viewfinder view as well. Yes, but what would be the point of owning FF sensor camera when usi...
Posted by kingfisher on 13/10/2012 - 17:50
When the FF Pentax comes out, what lenses can you use from day one?
Depending on the design, it could well be that any FF DSLR would automatically change to APS-C format (using only part of the sensor) when DA lenses are attached. It is conceivable this could apply to the viewfinder view as well. Yes, but what would be the point of owning FF sensor camera when usi...
Posted by johnriley on 13/10/2012 - 19:42
When the FF Pentax comes out, what lenses can you use from day one?
Just a thought. The current DA lenses need to cover an area than the APS-C sensor due to the Shake Reduction feature, which of course works by moving the sensor slightly relative to the body and lens. Thus they all cover a larger proportion of a 35mm film negative than one might otherwise imagine....
Posted by elfer on 17/11/2012 - 14:48
When the FF Pentax comes out, what lenses can you use from day one?
The current DA lenses need to cover an area than the APS-C sensor due to the Shake Reduction feature, which of course works by moving the sensor slightly relative to the body and lens. Thus they all cover a larger proportion of a 35mm film negative than one might otherwise imagine. Isn't it then th...
Posted by Pentaxophile on 17/11/2012 - 17:32
When the FF Pentax comes out, what lenses can you use from day one?
Isn't it then the sensor that needs to be slightly larger, because it's the bit which moves? Either way would have worked. My understanding though is that Pentax opted for standard APS-C sized sensors and lenses with over-sized coverage. (Probably because it would cost more and waste pixels the ot...
Posted by elfer on 17/11/2012 - 19:14
When the FF Pentax comes out, what lenses can you use from day one?
Actually, having thought about it, haven't a larger sensor wouldn't work. As it moved, each pixel would be seeing different parts of the image from before. The lens coverage area has to be the one which is larger. When the camera shakes, the sensor moves within the expanded coverage area such t...
Posted by elfer on 17/11/2012 - 19:25
When the FF Pentax comes out, what lenses can you use from day one?
:oops: another typo in the first line. When reading, please replace "..., haven't a large sensor..." with ".., having a large sensor...". Meanwhile, I'll be writing out "I must proof-read my posts first" 100 times...
Posted by elfer on 17/11/2012 - 20:01
Overwhelmed by choices....
Join the club. I've been trying to make a similar decision and for the all my trips in the last 2 years....Whatever you choose, you will wish you had done differently so go with the best choice at the time. If you buy good used you will rarely ever make a loss on re-sale if (when) you change your...
Posted by milamber on 22/10/2012 - 15:21
Poll: AF Accuracy Adjustments
I had problems with lenses on my K10D (thanks to Smeggypants and Anvh) I was able to effect an improvement. Not noticed a problem with the K5, so I've not checked it. I am somewhat bemused by the 'fact' that different lenses need different adjustments. Surely the image falling on the sensor sh...
Posted by Frogherder on 23/10/2012 - 23:05
Poll: AF Accuracy Adjustments
I had problems with lenses on my K10D (thanks to Smeggypants and Anvh) I was able to effect an improvement. Not noticed a problem with the K5, so I've not checked it. I am somewhat bemused by the 'fact' that different lenses need different adjustments. Surely the image falling on the sensor sh...
Posted by Smeggypants on 24/10/2012 - 00:31
Poll: AF Accuracy Adjustments
I had problems with lenses on my K10D (thanks to Smeggypants and Anvh) I was able to effect an improvement. Not noticed a problem with the K5, so I've not checked it. I am somewhat bemused by the 'fact' that different lenses need different adjustments. Surely the image falling on the sensor sh...
Posted by carmagw on 24/10/2012 - 08:57
Poll: AF Accuracy Adjustments
Is it that the debug/menu adjustments have the same effect as positioning a shim between camera mount and lens to compensate for manufacturing tolerances? Something like that, except you can add a negative thickness shim using the in-camera adjustment, which would of course be impossible in real li...
Posted by Smeggypants on 05/11/2012 - 20:57
K5 IIs Dream Glass Garage
I don't think resolution will be so high as to make any particular lenses redundant. But just as the 18-55mm was upgraded to meet the requirements of new sensors, we will reach that point I think quite soon. You can compare the K-5/K-5II with the K-5IIs here. There isn't a lot of difference,...
Posted by Smeggypants on 26/10/2012 - 23:09
Landscape Newbie
I don't like an ultra wide angle for landscapes. Rather than giving you a sweeping landscape view it gives you a squashed up view. UWAs have their place yes, but for landscapes it is better to not go so wide, and if you really want a sweeping view then take two or three photos and make a panorama fr...
Posted by bwlchmawr on 07/11/2012 - 20:18
Landscape Newbie
One point of interest - I bought secondhand an old Pentax book from the early 80's, sort of a Pentax-centric guide to photography, the LX was one of the cameras detailed. In the lens section it clearly warned against allowing rain onto a front element and also not to put any drops of cleaning fluid ...
Posted by McGregNi on 11/11/2012 - 15:39
Landscape Newbie
WR lenses are weather esistant, so away we go in the rain. Some lenses have SP coating as well, which repels water and is even better in the rain. As regards clewaning, as little as possible is best. A microfibre cloth will do the job and lens cleaning fluid is rarely needed. When it is used, it ...
Posted by johnriley on 11/11/2012 - 16:17
SMC Pentax-M 1:3.5 135mm with fungus
I've not taken one of these apart but usually the front elements are easy to get to. Most lenses use the name ring, the part with the lens type, serial number and Asahi Opt. Co on it, to hold the front element in. The name ring uses the same threads as the filter. I'm not sure, but there may be a...
Posted by doingthebobs on 11/11/2012 - 23:16
Ok folks lets talk Filters...
My take on this, also speaking from past experience, is go straight for the best which IMHO is LEE..I initially bought Cokin, then Hitech and should really have just gone with Lee from day one. The hard/soft grad decision can be a little confusing but with crop sensor DSLRs the graduation line on...
Posted by simonkit on 12/11/2012 - 19:39
what to buy in the 18-250 range?
I had an 18-250mm for about a year as a travel lens and loved it. It's only as my interests have developed that I sold it and bought a wider zoom and a couple of primes and I'm not entirely sure still that it was the right decision. I certainly didn't ever have any sensor dirt problems whilst that w...
Posted by milamber on 15/11/2012 - 20:13
