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FORUMS News & Rumors Lens Rumors and Predictions
Thread started 08 May 2016 (Sunday) 19:18
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I predict that a 500 f/5.6 or 600 f/5.6 will come out in next few years

 
CyberDyneSystems
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Oct 05, 2016 11:19 |  #46

buddy4344 wrote in post #18148969 (external link)
I would love a theoretical weight/size comparison between a 600mm f/5.6 vs. the 600mm DO f/4.

..

600mm f/5.6 would weigh in at around 5-6 pounds.

For the DO, we need to make some assumptions based on the few examples of DO we have already been able to weigh.

The 400mm DO (@ 4.6 pounds) only saves about a pound or so vs. what a 400mm f/4 would normally weigh. (between 5.6-6.4 pounds. 5.6 being "new canon glass" weight, 6.4 being older mid 2000 gen Canon weight and current Nikon weight)

we'll stick with current Gen Canon weight of 5.6, to keep all else as equal as we can.

The lightest 600mm f/4 currently made is the Canon @ 8.6 pounds (Much lighter than the last version)

If we can only save 1 pound, then we are at over 7 pounds still.

If we go via percentage, 5.6 vs. 4.6 is a 17% decrease in weight, We are still at about 7.1 pounds for a 600mm f/4 DO.


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CyberDyneSystems
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Oct 05, 2016 11:28 |  #47

In my usual fashion, I will bunk the CR article.

I don't imagine for a second that Canon is ready to start replacing it's current line up of super telephotos. They are very new designs and already far ahead of the competition in new lightweight design. (Nikon 600mm is over 11 pounds still compared to Canon 8 pounds)

The only ones I can see getting a refresh are the 200mm f/2 and 800mm, although even those do not seem in dire need of a refresh. The Canon 200mm is a pound lighter then the Nikon. The 800mm ushered in the "gen II" body design that gave us the weight savings even though it was not a Gen II lens in the sense that there was no Gen 1 for it to replace.


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buddy4344
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Oct 05, 2016 15:36 |  #48

CyberDyneSystems wrote in post #18149017 (external link)
600mm f/5.6 would weigh in at around 5-6 pounds.

For the DO, we need to make some assumptions based on the few examples of DO we have already been able to weigh.

The 400mm DO (@ 4.6 pounds) only saves about a pound or so vs. what a 400mm f/4 would normally weigh. (between 5.6-6.4 pounds. 5.6 being "new canon glass" weight, 5.6 being older mid 2000 gen Canon weight and current Nikon weight)

we'll stick with current Gen Canon weight of 5.6, to keep all else as equal as we can.

The lightest 600mm f/4 currently made is the Canon @ 8.6 pounds (Much lighter than the last version)

If we can only save 1 pound, then we are at over 7 pounds still.

If we go via percentage, 5.6 vs. 4.6 is a 17% decrease in weight, We are still at about 7.1 pounds for a 600mm f/4 DO.

Thanks for doing the math. from my friends in South Africa that shoot a lot of big glass, the comfortable limit for most is right at 7 pounds (the 500mm f/4 ver II). Some hand-hold the 200-400, but only for short periods or younger, stronger guys. That's 8 pounds. I don't really know of anyone that regularly handholds the current 600 and can truly be steady enough to get good shutter speeds.

This math further makes me think a 600mm, f/5.6 at around 5 to 6 pounds would be a hit.

Where I become a little less sure of my comments is actually with Canon's 100-400 ver II and thoughts of the recent newer Tamron and Sigma zooms that reach 600mm. The 1-4 V2 is really sharp with the 1.4x III T/C and f/8 and gives us 560mm equivalent. I never thought a zoom could be that sharp with a T/C. Is my dream lens a zoom?

I haven't seen field images with the newer Tamron, but, of course it is f/6.3. I don't know if the Tamron will autofocus with their T/C attached. The write-up says it is 1 stop, so I have some doubts. Conversely, I can't think today's Canon would come out with a lens of this family that wouldn't autofocus with their 1.4x T/C.

I'm rambling. I just want 600mm that fits in my bag and ways less than 7 pounds and is Canon 'new generation' sharp. A simple request.


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Oct 05, 2016 15:44 |  #49

One more point. It's not just the weight, but also a) the length of the lens and b) where the weight is centered. We are really talking leverage or torque ( T = F * r * sin(theta)) when it comes to holding a lens and shooting. Obviously, if all of the weight was right at the camera, it would be a heck of a lot easier to handhold than when it's 30 inches out front.

I had the 400 DO for years and must say it was relatively light feeling even thought it weighed a lot because it was short.


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CyberDyneSystems
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Oct 05, 2016 15:50 |  #50

Right now the closest you will come is the 400mm DO with 1.4x T-Con at about 5 pounds, f/5.6 560mm. But of course, you know this better than I do.

With a 1Dx2 or 5D4 that will also allow all AF points with a 2X @ 800mm f/8

But yeah, it would be nice to start with a bare lens.


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Oct 06, 2016 12:49 |  #51

Because I know that Jake (a.k.a. CDS) loves Canon Rumors:

http://www.canonrumors​.com ...-with-eos-6d-mark-ii-cr1/ (external link)


Buddy4344

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DreDaze
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Oct 07, 2016 00:18 |  #52

buddy4344 wrote in post #18149994 (external link)
Because I know that Jake (a.k.a. CDS) loves Canon Rumors:

http://www.canonrumors​.com ...-with-eos-6d-mark-ii-cr1/ (external link)

They're going to come out with a 200-600mm lens that competes well with the sigma/tamron lenses...that would mean it would have to be priced near them...who would buy the 100-400II then


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I predict that a 500 f/5.6 or 600 f/5.6 will come out in next few years
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