Ian Campbell
March 22nd, 2009, 07:26 PM
Those who can take a few mins. to do a simple focus test with their Z7U, would be greatly appreciated.
I have been having ongoing problems with several Sony Z7U camcorders, and I'm at the end of my tether with Sony for a) the length of time trying to problem solve and b) not matching the camera and the lens acceptably. There are definate problems affecting many Z7U's with the stock lens with focus and back focus issues.
I am meeting with Sony next Wednesday about Z7U issues and would like to show them one problem that might be helpful in terms of probelm solving some focus issues.
If a couple of folks such as Greg Laves or other regurlar contributors could do the following - it would be helpful:
When doing the following, what distance reading (in feet on your Z7U LCD panel) do you get from an object approx. 20’ from camera? Use a measuring tape to get the true distance. And when focusing the camera, keep an eye on the distance display (LCD). Please let me know what discrepancy there is between the true distance (measured by tape to object), and what the camera reports in feet on the LCD. I used the front to the lens (not lens hood or where the sensor might be) as to where measurement was taken from.
Currently I have two Z7U's. What is a concern is that both cameras at 21’4” from object or chart (true distance, measured with measuring tape) is reported by one camera as being 24’ from camera (when in perfect focus, using monitor) – while the other reports being 25’ away. Being more than 2.5 feet and 3.5 feet off when doing mechanical measuring is a lot.
With other small and larger format cameras, I've been able to measure distance using a measuring tape and get great results. I can't with the Z7U, since the camera isn't able to handle accurate (or even closely accurate) measurements and get focus right.
If anyone wishes to PM me with any info. that would be great.
I'd love to hear from a few of you before meeting with Sony folks on Wednesday.
Thanks.
Ian
I have been having ongoing problems with several Sony Z7U camcorders, and I'm at the end of my tether with Sony for a) the length of time trying to problem solve and b) not matching the camera and the lens acceptably. There are definate problems affecting many Z7U's with the stock lens with focus and back focus issues.
I am meeting with Sony next Wednesday about Z7U issues and would like to show them one problem that might be helpful in terms of probelm solving some focus issues.
If a couple of folks such as Greg Laves or other regurlar contributors could do the following - it would be helpful:
When doing the following, what distance reading (in feet on your Z7U LCD panel) do you get from an object approx. 20’ from camera? Use a measuring tape to get the true distance. And when focusing the camera, keep an eye on the distance display (LCD). Please let me know what discrepancy there is between the true distance (measured by tape to object), and what the camera reports in feet on the LCD. I used the front to the lens (not lens hood or where the sensor might be) as to where measurement was taken from.
Currently I have two Z7U's. What is a concern is that both cameras at 21’4” from object or chart (true distance, measured with measuring tape) is reported by one camera as being 24’ from camera (when in perfect focus, using monitor) – while the other reports being 25’ away. Being more than 2.5 feet and 3.5 feet off when doing mechanical measuring is a lot.
With other small and larger format cameras, I've been able to measure distance using a measuring tape and get great results. I can't with the Z7U, since the camera isn't able to handle accurate (or even closely accurate) measurements and get focus right.
If anyone wishes to PM me with any info. that would be great.
I'd love to hear from a few of you before meeting with Sony folks on Wednesday.
Thanks.
Ian