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Category: FocusPulling Original

02 July 2017

KPS GimBall Head & Mirrorless Tripod Systems: A Guide

Written by Paul Moon

It’s a well-traveled theme that the worlds of still photography, and filmmaking/videography, are converging. Another way to say this is: the same cameras that snap still pictures are also shooting cinematic videos, and professionals who used to do just one thing, are expected to do both. And something else: cameras keep getting smaller — just one effect of becoming a “mirrorless camera.” That means there’s no optical prism at the top of the body, to bend light through-the-lens, for delivery to an optical viewfinder. We’ve gone all-digital, and smaller, and there’s no turning back.  Even for my highest-quality video work, I still find myself stuck in the miniature mirrorless world (something I complained about recently), since the relatively tiny Sony a7S II remains the only attainable and credible full-frame video image capture device.

This article is the result of thinking hard about how our traditional way to keep shots steady — using a tripod (“sticks”) and an attached video head — has been slow to keep up with these new realities, especially with so much of the load being carried by ubiquitous ultra-portable 3-axis gimbal stabilizers.  So I’ve spent a lot of time evaluating gear, and shooting numerous pictures here, to draw some conclusions.  Hope they’re helpful.

IDENTIFYING THE PROBLEM

Good video tripod systems have always been oriented “long-wise” because camcorders are longer than they are wide.  Of course, the so-called “digital SLR” is just the opposite:  wider than long (and much smaller).  Everything starts from what you screw into your camera, and since we all go back-and-forth between staying locked down on sticks, and moving around (or packing up), the “quick-release” plate is everything.  For video, there’s a leader in the field:  Manfrotto’s 501 and 701 standard.  As seen here, clearly it’s designed for that old paradigm of longer-than-wide camcorders, and when you screw it into a typical digital camera, it’s doing everything wrong.  It’s hanging out the back and it’s bumping up against the lens out front.  That front overhang often interferes badly with the ability to make manual lens adjustments (iris, focus) and sometimes even totally prevents the attachment of any lens with a large diameter.  There’s got to be a better way.

Arca Swiss has managed to become a better-suited runner-up, but it’s still just a little too big, less firm — and there are too many off-spec variants to make it ideal and reliable.  That’s why I found the below surprise from the photography world to be so promising:  here’s a picture of a plate that really does fit within the dimensions of a mirrorless camera’s underbelly.

KPS GIMBALL HEAD

KPS makes ball heads that mostly service the needs of high-end still photographers, who want durability and precision, while adding a “GimBall” feature that’s easily confused with “Steadicam” gimbal stabilizers.  This use of the term gimbal refers to the multi-axis ability to freely orient a camera on a heavy-duty ball with adjustable, smooth tension, while also being able to lock down an axis so that the motion only happens along one axis.

To accomplish this, there are pins removable from in-housing storage as seen in the pictures below which insert through the ball, along an axis, and into the other side of the housing, thumb-screwed in.  Although it’s not physically a true fluid head, for video movement it’s surprisingly smooth — and despite being a ball head, it becomes a way to simulate a typical video tripod head that lets you tilt up-and-down without losing your level horizon, while also giving you a reasonably fluid left-and-right panning capability (note the measurements at the base of the head, and the smaller knob that controls tension).  This is something that a typical photography ball head can’t do.

GimBall pin stored inside top platform
GimBall pin inserted and locking up-down axis
Smooth left-right panning from base

And while it qualifies as a competent smooth video head (and even has available an optional video panning extension arm), the big appeal to me is that tiny mounting plate, which keeps a small profile suited for my mirrorless cameras like the a7S II and GH4.  Size isn’t everything when it comes to strength:  as seen in the further pictures below, its grip from both sides is extremely solid, as its clever design pinches using the very solid large lever you see, with a half-twist pin that locks the “vice grip” into position.  You can also see that the grip tension is fully adjustable, while I found that it thankfully didn’t drift over time and the strength stayed calibrated.

Firm pinch from both sides
Adjustable grip tension
Set pin locks the tension arm into position
Here’s the locked-down state
For still photography, vertical/portrait orientation

In this last set of pictures, you can see how there are handy bubble levels for X- and Y-axis precision.  Having them next to each other, located central to the mounting point itself, is an essential tool that surprisingly doesn’t show up on most tripod heads, even though it becomes critically important as soon as you start panning around, trying to keep your horizon level.  This also becomes important for video moves beyond a typical static set of tripod sticks, where tripod heads are lately also used for other kinds of stabilizers like sliders and jibs.  It’s far from ideal to put a typical (and large) video tripod head onto a slider — or onto a Glidearm as pictured here, which is the next evolution in slider technology (my review coming soon) — and although the KPS isn’t the lightest and smallest you can mount, it strikes a right balance, and importantly doesn’t have a big affixed extension arm sticking out, getting in the way of moves and throwing-off balance.

