BMPCC with Canon Zoom Test

bmpcc with canon zoomBMPCC with Canon Zoom Test

On a quest to find inexpensive lenses with good quality and personal uniqueness, I came across a lens that I figured I would try. Now I have a BMPCC with Canon Zoom. The BMPCC with Canon Zoom is the 16-100mm zoom labeled V6x16 which is a 16 – 100mm TV zoom. When I received the used lens (purchased on eBay), I already had the Neewer thin C-mount to Micro Four Thirds adapter which I assembled to my new lens and attached it to my Pocket.

The lens was wide open and I began playing with it, zooming in to focus sharp on objects across the room and pulling out only to discover, that there is no provision for backfocusing this lens on the Pocket. The zooms that you see in the video are fine when pulling out because those shots are focused to infinity. I don’t really intend to use the zoom in real-time, but more as a convenience factor when framing a shot instead of always moving the camera. bmpcc with canon zoom

When my lens arrived, it came without the hood, but I was nevertheless happy to know that the weight of the lens was not so heavy that it would be awkward to use with so small a camera. My delight quickly changed to disappointment when trying to make an iris adjustment using the manual control that is characteristic of this lens. To adjust it, one pulls out the button and a gear engages with another gear that closes or opens the iris with a visual indicator on the lens that shows the F-stop. Mine didn’t work and apparently very few ever do. I did a Google search and discovered that many other people who purchased this lens met the same problem. One guy said he fixed his by removing the five screws that hold a plate to the back of the lens housing exposing the shaft with the gear and by placing epoxy on the gear and the shaft. In other words, just like mine, the shaft turned but the gear remained stationary.

Because I didn’t want to go shopping for epoxy and was eager to try to get this thing working, I went down to my trusty tool chest where I had a hot melt glue gun. I removed the five screws and back plate. After heating up the glue gun and making a blob of the hot glue, I used a toothpick to apply the glue to the back of the gear and to the shaft, being careful not to mistakenly get any glue on the teeth of the gears. Now it works just fine.

— Stu Brown



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