I come from the print media industry, but find moving pictures waaaay more fun to work on. I shoot/edit video & audio, do motion design and 3D.
I own the Pany 12-35/f2.8 and like it, BUT it is not true constant aperture, as it tends to shift exposure when zooming. The Pany 35-100/f2.8 is constant aperture.
Like others, I'm using the Sigma 18-35 and Tokina 11-16 with a SpeedBooster on my GH4, so this 50-100 Sigma would be a logical addition. I currently use the Pany 35-100, which I like very much as its fast enough for most shots, and the stabilization is decent. I want stabilization with any lens over 35mm for hand held shots, but for locked off shots the faster 50-100 would be really nice. If the image quality matches the 18-35, it will be hard to resist buying this.
This video really nails the explanation on every level. I knew most of this stuff, but it is still refreshing to see your video demonstrate the principals involved.
BTW, the Lens Tutorial iphone app is something I often use to demonstrate these issues for people who struggle with it.https://itunes.apple.com/us/app/lenstutorial/id500543869?mt=8
I just received a used DEC off ebay, and spent an hour with it on my Ronin gimbal and shoulder rig. The unit works fine with my Sigma 18-35mm and Tokina 11-16mm lenses; smooth focus pulls and repeatable A/B rack focusing. Being able to control focus, aperture and record from the remote grip is a godsend when using a gimbal.
A few drawbacks:
• The grip's rubber coating is slippery! Considering it was designed to be used with rigs, you would expect the grip to have a different surface coating. I hope to find something to wrap around the grip for better...uh, grip!
• The rosette mount on the grip handle is non-standard, so it can't properly mate with a standard rosette. This design oversight prevents me from attaching the grip directly to my shoulder rig's rosette connection.
• The current version's battery extends below the bottom of my GH4, making mounting difficult. The DEC includes a small spacer to help when mounting, but it doesn't offer enough surface area for solid support. Using the Ronin's lens support helped, but I need to find a better solution. The upcoming DEC version (April 2016 ETA) should eliminate this issue, as the battery will be on the side.
• Both of my lens' motor noise seems louder with the DEC than without it. Not sure why this is, and I hope it doesn't effect the lifespan of the lens' motors.
Overall, I really like this unit. I intended to wait for the next version, but found a great deal on a used on, so I took the plunge.
How many more months, Ted?
I think that's a fair assessment. I really enjoyed Tree of Life, and watched it many times, but To The Wonder just doesn't hold my interest. He demands a lot from his viewers, which very few film makers do. Malick obviously isn't trying to please everyone, so I applaud him for following his own vision.