06-09-2010, 12:44 PM
[quote name='Brightcolours' date='09 June 2010 - 01:09 PM' timestamp='1276085364' post='384']
There are of course sports photographers that do not do the machine gun fire in the hope to by accident catch a good image. A bigger problem for sports may be the speed of its AF.
I see a bigger problem for the in the article mentioned intended target photographer: the amateur/ semi pro landscape photographer.
While the camera is based on medium format 60 x 45mm, and as a result will have access to lenses with focal lengths suited to and designed for 6x4.5cm format, the sensor is actually a 44 x 33mm affair.
That makes it a 1.36x crop factor camera... What makes the Canon EOS 1D a great sports and photo journalist camera, and not the most obvious landscape photo tool, will go for the 645D too.
[/quote]
I don't think the auto focus speed will be a problem. I did sports and fast action just fine with the Pentax K10D and I'm doing it now with the Penta K-x, and the 645D has a newer more advanced auto focus system with the same number of focus points as the previous system Pentax used.
The sensor is much larger than the 1D sensors (APS-H, 28.7mm*19mm). The 645D crop factor is 0.78, not 1.36. Its diagonal is 55mm vs. the APS-H's diagonal is 34.4mm, so the crop factor is 1.26 (if the sensor is exactly 28.7mm*19mm).
Unless I've misunderstood something very much.
There are of course sports photographers that do not do the machine gun fire in the hope to by accident catch a good image. A bigger problem for sports may be the speed of its AF.
I see a bigger problem for the in the article mentioned intended target photographer: the amateur/ semi pro landscape photographer.
While the camera is based on medium format 60 x 45mm, and as a result will have access to lenses with focal lengths suited to and designed for 6x4.5cm format, the sensor is actually a 44 x 33mm affair.
That makes it a 1.36x crop factor camera... What makes the Canon EOS 1D a great sports and photo journalist camera, and not the most obvious landscape photo tool, will go for the 645D too.
[/quote]
I don't think the auto focus speed will be a problem. I did sports and fast action just fine with the Pentax K10D and I'm doing it now with the Penta K-x, and the 645D has a newer more advanced auto focus system with the same number of focus points as the previous system Pentax used.
The sensor is much larger than the 1D sensors (APS-H, 28.7mm*19mm). The 645D crop factor is 0.78, not 1.36. Its diagonal is 55mm vs. the APS-H's diagonal is 34.4mm, so the crop factor is 1.26 (if the sensor is exactly 28.7mm*19mm).
Unless I've misunderstood something very much.