Search results for 'sensor cleaning' - page 493
Exact crop factor of K3 Sensor.
I'm totally anal! Lucky for you so are Pentax I was disappointed that the local hospital uses Olympus lenses. I was given some really clear snaps of my innards but can't show them on here :(
Posted by tyronet2000 on 14/02/2014 - 11:30
Exact crop factor of K3 Sensor.
The Ricoh/Pentax values of 23.5mm x 15.6mm might well be correct for describing the actual image capture area, if they have been rounded to one decimal place. Working to 3 decimal places for a hypothetical example, if the dimensions were 23.485mm x 15.615mm, the ratio would be very close to 1.50...
Posted by MrB on 14/02/2014 - 12:20
Exact crop factor of K3 Sensor.
One way to settle this ... if someone can send me teh sensor from a K3 I will get it measured to within 0.1µm (micrometer)- 100nm or 0.0001mm.
Posted by Gamka on 14/02/2014 - 12:27
Exact crop factor of K3 Sensor.
... if someone can send me the sensor from a K3 ... Would anyone want to crop the sensor from their camera? :D Philip
Posted by MrB on 14/02/2014 - 12:36
Exact crop factor of K3 Sensor.
Ok 1.53 it is...:D
Posted by jules on 14/02/2014 - 12:45
Exact crop factor of K3 Sensor.
A Pentax MX is 24mm x 35.9mm A (cardboard) Kodachrome slide is 23mm x 34mm So 24x36 is non-existant anyway. --
Posted by Algernon on 14/02/2014 - 13:31
Exact crop factor of K3 Sensor.
Algi, whatever are you talking about? A Pentax MX is a 35mm film camera with a nominal format of 24x36mm. A Kodachrome slide will no doubt be slightly copped by the mount, but not to 23x24mm!
Posted by johnriley on 14/02/2014 - 13:33
Exact crop factor of K3 Sensor.
Ah, I see you caught up with it!
Posted by johnriley on 14/02/2014 - 13:35
Exact crop factor of K3 Sensor.
We're assuming perfectly square pixels and even spacing between them horizontally and vertically? Assuming things doesn't sit right with me when we're into a few decimal places accuracy. In the real world i.e. taking an actual photo, the aspect ratio will be affected by lens distortion anyway.
Posted by sbrads on 14/02/2014 - 14:19
Exact crop factor of K3 Sensor.
We're assuming perfectly square pixels and even spacing between them horizontally and vertically? Assuming things doesn't sit right with me when we're into a few decimal places accuracy. In the real world i.e. taking an actual photo, the aspect ratio will be affected by lens distortion anyway. It'...
Posted by Smeggypants on 14/02/2014 - 14:40
Exact crop factor of K3 Sensor.
1.5219445275
Posted by grahamcoad on 22/02/2014 - 17:29
Exact crop factor of K3 Sensor.
If you take a photo with a 1 to 1 ratio lens like the Pentax 100mm f/2.8 WR D FA smc Macro Lens and put a mm ruler on a table going up and down and left to right you can see exactly what the dimensions are .
Posted by pentaxk3user on 24/10/2019 - 03:40
Pentax 54MP FF DSLR
Pentax 54MP FF DSLR not such an impossibility. A strong rumour is that Sony are working on a 54MP full Frame sensor. By the time Pentax release a FF DSLR it may well could feature a 54MP sensor. Personally I think the MP race from a photographic POV is insane, I would much rather ( ex...
Posted by Smeggypants on 07/02/2014 - 04:37
Pentax 54MP FF DSLR
A FF 54MP sensor arriving to make sure the new 645D is quickly out-classed in resolution :wink:
Posted by Jonathan-Mac on 08/02/2014 - 21:26
Pentax 54MP FF DSLR
A 54MP FF sensor would have about the same pixel density as the 24MP APS-C sensor in the K3, so I see no reason why it couldn't be made with current technology.
Posted by Jonathan-Mac on 09/02/2014 - 08:58
Pentax 54MP FF DSLR
Random thoughts time: In the 'old days' of 35mm film, was there ever any in body image stabilisation? Just wondering, as suspending a sensor obviously ups the size all around it, as it's now wider than just the sensor on it's own. Are any brands doing in body stabilisation of a full frame sen...
Posted by richandfleur on 09/02/2014 - 09:29
Pentax 54MP FF DSLR
Are any brands doing in body stabilisation of a full frame sensor? If this was bought to market, surely that would be a major first? Yes, Sony. Beginning way back in 2008 with the A900 then the A850 and presently the A99. Best regards
Posted by K10D on 09/02/2014 - 09:48
Pentax 54MP FF DSLR
It maybe too much too soon. 54MP? Noise? Dynamic range? Many years ago it was said that a decent roll of film and a good lens would produce an image that gave around 50MP of detail if it was a digital sensor. Now the technology has advanced so much, a 16MP sensor problably is around what you would...
Posted by Offertonhatter on 09/02/2014 - 19:01
Pentax 54MP FF DSLR
A 54MP FF sensor would have about the same pixel density as the 24MP APS-C sensor in the K3, so I see no reason why it couldn't be made with current technology. Smegs will still be moaning about high-ISO performance though :)
Posted by ChrisA on 09/02/2014 - 19:14
Pentax 54MP FF DSLR
A 54MP FF sensor would have about the same pixel density as the 24MP APS-C sensor in the K3, so I see no reason why it couldn't be made with current technology. Indeed, but progressions in IQ are suffering becuase of the MP race. the Nikon D4 sensor which is 16MP hasn't got a great IQ reputation f...
Posted by Smeggypants on 09/02/2014 - 19:19
