Wingpilot wrote:
Most likely you will have to do with a 1/2.3" sensor, and there may be some softness in the corners at both extreme ends of the zoom range. If the sensor is less than 20mp, such a camera will likely be a reasonable performer in low light situations, however it may struggle when it's dark. The other thing is that with a long zoom, such as 720mm, the auto focus mechanism may tend to hunt before locking in focus in some situations. I have a Panasonic Lumix FZ200. It's not a bad camera and takes decent images, however at the extreme end of the zoom, at 600mm, it has a hard time focusing on things like water scenes and small objects. It also has digital zoom, which is all but useless for focusing. It will focus, but it's difficult. On the upside, because it's just a 12.1mp sensor, it does fairly well in low light. I think the best bet is to pick a number of similar cameras, then check out sites for reviews, such as DPreview, Imaging Resource, Camera Labs, CNET, etc. They tend to give good reviews and will tell you all the positives and all the negatives, and if, in the end, a camera is worth considering.
Most likely you will have to do with a 1/2.3"... (
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Greg, have you divested of your photography equipment with sensors larger than 1/2.3", or do you still use those cameras for very large prints, above 16"x20"?
I'm kinda rebounding off of Paul's reply. You both seem to be accomplished outdoor photographers, and have (apparently) come to the conclusion that nothing [sensor] larger is really needed for that type of photography.