5x and reduction in frames per second

[AVHill]

First, I love your software and appreciate the diligence you have in addressing questions here and elsewhere.  Onto my question...I am using a Nikon 7000 and when I capture Live View then the frame rate is ~22 FPS.  When I switch over to the 5X mode for Live View, then the frame rate drops down to 10 FPS.  Is this an expected outcome or are there settings on the camera that I have wrong?  

Thanks for any input you can provide,

AV Hill

[astroman133]

The frame rate is always "as fast as possible". BYN takes each frame as soon as the camera signals that it is available. So the rate is determined by the camera, the USB cable, and the PC. There is no way for BYN control it (to either speed it up or slow it down).

I am not a Nikon owner, so I only have hands-on experience with Canon cameras. However, it has been reported in other posts in the BYN Forum that 5X zoom on Nikon's does not work the same as it does on Canon EOS cameras. With my camera I get a steady 14-15 fps regardless to the zoom factor. Also, with my camera the 5X zoom has a 1-to-1 ratio of sensor pixel to image pixel. This allows Canon 5X zoom to provide the image at the maximum resolution of the camera. From what I understand, Nikon does not.

[admin]

I have no control over frame rate, I grab every frame provided by the camera in a high priority thread and calculate FPS.  Oddly enough sometime there is more overhead when in 5x than regular size.

[AVHill]

Thanks for the feedback.  Yes, based on everything I have read here and elsewhere, I understand that BYN is not the bottleneck.  It just seemed odd that capturing a smaller packet of information (640x480) at 5X reduces FPS.  

I love the software and the ease of using it.  

AV Hill