Bubble levels in the locked-down position
Close-up of bubble levels
Additional uses on sliders and jibs

As a specialty item, the KPS GimBall heads aren’t cheap — this version, the G5, costs $300 — but like home audio speakers, a solid bicycle, and stuff like that, this is not a technology that changes every week, so investing in a good solution that lasts many years is part of the long game.  KPS products are sold exclusively in the United States through LegioPhoto.com, a veteran-owned family business with great customer service.

BUT THERE’S ALWAYS MANFROTTO

The goal is to keep everything as portable as possible, staying true to the nature of mirrorless cameras (and hoping to be able to throw everything into a single backpack).  The evolution of ball heads for video use, like the KPS GimBalls, has become a new favorite, but there are still applications where I need a video-purposed tripod system, with interchangeability of those misshaped universal Manfrotto plates, and traditional panning/tilting capability with a long extension arms to make the smoothest moves.  In that case, it’s come down to two options for me.

Above, Manfrotto MVH500AH head & Vanguard tripod; below, Manfrotto BeFree Live Kit

What I’ve been using for years still holds the crown:  Manfrotto’s reigning best video head is by far is their MVH500AH, pictured up top attached to a four-segment carbon fiber tripod (that Vanguard sadly stopped making and never replaced).  The whole thing just barely fits inside a photography backpack, without having to be strapped onto the outside like anything else on the market, yet it behaves like a truly high-end professional tripod system.  I also really love its innovative quick-release solution of flipping a latch, as pictured below, to tilt in and lock down the plate.  Strangely, Manfrotto stopped including that feature on newer models, but it’s a huge time-saver (and avoids the curse of protrusions getting in the way of slide-in-plate heads).  Three further pictures below show how my a7S II is a good match for the Manfrotto, and can slide forward and backward to adjust the center of gravity — with a long lens, that’s admittedly something a ball head can’t do.

But what about that other tripod seen above, just a little smaller than the Vanguard/Manfrotto combo?  That’s Manfrotto’s newest “travel” tripod, in their BeFree product line (that never used to contend with serious work).  This new BeFree Live Fluid Video Kit comes closest to balancing all these compromises.  It’s got aluminum legs that are less rigid, and heavier, than carbon fiber sticks, but it incorporates the very rare feature of a different kind of “ball head,” seen at left, which is really just a way to slightly adjust the plane of the platform for the principal screw-in head.  This is a common feature on gigantically heavy and high-priced tripods (e.g., Sachtler’s bowls), and avoids the awful practice of having to repeatedly adjust the length of each tripod leg until you think you’ve got it level on the horizon.

Speaking of legs, my one big complaint about the BeFree Live is the way that its protracted legs — normally folded up against the head — get locked into position after folding out below.  Those gray twist-knobs you see at right are cheap-plastic, light-feeling and very loose:  they are meant to solidly put the legs into three states — protracted up into storage, normally spread out below, or widely spread out below for low shots.  In each position, the knobs struggle to find their respective notches, and the way that they’re molded for human hands is even worse than primitive screw wingnuts from a hardware store — hard to grip and keep a hold on.  What were they thinking?

As for the head, as seen below it uses the standard 501/701 Manfrotto plate, which looks comically outsized on such a petite product, but it holds tight.  The fluid action is mediocre, but an adequate trade-off for its size.  Ultimately it performs poorer than my above preferred kit that’s only a little bigger, but the BeFree Live is also economical at just over $200, so there’s that.

MINI LIGHT STAND:  SERIOUSLY?

But what if you need to go even smaller, and pack even lighter?  For those emergency situations (or vacationing at peace without any argument about lugging around too much gear!), consider the further size difference between the petite BeFree Live kit, and this tiny Manfrotto stand that’s actually designed for small lights.

Above, Manfrotto BeFree Live kit; below, Manfrotto 156BLB light stand

There’s less hope mounting a traditional video pan head onto that little thing; but as seen at right, this circles back to the KPS which locates all of its weight close to the center of gravity, making it reasonable paired with the tiny light stand to suffice for an ultra-portable quick setup (taking care not to let it knock over with such a small footprint).  I also use this configuration to lock down a Blackmagic Pocket Cinema Camera or GH4 that won’t be attended anyway during multi-camera shoots, and just needs to sit still pointing at something.

MANIC PIXI EVO DREAM GIRL

Finally, for something literally pocketable, there’s this little thing with the quirky name Pixi Evo.  It hits all the right notes, with a quick-thumbscrew mounting platform attached to a ball head, and legs that not only telescope out into a further segment, but also have two spread settings for versatility (and heavier cameras).  Naturally, you can’t pull off any motion with this thing, but something’s better than nothing.  An extra bonus use for the Manic Pixi Evo Dream Girl is to be a single-grip handle when you don’t have a Steadicam-type device handy, and are — heaven forbid — walking around vlogging yourself.  But please don’t.

