Erik Magnuson: BTW, OVF phase detect autofocus *can be* as accurate as CDAF - but it takes improvements to BOTH the lens mechanics AND the camera sensor/algorithms. See the charts from http://www.lensrentals.com/blog/2012/07/autofocus-reality-part-ii-1-vs-2-and-old-vs-new where the 5DIII with the new 24mm f/2.8 IS has the *same accuracy/consistency in either mode*. Yet the old 24mm f/2.8 lens on the 5DIII does not. Neither does the new lens on the 5DII. The entire "Autofocus reality" series is worth a read.
Agree, the lens rentals test indicate that 5DIII has better accuracy than other Canon bodies, except for the 1DX. It would be interesting to see comparisions with the 5DIII in addtion to the 70Dvs70D test.
mpgxsvcd: My telescope is only an 800mm lens! Why in the world would an entry level user ever need a 1200mm equivalent camera? They can't possibly hand hold it at that focal length.
At least Panasonic is pushing the limits of reason in a good way. 20mm @ F2.8 is much better than all of the other super zooms.
I just wish they would make a simple 8 megapixel 20-400mm F2.0-F4.0 small sensor fixed lens camera. Give it the true 1080p @ 60 FPS video from the FZ200 and make sure it has RAW. That is a camera that would take great still images and videos.
Eentry level users don't mean that they can't have special interests that require long tele. The Canon SX50 HS (and models from Sony and Fuji) already have 1200mm equivalent. I've used the Canon and it wasn't particulary difficult to handhold at full tele outside during the day.
J C Brown: I was very surprised when I came across Jeff Keller’s description the Extra Optical Zoom feature in the DC Resource review of the ZS15 and even more surprised to find an almost identical description in the DPR review of the ZS20 in which he wrote "....so you'd top out at a whopping 67.5X if you used both at the 5MP resolution; don't forget your tripod!”
When statements such as these appear in "official reviews", it is hardly surprising that there is confusion about the true nature of Extra Optical Zoom.
As can be easily demonstrated, the use of EZ does not increase the need to use a tripod to prevent blurring due to camera shake.
With a camera set for a full frame image at maximum zoom find the lowest shutter speed at which the camera shake warning is not displayed then select a much smaller EZ image. As that does not cause the camera shake warning to appear it is obvious that the focal length is unchanged and the use of EZ has not increased the need to use a tripod.
J C Brown
The focal length is not changed, but the area of the sensor that is used for the final picture is. So given a fixed output size then you'll need a bigger enlargement using EZ-zoom and sharpness is more critical.
If you compare with a crop similar to using the EZ-zoom then there's no difference, but given that both images are used "uncropped" (I know EZ-zoom is cropping) then you actually need faster shutterspeeds (or a tripod) using EZ-zoom.