It is a gimbal type head, obviously to compete directly with Wimberly's, but is lighter weight (3 lbs). It is made from aluminum tubing instead of casting like the Wimberly. It is supposed to fold up to make for easy packing in a camera bag. It also has a built in tensioning device that allows you to set the lens at any position and it will stay put. They seemed pretty excited about it - and said John Shaw has fallen in love with his, along with some others.

The King Cobra is lighter than the Wimberley Head (3.1lbs vs. 3.6lbs) and it is also less expensive ($329.95 vs. $365.00). These differences are even greater if you opt for the Wimberley head with a quick release. It could be argued that the King Cobra is less bulky than the Wimberley Head, but, if you remove the platform of the Wimberley (it easily slips off) the Wimberley can slide into a narrower pocket than the King Cobra. The heads are roughly the same size and neither is particularly easy to pack. A major disadvantage of the King Cobra head is that the offset of the tilt mechanism is designed specifically for the largest lenses (600mm f/4, 400mm f/2.8). If you put a smaller lens on the head (say a 300mm f/2.8 or a 400 f/5.6) then the foot of the lens is not long enough to position the lens above the pan mechanism on the head. This cocks the pan mechanism causing it to pan less smoothly and causing excess stress on the pan mechanism. The Sidekick which also has a side-mount has an offset which will accommodate lenses which range in size from a 500mm f/4 to an 80-200 f/2.8 zoom. And, we sell adapters which allow even the largest lenses to be used on the Sidekick without causing any cocking of the pan mechanism.


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If you already have a ball head with an Arca-Swiss style Quick release, the Sidekick is your least expensive, lightest weight, and most packable option. The Sidekick costs $250.00 and weighs 1.3lbs (2.9lbs when combined with an Arca-Swiss B-1). The Sidekick can be removed at any time to use your ball head with smaller lenses or for easy packing. If you are using the Wimberley Head or the King Cobra you can't attach the camera body to the head so you must switch tripod heads anytime you want to use lenses without a rotation collar. The Sidekick is perfect for travel or for people who switch from telephoto to short focal lengths often.

Hmm . . . well not for me. Not even "almost easy." I have an impossible time of it. I use an 800mm/5.6 on the Wimberly with a Gitzo 410. The difficulties of in-flight photography seem just about insurmountable for me personally. The birds are too far away and do not fill enough of the frame, or the angle becomes impossible to cope with as I try to scrunch down under the lens, or (usually!) the focus is off, often WAY off - my lens is not AF).

I hope for better luck with an AF 300/2.8 IS with 1.4X or even 2X converter hand-held. While I am quite happy with my Wimberly, it has not made in-flight photography "almost easy", or even possible for me. How are other photographers being successful with in-flight photography?

I dont have an answer to the orginal question, but another question related to these devices. As I understand the main purpose of the Sidekick and Kirk King Cobra is to get easier handling for heavy telelenses, especially for bird in flight photos. But how does the Sidekick or King Cobra affect shooting stationary objects. Does these devices improve or worsen vibration problems with long shutter speeds?

Also - the post on info from Kirk was merely passing along heresay. I think most people on photo.net know (or should know) that when buying something it shouldn't matter who is or isn't using a product, no matter who they are. The most important consideration should be if it fulfills your own needs and situation. It is nice that both companies offer "free" trials of their products so you can decide for yourself.

At a recent wildlife workshop of mine, I was able to side by side compare the King Cobra and the Wimberly, both set up with a Nikon 500/4AF-I on gitzo 341 tripods and F5's. These were TWO IDENTICAL SETUPS, so it was easy to go back and forth and compare them. We agreed that the Wimberly was a slightly smoother, but we felt that the difference was academic, as both are great. Both mounts were actually great, though the Wimberley does have the adjustment for vertical positioning of the camera/lens for balance. The Wimberly also has the advantage of being able to mount smaller lenses, including ones without a tripod collar, making it easier when you want to shoot horizontals. I will purchase an adapter from Kirk to make the King Cobra more functional in this area, which will make it more like the Wimberly. (Maybe consider adding the cost of this adapter to the price of the Kirk for a better "complete" price comparison between the two.)

King cobras live mainly in the rain forests and plains of India, southern China, and Southeast Asia, and their coloring can vary greatly from region to region. They are comfortable in a variety of habitats, including forests, bamboo thickets, mangrove swamps, high-altitude grasslands, and in rivers.

