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Hi, I used Beta 02h today for a bit of white light solar imaging with my D7100. All was fine imaging-wise but focusing was a major headache. In the end I resorted to using the camera's LCD screen instead. The problem was that (unless I've missed something ) there doesn't seem to be any means of altering the shutter or ISO in the actual live view (frame and focus or planetary). With stars this isn't an issue but with the Sun it makes it near-impossible (in my case anyway) to focus as you can't really see any detail such as sun spots. On the camera itself you have to switch to video mode for the shutter speed to affect the live view display but it does allow you to dial down the expose enough to be able to focus. However, as I've found out before, if the D7100's live view switch is left in video mode BYN shows completely blank (black) live view. I obviously turned off the 'Maximum Sensitivity' option. This allowed me to override the ISO and shutter but had no effect on the live view image. This is much the same as on the camera itself when LV is in 'camera' mode rather than 'video'. Also managed to completely lock up BYN a couple of times when changing the ISO with LV active (an API issue I suspect). On the subject of video, it would be nice if the BYN planetary capture could do more than 640x424 (unless I've missed another setting ). The D7100 itself captures video quite nicely at 1920x1080 giving loads of scope for cropping. What would be good for planetary would be to be able to capture a stream of frames with the mirror locked up perhaps cropped from the full 6000x4000 res - wishful thinking I suspect . Apart from these minor grumbles however it's an excellent product and i'm looking forward to purchasing the final version. Rich Bamford.