Sony 32EX503 - motion artifact
 

Overall I'm delighted with my Sony 32EX503 with its HD, 100Hz,
ethernet and USB input.

My only criticism is (example):
Cricket (I only have Sky Sports in SD, via VM).
Batsman hits ball along ground for 4.
Camera follows the ball.
The ball looks fine, but the grass becomes a bit "clover" like.

Is it the TV or inherent in the transmission ?

Thanks.

Sony 32EX503 - motion artifact
 

On Fri, 30 Mar 2012 10:05:46 +0100, viewer said...
Overall I'm delighted with my Sony 32EX503 with its HD, 100Hz,
ethernet and USB input.

My only criticism is (example):
Cricket (I only have Sky Sports in SD, via VM).
Batsman hits ball along ground for 4.
Camera follows the ball.
The ball looks fine, but the grass becomes a bit "clover" like.

Is it the TV or inherent in the transmission ?

It is difficult to say for sure, as there are several factors involved,
but in my opinion it's probably the transmission.

As a test, try comparing the grass on a football pitch on BBC1 as the
camera pans (use an SD broadcast), which I think is broadcast at a
better quality than Sky. It should be better, though not perfect.

Also, what's the grass like on football on HD BBC1? It should be much
better. If it is, it's not your TV.

I should add that I don't have much experience of VM, I get my pictures
via Freeview. So take my views with the necessary pinch of salt and
apply them as you see fit.

--
Mark Myers
usenet at mcm2007 dot plus dot com

Sony 32EX503 - motion artifact
 

In message , Mark Myers
writes
On Fri, 30 Mar 2012 10:05:46 +0100, viewer said...
Overall I'm delighted with my Sony 32EX503 with its HD, 100Hz,
ethernet and USB input.

My only criticism is (example):
Cricket (I only have Sky Sports in SD, via VM).
Batsman hits ball along ground for 4.
Camera follows the ball.
The ball looks fine, but the grass becomes a bit "clover" like.

Is it the TV or inherent in the transmission ?

It is difficult to say for sure, as there are several factors involved,
but in my opinion it's probably the transmission.

As a test, try comparing the grass on a football pitch on BBC1 as the
camera pans (use an SD broadcast), which I think is broadcast at a
better quality than Sky. It should be better, though not perfect.

Also, what's the grass like on football on HD BBC1? It should be much
better. If it is, it's not your TV.

I should add that I don't have much experience of VM, I get my pictures
via Freeview. So take my views with the necessary pinch of salt and
apply them as you see fit.

Turning the grass of a football pitch into the baize of a billiard table
(when the camera pans) is a feature of MPEG transmissions.

In simplistic terms, one of the essentials of MPEG video compression is
that only the field-by-field differences in picture content need to be
transmitted. There is no need to keep repeatedly sending the parts of
the picture that do not move. The receiver knows which areas of the
picture to store for reuse, and which are being rapidly updated, and it
is normally able to re-assemble a pretty good representation of what the
camera sees.

If the system finds itself running out of steam, and it is being
required to convey too much information, one of the first things it does
is to reduce the amount of detail which is sent. As a result, when the
camera pans, you no longer can see the rapidly-moving individual blades
of grass, and you see only a fuzzy blur - like the surface of a billiard
table.
--
Ian

Sony 32EX503 - motion artifact
 

On 30/03/2012 13:33, Ian Jackson wrote:
In message , Mark Myers
writes
On Fri, 30 Mar 2012 10:05:46 +0100, viewer said...
Overall I'm delighted with my Sony 32EX503 with its HD, 100Hz,
ethernet and USB input.

My only criticism is (example):
Cricket (I only have Sky Sports in SD, via VM).
Batsman hits ball along ground for 4.
Camera follows the ball.
The ball looks fine, but the grass becomes a bit "clover" like.

Is it the TV or inherent in the transmission ?

It is difficult to say for sure, as there are several factors involved,
but in my opinion it's probably the transmission.

As a test, try comparing the grass on a football pitch on BBC1 as the
camera pans (use an SD broadcast), which I think is broadcast at a
better quality than Sky. It should be better, though not perfect.

Also, what's the grass like on football on HD BBC1? It should be much
better. If it is, it's not your TV.

I should add that I don't have much experience of VM, I get my pictures
via Freeview. So take my views with the necessary pinch of salt and
apply them as you see fit.

Turning the grass of a football pitch into the baize of a billiard table
(when the camera pans) is a feature of MPEG transmissions.

In simplistic terms, one of the essentials of MPEG video compression is
that only the field-by-field differences in picture content need to be
transmitted. There is no need to keep repeatedly sending the parts of
the picture that do not move. The receiver knows which areas of the
picture to store for reuse, and which are being rapidly updated, and it
is normally able to re-assemble a pretty good representation of what the
camera sees.

If the system finds itself running out of steam, and it is being
required to convey too much information, one of the first things it does
is to reduce the amount of detail which is sent. As a result, when the
camera pans, you no longer can see the rapidly-moving individual blades
of grass, and you see only a fuzzy blur - like the surface of a billiard
table.

The first thing to look at are the digital processing settings on the
TV. I have a Sony TV and even though it's only a 50Hz unit, with all the
fancy digital processing turned off the picture is spot on, with no
motion issues. Worth having a play around with.

Clem