Canon's newest f/0.95 lens, 1400mm
Dec 2, 2020 09:49:24 #
This is an initial picture, leaked to the press, of Canon's newest 1400mm lens. Meant to compete with Nikon's f/0.95. Will attach to any body, with the specialized adaptor. Comes with its own mounting flange. Filters will be available in January. As soon as the photographer counts to 3, remember to duck a split second later. There will be no re-takes.....
I captured this image at the Battle of Moore's Creek Bridge, east of Pender county NC. This was the site of an important Revolutionary War battle. Patriots defeated a regiment of Loyalist Scottish Highlanders from Cross Creek, a settlement near the Cape Fear River. Every time I look at this, it gives me the creeps and makes the hair on my arms stand up, thinking that this could be the last thing some Loyalist troops saw when they came out of the swamp.
I captured this image at the Battle of Moore's Creek Bridge, east of Pender county NC. This was the site of an important Revolutionary War battle. Patriots defeated a regiment of Loyalist Scottish Highlanders from Cross Creek, a settlement near the Cape Fear River. Every time I look at this, it gives me the creeps and makes the hair on my arms stand up, thinking that this could be the last thing some Loyalist troops saw when they came out of the swamp.
Dec 2, 2020 10:13:54 #
wrangler5
Loc: Missouri
Yeah, that really would make for an "Oh, S#*t" moment, although you probably would first see it from a LOT farther away so it might not have been as scary.
But I don't think I've ever noticed wheel rims that were set that far "out" from the hubs. The cannon that I'm responsible for firing every New Year's Day has its rims directly in line with the hubs - the vertical load goes directly down through the spoke to the rim. The offset wheels on this one look like they would take extra effort to make, and require extra material to insure they were as strong as one that put the axle load directly down onto the rim at the ground. Anybody familiar with this design feature, and the reason for it?
But I don't think I've ever noticed wheel rims that were set that far "out" from the hubs. The cannon that I'm responsible for firing every New Year's Day has its rims directly in line with the hubs - the vertical load goes directly down through the spoke to the rim. The offset wheels on this one look like they would take extra effort to make, and require extra material to insure they were as strong as one that put the axle load directly down onto the rim at the ground. Anybody familiar with this design feature, and the reason for it?
Dec 2, 2020 10:24:12 #
wrangler5 wrote:
Yeah, that really would make for an "Oh, S#*t... (show quote)
Let's put together a group order to get a better price?
Dec 2, 2020 11:29:27 #
larryepage
Loc: North Texas area
wrangler5 wrote:
Yeah, that really would make for an "Oh, S#*t... (show quote)
I'm guessing it was done to provide more room for the loaders to work at the breech end of the gun, or to allow space for supplies to be kept between the wheels so that they are easily accessible for faster reloading.
Dec 3, 2020 00:03:07 #
Think about how a modern semi truck trailer wheel is constructed. The wheels extend well beyond the hub, yet are quite capable of carrying many tons of weight. As long as the wooden spokes have enough mass and tensile strength the weight is not a problem. Made from White Oak most likely.
Dec 3, 2020 06:57:22 #
Can't seem to find a 1400mm f/0.95 by anyone! can't visualize the size it would have to be either!!
Dec 3, 2020 10:58:16 #
Dec 3, 2020 11:12:29 #
Dec 3, 2020 11:41:54 #
wrangler5
Loc: Missouri
Naw, just some big wheels. Like in the picture.
Of course, it looks like that setup was made to be pulled by horses, so . . .
Of course, it looks like that setup was made to be pulled by horses, so . . .
Dec 3, 2020 12:12:17 #
Dec 3, 2020 12:47:19 #
Don, the 2nd son wrote:
Can't seem to find a 1400mm f/0.95 by anyone! can't visualize the size it would have to be either!!
It would be a monster!!
Dec 3, 2020 14:31:03 #
Dec 3, 2020 17:08:49 #
joecichjr wrote:
What size camera bag do you think you'd need?
A grandmother's purse would probably work...have you seen the assortment of stuff they pack in one of those? lol
Dec 5, 2020 18:26:01 #
wrangler5 wrote:
...But I don't think I've ever noticed wheel rims that were set that far "out" from the hubs. .... Anybody familiar with this design feature, and the reason for it?
First thing I noticed. I'd guess they used the dished wheels so the hubs would be less likely to snag on things like trees when they were towing the pieces around in a hurry. Also - the offset maximizes the lateral stability for a given overall width.
Dec 5, 2020 18:48:25 #
wrangler5
Loc: Missouri
OhD wrote:
First thing I noticed. I'd guess they used the dished wheels so the hubs would be less likely to snag on things like trees when they were towing the pieces around in a hurry. Also - the offset maximizes the lateral stability for a given overall width.
Those sound plausible, although I wonder if snagging a wheel on a tree that was too close is any easier on the passage - and the equipment - than snagging a hub?
And while a wider stance should provide more lateral stability, I have the impression that in use, the greatest load on the wheel was vertical from bouncing over the irregular surfaces of the day - not a lot of smooth roads on battlefields. A "straight" wheel puts all those loads between hub and rim in compression through the spokes, while it looks like the spokes on an offset wheel also have to deal with torque at the hub and rim connections.
But - what do I know? I'm not an engineer, and somebody built those wheels that way for a reason. And the thing survived, so it couldn't have been all bad. It just looks funny, to me.
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