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A new type of teleconverter is coming.
  
 
Uarctos
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p.2 #1 · p.2 #1 · A new type of teleconverter is coming.


0-2x means the lens will go from 0mm all the way to 1000mm


May 25, 2023 at 11:51 AM
Z250SA
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p.2 #2 · p.2 #2 · A new type of teleconverter is coming.


Come on, it has no, as in zero, magnification to two times. Surely that must be 0-2x!

On the subject of it fitting the other large whites, I feel bifurcated. On one hand it would be splendidly stupid if the 0-2 would not fit the RF 400, 600, 800 and 1200. 0-2400mm, woff!!

But on the other hand, if it would not fit, and C would bring a new breed of big whites to the market within a few years, the users would have to buy the new stuff to get the convenience of the 0-2. Pure genius!
May 25, 2023 at 02:02 PM
jedibrain
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p.2 #3 · p.2 #3 · A new type of teleconverter is coming.


This would make the 100-300 2.8 my lottery winning/bucket list big white. 100 2.8 all the way up to 600 5.6 in one lens....dang.

I'm starting to think selling a kidney right when I retire to buy this lens and that TC may be a wise plan. Get me the lens to play with, and reduce the risk of running out of my meager retirements savings all at the same time.

-Brian
May 25, 2023 at 05:46 PM
rscheffler
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p.2 #4 · p.2 #4 · A new type of teleconverter is coming.


Question in my mind: if it spans 1-2x magnification, what will be the image quality hit by the additional optics in the light path at 1x? Is there a free lunch here to keep the TC attached at all times without optical compromises? It just doesn't seem logical for this to be true.

Down the road when Canon finally has a pro level APS-C body, how about a 0.625-1.25x speedbooster/TC combo? This way the 100-300 and 200-500 can be used at FF equivalent fields of view of 100-300 to 200-600 and 200-500 to 400-1000 respectively on APS-C. If more reach is needed, then use this 1-2x, or the traditional 1.4 and 2x TCs.

Maybe I should patent this ASAP!

Additionally, I feel like the zoom TC idea would be much more usable if the TC's zoom was motor driven. For example, you could assign turning the control ring to 'zoom' the TC, or assign a dial on the camera. From my experience with the 200-400, one thing I don't like about the internal TC design is that it's necessary to physically move my left hand off the zoom ring to flip the TC in and out. I would have loved a servo-driven actuator instead, where pressing a button, such as those on the lens, would flip it in and out instead. Way faster but of course more complicated and more expensive. I believe Nikon put the TC lever for their 180-400 on the right side so it's at least possible to move with a couple fingers gripping the camera (by the looks of it - I have never tried it nor have I looked into whether it's possible).


May 25, 2023 at 09:37 PM
ruralmontanan
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p.2 #5 · p.2 #5 · A new type of teleconverter is coming.


Admittedly, I’m a bit of a skeptic with Canon, so what’s the catch? How would this make financial sense for them when we’re all buying one $10k lens and this relatively cheap adapter instead of three $10k lenses? Okay, so there’s a little bit of an image quality loss and a stop or two of light—we expect that. There’s got to be more loss to it than that because it seems like our ideal version of this TC would kill their lens sales. What’s the sweet spot here for Canon? Limit it to their $10k+ lenses? Sacrifice enough image quality so that the big spenders with the highest demands continue buying more lenses? They’re not going to just give us what we want here so there must be a catch.
May 25, 2023 at 11:43 PM
EB-1
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p.2 #6 · p.2 #6 · A new type of teleconverter is coming.


ruralmontanan wrote:
Admittedly, I’m a bit of a skeptic with Canon, so what’s the catch? How would this make financial sense for them when we’re all buying one $10k lens and this relatively cheap adapter instead of three $10k lenses? Okay, so there’s a little bit of an image quality loss—we expect that. There’s got to be more loss to it than that because it seems like our ideal version of this TC would kill their lens sales, and the one thing we all know about Canon is they’re good at business.

It's just a rumor. I would not be surprised to see a non-zooming TC and even if there is a zooming TC, the IQ won't be as good as optimized fixed TCs.

EBH
May 26, 2023 at 12:14 AM
rscheffler
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p.2 #7 · p.2 #7 · A new type of teleconverter is coming.


ruralmontanan wrote:
Admittedly, I’m a bit of a skeptic with Canon, so what’s the catch? How would this make financial sense for them when we’re all buying one $10k lens and this relatively cheap adapter instead of three $10k lenses? Okay, so there’s a little bit of an image quality loss and a stop or two of light—we expect that. There’s got to be more loss to it than that because it seems like our ideal version of this TC would kill their lens sales. What’s the sweet spot here for Canon? Limit it to their $10k+ lenses? Sacrifice enough image quality...Show more →

I think the reality Canon sees is that customers buying super-teles are only buying one and supplementing it with slower zooms that fill certain applications. Sure, there are some that still have more than one super-tele, but I feel like that's becoming a very rare thing. Perhaps Canon is trying to provide some variety in their long lens offerings - a few primes and probably a couple fast zooms to broaden the appeal of their super-tele line. If one is all most can justify, then offering this kind of TC is an additional sale where there wasn't one before, but it also expands the capabilities of these very expensive lenses. It could potentially keep customers from switching away, or bring some over to Canon. Yes, if this ever materializes, perhaps its compatibility will be limited to certain higher-end (expensive) lenses.
May 26, 2023 at 12:25 AM
Scott Stoness
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p.2 #8 · p.2 #8 · A new type of teleconverter is coming.