The International Union for Conservation of Nature has listed the king cobra as vulnerable to extinction. These snakes face a variety of threats stemming from human activities. Heavy deforestation in Southeast Asia has destroyed the habitats of many king cobras, while they are also harvested in large numbers for skin, food, and medicinal purposes. They are also collected for the international pet trade. King cobras are also persecuted by humans who fear their menacing reputation.

This World War II fighter was developed from the P-39 Airacobra, which it closely resembles. The U.S. Army Air Forces never used the P-63 in combat, although some were used for fighter training. Many P-63s were exported as lend-lease aircraft; the Soviet Union received 2,456 and Free French forces obtained 300. Since the P-63's low-level performance was adequate, it was widely used by the Soviets for such missions as "tank busting." Bell produced 3,305 P-63s, 13 of which were P-63Es.


The most unusual P-63 variations were the RP-63A and RP-63C "pinball" versions developed late in WWII. Aerial gunnery students fired at these manned target aircraft using .30-cal. lead and plastic frangible machine gun bullets which disintegrated harmlessly against the target's external armor plating. Special instruments sent impulses to red lights in the nose of the "pinball" aircraft, causing them to blink when bullets struck the plane.


The P-63E on display was donated by Bell Aircraft Corp. in 1958. Although it lacks the armor plate and other "pinball" features, it is marked and painted in the unusual color scheme of an RP-63A.


TECHNICAL NOTES: 

Armament: One 37mm cannon and four .50-cal. machine guns (none on "pinball" aircraft)

Engine: One Allison V-1710 of 1,325 hp

Maximum speed: 408 mph

Cruising speed: 280 mph

Range: 450 miles

Ceiling: 43,000 ft.

Span: 38 ft. 4 in.

Length: 32 ft. 8 in.

Height: 12 ft. 7 in.

Weight: 9,350 lbs. maximum 

Serial number: 43-11728

Captured in a dramatic photo shared yesterday (Feb. 1) to Imgur, a grim scene hints at a violent battle to the death between two giant snakes, identified in the caption as a reticulated python (Python reticulatus) and a king cobra (Ophiophagus hannah), both native to Southeast Asia and among the biggest snakes in the world.

Both are formidable serpents. The reticulated python is the longest and heaviest snake on Earth, reaching 23 feet (7 meters) in length and weighing as much as 165 lbs. (75 kilograms), and wielding considerable constricting power. Meanwhile, the king cobra can measure about 18 feet (5.5 m) long and weigh up to 20 lbs. (9 kg), and has a bite that packs enough neurotoxins to fell an Asian elephant. But when these two individuals squared off, neither survived the encounter. [Viper vs. Viper! Never-Before-Seen Combat Recorded]

The photo, which was uncredited, appears to have been taken in a shallow ditch in an area where people live, judging from the empty plastic water bottles and other assorted trash scattered nearby. The location is almost certainly in tropical Asia, as that would be the only place where the two snake species would be living in close proximity in the wild, Frank Burbrink, an associate curator in the Department of Herpetology at the American Museum of Natural History in New York City, told Live Science.

"And they're both big ones," Burbrink pointed out. Though there's little in the image to help determine their scale, juvenile cobras have distinctive markings that are absent in this one, indicating that it's an adult.

"You can see little white lines on the cobra in the picture, on the part that's trailing out on the path," he said. Those white marks are remnants of the ring pattern found in juveniles, which is much brighter when they're young, Burbrink explained.

But what happened here? It's difficult to say for sure from a single photo, though the tangle probably started when the cobra attacked the python as prey, Shab Mohammadi, a postdoctoral fellow in the School of Biological Sciences at the University of Nebraska-Lincoln, told Live Science in an email.

In the image, blood is visible on the cobra's maw, perhaps from the python's wound or from an injury to the cobra's mouth that happened during the tussle, Burbrink said. How long the struggle may have lasted would have depended on the amount and potency of the venom delivered by the cobra, which is impossible to guess from a photo, he said.

I have both a side kick and the full Whimberly head. The side kick is great for a 300mm lens and for the 80-400mm. It is also great for travel and hiking when you don't want to lug the full head. It works pretty well for the 500 AFS with the special foot, but it is no replacement for the full featured head. ff782bc1db

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