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Sony DSC HX80 Sensor



 
 
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  #11  
Old December 25th 18, 05:01 PM posted to rec.photo.digital
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Default Sony DSC HX80 Sensor

In article ,
wrote:

Just where in the specs does it say anything about the aspect ratio of
the sensor ?! Surely if it was rectangular, and it might well be, it
would give the aspect ratio. All it says is 1/2.3 ", which is a bit
less tham 1/2 " . If it was rectangular, then one dimension wouldn't
be enough to completely specify, further sugesting a square.


i explained that already.
  #13  
Old December 25th 18, 05:14 PM posted to rec.photo.digital
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Default Sony DSC HX80 Sensor


Just where in the specs does it say anything about the aspect ratio of
the sensor ?! Surely if it was rectangular, and it might well be, it
would give the aspect ratio. All it says is 1/2.3 ", which is a bit
less tham 1/2 " . If it was rectangular, then one dimension wouldn't
be enough to completely specify, further sugesting a square.


i explained that already.


You most certainly did not. All you said is that most uses are
rectangular and I agree and even listed them,
BUT the aspect ratio of each differs.

If the sensor is rectangular, then it's aspect ratio would have to be
16:9 to accomodate all the others and these would have to just be side
crops of the 16:9. I suspect this is not the case.
  #15  
Old December 25th 18, 05:27 PM posted to rec.photo.digital
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Default Sony DSC HX80 Sensor

In article ,
wrote:


Just where in the specs does it say anything about the aspect ratio of
the sensor ?! Surely if it was rectangular, and it might well be, it
would give the aspect ratio. All it says is 1/2.3 ", which is a bit
less tham 1/2 " . If it was rectangular, then one dimension wouldn't
be enough to completely specify, further sugesting a square.


i explained that already.


You most certainly did not.


i did. it's also basic math.

All you said is that most uses are
rectangular and I agree and even listed them,
BUT the aspect ratio of each differs.


yep.

If the sensor is rectangular, then it's aspect ratio would have to be
16:9 to accomodate all the others and these would have to just be side
crops of the 16:9. I suspect this is not the case.


nope. it's whatever the manufacturer wants it to be. most cameras are
4:3 or 3:2, but there can be others.
  #17  
Old December 25th 18, 05:41 PM posted to rec.photo.digital
Savageduck[_3_]
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Default Sony DSC HX80 Sensor

On Dec 25, 2018, wrote
(in ):

On Tue, 25 Dec 2018 08:15:14 -0800, Savageduck
wrote:

On Dec 25, 2018,
wrote
(in ):


Nowhere does it answer my questions ...

yes it does.

OK, very good info I somehow missed.

So, then 16:9 shots must crop the top and bottom, 3:2 crops the sides,
and 1 apears to crop both.

How does 1/2.3 figure in ?


Sensor sizes are expressed in inches notation because at the time of the
popularization of digital image sensors they were used to replace video
camera tubes. The common 1" circular video camera tubes have a rectangular
photo sensitive area about 16mm diagonal, so a digital sensor with a 16mm
diagonal size is a 1" video tube equivalent. The name of a 1" digital sensor
should more accurately be read as "one inch video camera tube equivalent"
sensor. Current digital image sensor size descriptors are the video camera
tube equivalency size, not the actual size of the sensor. For example, a 1"
sensor has a diagonal measurement of 16mm.

Sizes are often expressed as a fraction of an inch, with a one in the
numerator, and a decimal number in the denominator. For example, 1/2.5
converts to 2/5 as a simple fraction, or 0.4 as a decimal number. This "inch"
system brings a result approximately 1.5 times the length of the diagonal of
the sensor. This “optical format” measure goes back to the way image
sizes of video cameras used until the late 1980s were expressed, referring to
the outside diameter of the glass envelope of the video camera tube. The
actual sensor size is much smaller than the camera companies publish –
about one-third smaller." For example, a camera advertising a 1/2.7" sensor
does not have a sensor with a diagonal of 0.37"; instead, the diagonal is
closer to 0.26.

Your 1/ 2.3” sensor will have a diagonal measurement of approximately
7.66mm.

--
Regards,
Savageduck

  #18  
Old December 25th 18, 05:42 PM posted to rec.photo.digital
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Default Sony DSC HX80 Sensor

In article ,
wrote:


How does 1/2.3 figure in ?


it's an outdated method of measuring sensor sizes dating back to the
1950s and vidicon tubes.

https://www.dpreview.com/articles/8095816568/sensorsizes
  #19  
Old December 25th 18, 07:41 PM posted to rec.photo.digital
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Default Sony DSC HX80 Sensor

Great info. Many thanks !
  #20  
Old December 25th 18, 07:44 PM posted to rec.photo.digital
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Default Sony DSC HX80 Sensor

Great info. Many thanks
 




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