Search results for 'sensor cleaning' - page 443
FF & RF Best Aperture?
I think Jack that you have got it the wrong way round. Yes, you do have it the wrong way round Jack. To check focusing you use the largest aperture (aperture = size of the opening) which paradoxically equals the smallest f number. The larger aperture produces a shallower depth of field (DOF) m...
Posted by Mannesty on 06/02/2013 - 15:28
Pentax K5lls First Impressions
My replacement K5IIs is back from SRS now - very quick turnaround, much appreciated. I've just had a wander around Exeter Cathedral and the coast at Beer, Axmouth and Lyme, mix of indoor, overcast and sunny conditions. Early thoughts (I'm comparing with a K20D, so...) Much better low-light pe...
Posted by Smeggypants on 13/02/2013 - 15:37
Pentax K5lls First Impressions
It also works :) I'm a regular changer of lenses on shoots in the field and regurlarly had to clean the sensor on my K20D. Ihad my two K-5s for 2 years now and I've NEVER once had to clean the sensors. Highly impressed. The approaching ultrasonic method of cleaning is much better than the Low fr...
Posted by Stanovich on 13/02/2013 - 17:44
AFRAID TO SAY IT!
its probably the most important decision I will make and i just don't know what to do. I just wish the auto focus was quicker on the Siggy :-( Given the much improved low-light AF sensor on the K-5 II, perhaps it's worth giving that a go- can anyone comment on if the K-5 II improves focus speed for...
Posted by timothyw on 13/02/2013 - 10:01
Full Frame.
I'm not really sure what the fuss over FF is. As far as I can see if you're using FF lenses on APS-C sensors then you're using the best part of the lens. Start using the whole thing again and you end up showing up weaknesses in the lens in the corners etc. I know there are some advantages r...
Posted by simonkit on 18/02/2013 - 23:02
Full Frame.
I thought Pentax had been thinking about making a FF body for years .. I already have one, it's called an ME Super! :P Joking aside, it wouldn't surprise me if a FF Pentax came out before long, but at the moment it seems that all we are hearing is thinking and speculation. Logically though the...
Posted by Stanovich on 19/02/2013 - 11:10
Full Frame.
I thought Pentax had been thinking about making a FF body for years .. I already have one, it's called an ME Super! :P Joking aside, it wouldn't surprise me if a FF Pentax came out before long, but at the moment it seems that all we are hearing is thinking and speculation. Logically though the...
Posted by Smeggypants on 19/02/2013 - 17:04
Full Frame.
For landscape, I'd agree. When I first learned to use a film SLR the rule of thumb (assuming a 50mm lens) seemed to be f/16 or more to give a decent depth of field; in reality with ISO100 print film, or ISO25 or 64 for slides, that either meant a tripod or compromising with a wider aperture. W...
Posted by Stanovich on 20/02/2013 - 23:12
Full Frame.
Just stand closer to the subject. AFAIK the DOF for a given focal length, distance to subject and aperture setting is exactly the same on FF and APS-C. :) It is the pesky parameter which makes the difference between the apparent DOF on FF vs APS-C. This is is a measure of a 'largest blur spo...
Posted by kh1234567890 on 20/02/2013 - 23:58
Full Frame.
Just stand closer to the subject. AFAIK the DOF for a given focal length, distance to subject and aperture setting is exactly the same on FF and APS-C. :) It is the pesky parameter which makes the difference between the apparent DOF on FF vs APS-C. This is is a measure of a 'largest blur spo...
Posted by Smeggypants on 21/02/2013 - 03:36
Full Frame.
By the time Pentax launch their ff the d600 will most likely be down to around £1100ish how Pentax can compete against that I am not sure, but not only is price an issue so are features. That's assuming that they want to; there's a wide range of price-points in FF DSLRs just as there are with small...
Posted by Stanovich on 21/02/2013 - 23:27
Full Frame.
The thing about FF sensors is that they run counter to the advantages of chip (read sensor) fabrication. Most of the improvements in silicon manufacture have been related to making a smaller chip by packing it more tightly. This has various advantages, making smaller, faster, more reliable chips eas...
Posted by johnha on 22/02/2013 - 01:40
Full Frame.
In the end it all comes down to price and availabiliy, as johna said moores law comes ito play in that processor speed doubles every two years (18 months in reality) due to minitiarrisation and the number if transisitors you can fit on a chip. As we have seen 24 megapixel aps c sensors coming in to ...
Posted by cabstar on 23/02/2013 - 10:43
Full Frame.
My view is that FF sensors will drop in price, but the future is still with APSC and smaller. Larger sensors will remain a minority and specialist segment. Just think why large format cameras vanished (almost) - it wasn't because they became more expensive but because film quality improved and (...
Posted by gwing on 23/02/2013 - 14:00
Full Frame.
Well yes, I can hardly be expected to accept that the quality difference between the two formats is insignificant. I would suggest some caution might be in order though, particularly for those of us with mid range or older glass. I think a FF sensor will be particularly unforgiving of a lot of these...
Posted by McGregNi on 23/02/2013 - 21:50
Full Frame.
Well yes, I can hardly be expected to accept that the quality difference between the two formats is insignificant. I would suggest some caution might be in order though, particularly for those of us with mid range or older glass. I think a FF sensor will be particularly unforgiving of a lot of these...
Posted by Smeggypants on 23/02/2013 - 22:11
Full Frame.
Well yes, I can hardly be expected to accept that the quality difference between the two formats is insignificant. I would suggest some caution might be in order though, particularly for those of us with mid range or older glass. I think a FF sensor will be particularly unforgiving of a lot of these...
Posted by McGregNi on 26/02/2013 - 10:36
Full Frame.
So are my FA primes (28, 35, 50 & DFA100) going to be rubbish on full frame or not then... When used on my MZ-7 they don't appear to have much in the way of 'fall-off' but if a FF sensor is 'unforgiving' is this likely to be the case?
Posted by DaveHolmes on 27/02/2013 - 13:14
Full Frame.
That's true DrO, although the end result will be the amalgamation of lens and sensor, so the one may not gel with the other. I see this as a problem with lens testing these days. They have to be tested on something, but the camera used affects the outcome. It's a long way from the days when every...
Posted by johnriley on 27/02/2013 - 15:39
Full Frame.
According to KenRockwell.com we'll need a 175MP sensor to equal the resolution of film. Explanation of arriving at the figure here http://www.kenrockwell.com/tech/film-resolution.htm Yes DSLRs will have 175MP sensors, but not for a few years yet. :)
Posted by Smeggypants on 27/02/2013 - 20:36