July 2, 2017 FocusPulling Original 1 Comment
29 June 2017

Full-frame cinematography: Sony says they’re all-in, but it ain’t so

Written by Paul Moon

Sony proclaims that they are all-in for full-frame cinematography (e.g., the video heading up this post). But what Sony needs to do first (and should have done last year), couldn’t be simpler. They almost nailed it with their NEX-VG900, putting a full-frame sensor in the proven/award-winning/ergonomically fantastic VG-series camcorder body. But the VG900 was barely too early for the market, and it aliased like a 5D Mark II. The sensor wasn’t purpose-built for video. Yet, how easily folks have forgotten that the NEX-VG10 was absolutely revolutionary when it arrived! Just speaking for myself, it was my entry point into filmmaking, and around it, I built my first camera user group that eventually became this community.

 

Sony’s auto-pilot, pernicious behavior is to fiercely defend its professional camcorders that are at the highest profit margins, amounting to impossible options for independent filmmakers, and what they’re cooking up next will be no exception to that corporate universe. Yet their debacle of overheating in the a7 series, and obvious dissatisfaction from creatives who want bare-minimum-quality audio inputs, manual controls, etc., is easily and quickly addressed by simply putting the a7S II sensor into the VG form factor. They can (and need to) do this without charging much more than a grand as a premium, on top of what the a7S II costs. Even that is a largely artificial expense. Sony doesn’t know how to read supply-and-demand curves. An a7S II sensor in an affordable VG camcorder body would sell extremely well.

It will take some thinking outside the box, ruffling old-world hierarchical feathers overseas, but it needs to be done. Think of how Blackmagic upended the camcorder world, with the aim to democratize technology instead of penny-pinching that’s practiced by protectionist mid-level accountants from Ivy League schools of theory. The best technology evolutions are always bottom-up, not top-down. Time for Sony to wake up.

June 29, 2017 FocusPulling Original, Sony a7S, Sony CineAlta F3/F5/F55, Sony NEX-FS100, Sony NEX-FS700, Sony NEX-VG10/VG20/VG30, Sony PXW-FS5, Sony PXW-FS7 Leave a Comment
12 June 2017

5.7k VR Video Footage of Garmin VIRB 360 Camera

Written by Paul Moon

This is my first test of the new Garmin VIRB 360 Camera. So far, it ain’t goin’ well! The product is fresh from the factory, and I checked its lenses that are spotless/never touched, but these chromatic aberrations and overall foggy smudginess around the highlights are a big problem.

Aiming to push the camera to its maximum specs, I used the so-called “RAW” mode that doesn’t stitch in-camera. I also selected the Neutral color profile, to protect the highlights and accommodate later color grading. The reported ISO of the clip was quite low in this environment (a little over 100), but the digital noise and compression artifacts make the high resolution of this product (its best feature) almost meaningless.

Because the device is incapable of stitching its peak 5.7k resolution in-camera, and because Garmin provides no solution for dealing with that footage (Garmin’s VIRB Edit software fails to mention anything about this), I needed to use Autopano Video for manual stitching. Weirdly, although that program’s Fisheye Lens stitching parameter worked surprisingly well, this camera’s metadata reporting a 6mm focal length actually performed poorly: Autopano Video only stitched accurately after manual entry of 8mm; and then, all that was left was to level the horizon (easy).

Because Adobe Premiere is still in the stone ages when it comes to VR, there is no possible way to export 360-degree equirectangular videos at any higher resolution than 4k in H.264. Thus I could not do any editing to the clips and needed to export them straight from Autopano Video into ProRes format at the full 5760 x 2880 resolution that you are able to see here at this clip via YouTube. (The official H.264 spec is ultra-conservative, and Adobe obeys it, by preventing any exports beyond 4k, even though outside conversion — with further generational loss — is possible using other less conservative encoders like FFMPEG, which is itself a non-GUI command line dinosaur.)

I also ran a test using the in-camera stitching at the slightly lower 4k resolution (standard ultra-HD at 3840 x 2160 resolution). Embedded below (uploaded straight from the camera file, without any further encoding), it doesn’t look much better, further proving that the resolution gain of 5.7k is dramatically offset by poor optical quality, from the lenses down to the sensor.

I’m losing interest fast in this once-promising new product, but a full review will get published eventually here via sister site www.VRcine.org. Now, all eyes are on the Yi Technology 360 camera, which I hope to receive soon…

June 12, 2017 FocusPulling Original, FocusPulling Original Video, VRcine 2 Comments
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