Fujinon Lens advice

nyczSZx

nyczSZx

Active member
Ok so I currently have a Fujinon AT2 A15xBEVM-28B lens which is great but I have a friend who is selling me his Fujinon A20x8.6BERM-SD lens for a great price. The question is.. which one is better? Should I keep the one I have? If so what makes it better than the Fujinon A20x8.6BERM-SD? Because the Fujinon A20x8.6BERM-SD is about $8,000 in B&H. Confused need a professionals opinion on this one. Thanks! :zombie_smiley:
 
They are both very similar lenses, both for 2/3" broadcast cameras, internal focus, the A20x8.6 has a little longer throw. By those codes they should both have extenders, and the A15x8 should have the variable mount grip. Are you looking to use the servo-grips?

By your Tester13 banner in your signature... Are you not shooting with an AF100/101, but with an ETC on a GH2? If so, are you shooting ETC for any particular reason other than to get full coverage from wide zooms?

The reason I ask is because 2/3" broadcast lenses will vignette heavily on m4/3 unless you're shooting ETC. But ETC is actually closer to 1/2". So your lens selection is sort of in between AF100 16:9 and GH2 ETC, not large enough to cover the full sensor, yet in ETC mode you're using only 75% of the sensor area for which the zoom was designed while cropping 25% of the wide perspective of the zoom.
 
The AT2 designation has some advantages according to Fujinon. Quoting Fujinon:

at2.gif

Many of Fujinon's HDTV and broadcast lenses feature Fujinon's AT2, which combines the company's exclusive Aspheric Technology with a new inner focusing system to greatly improve lens performance over conventional designs.A single aspheric element reduces distortion at wide angles, improves corner resolution, reduces glare and reflections, and allows chromatic aberration to be managed throughout the zoom range, rather than simply optimized at specific points.Aspheric elements gain their advantages from the way light passes through them. Light passing through the periphery of a spherical element falls on a different point on the focal plane than light passing through the center (spherical aberration). This requires additional elements to correct. Since light passing through aspheric elements focuses at the same point on the focal plane, additional elements are not needed. Lenses with aspheric elements eliminate the additional weight and space required by the corrective group of elements as well as their increased potential for distortion, ghosting, and flare.​
 
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