Oh no- my wife does not even know what's coming - I have resisted GAS and all new RF big whites to date, because my ef 600f4 and 200-400 and 100-400 - work just fine on my R5. But if this comes out - I would be tempted to buy the rf 400/2.8 and 600f4 and 100-500.

Finally an alternative to my 200-400 which is the perfect bear/moose/wolf lens. But it might cost me $30k to get RF lens plus the extender.

Canon has finally found an incentive for old big white owners to switch.

She will be hoping that it degrades the performance in the 1.0 mode.


May 26, 2023 at 09:33 AM
AmbientMike
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p.2 #9 · p.2 #9 · A new type of teleconverter is coming.


I wasn't upset about a built in tc on 100 300 etc because there might be a new tc at some point that you'd rather use anyway


May 26, 2023 at 09:48 AM
rscheffler
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p.2 #10 · p.2 #10 · A new type of teleconverter is coming.


The benefit of a built-in TC is primarily the convenience of its immediacy. It's a quick flick of the finger to use. There's no need to separate the camera and lens to install it. This is great in situations where the desire to avoid or minimize shooting disruption is critical or when weather conditions are not favorable. As you can imagine, if the camera and lens are under a rain cover while on the sidelines of a sports event, it's a PITA to quickly add/remove an external TC.

I will certainly miss having this option if it's excluded from the 200-500, which appears to be the case based on the rumors. But at least now with higher resolution sensors and the likelihood that future sports-centric cameras from Canon will be higher resolution to better match the competition's offerings, there is more flexibility to crop than was the case at ~18-20MP in the 1DX series era, where I felt the use of a TC was more of a necessity.
May 26, 2023 at 10:27 AM
 


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jedibrain
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p.2 #11 · p.2 #11 · A new type of teleconverter is coming.


rscheffler wrote:
Question in my mind: if it spans 1-2x magnification, what will be the image quality hit by the additional optics in the light path at 1x? Is there a free lunch here to keep the TC attached at all times without optical compromises? It just doesn't seem logical for this to be true.

Down the road when Canon finally has a pro level APS-C body, how about a 0.625-1.25x speedbooster/TC combo? This way the 100-300 and 200-500 can be used at FF equivalent fields of view of 100-300 to 200-600 and 200-500 to 400-1000 respectively on APS-C. If more reach is...Show more →

The RF Tcs and EF vIII TCs had basically no impact to IQ on many lenses. So I think its safe to assume they could achieve great results with this one.

-Brian
May 26, 2023 at 10:38 AM
TakesRandomPics
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p.2 #12 · p.2 #12 · A new type of teleconverter is coming.


BTW there is a built in TC with easy switching in FF cameras - set it to crop mode. Yes you lose resolution but if you were going to crop those out anyway you don't really lose anything. There is also evidence to show that it helps with focus acquisition so technically EVERY lens has a built in TC


May 26, 2023 at 12:36 PM
cohenfive
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p.2 #13 · p.2 #13 · A new type of teleconverter is coming.


0X is called a lens cap.


May 26, 2023 at 06:03 PM
Imagemaster
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p.2 #14 · p.2 #14 · A new type of teleconverter is coming.


TakesRandomPics wrote:
BTW there is a built in TC with easy switching in FF cameras - set it to crop mode. Yes you lose resolution but if you were going to crop those out anyway you don't really lose anything. There is also evidence to show that it helps with focus acquisition so technically EVERY lens has a built in TC

Makes you wonder why competent and experienced photographers have used and continue to use TC's instead of cropping.

Could it be that they get better results with TC's
May 26, 2023 at 06:34 PM
AmbientMike
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p.2 #15 · p.2 #15 · A new type of teleconverter is coming.


..



Edited on May 27, 2023 at 11:28 AM · View previous versions
May 26, 2023 at 11:19 PM
ruralmontanan
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p.2 #16 · p.2 #16 · A new type of teleconverter is coming.


Scott Stoness wrote:
Canon has finally found an incentive for old big white owners to switch.

Good point here. I’d be willing to guess this might be one of their primary objectives with this release.
May 27, 2023 at 12:25 AM
Tom_W
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p.2 #17 · p.2 #17 · A new type of teleconverter is coming.


EB-1 wrote:
"The new teleconverter will have a zoom capability set to 0X, 1.4X and 2X."

0x, seriously?

EBH

Lens Cap mode.



May 27, 2023 at 08:33 AM
Scott Stoness
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p.2 #18 · p.2 #18 · A new type of teleconverter is coming.


I was reading about the 200-500 f4 rumour. Add a 1.0-1.4-2.0 adapter and you have 200f4 - 500f4 - 700f5.6 - 1000 f8 at the ready. All in one lens.

The 100-300f2.8 (confirmed) and the 200-400f4 (rumoured) , combined with 1.0-1.4-2.0, would take care of sport and wildlife respectively.

Hopefully the 200-400 is light and the 1.0-1.4-2.0 is light with limited image degradation.

These lens/adapters make sense for canon, because they will cause much upgrading. ($$$ for canon).
May 27, 2023 at 09:12 AM
AmbientMike
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p.2 #19 · p.2 #19 · A new type of teleconverter is coming.


This is basically an internal tc if Canon comes out with it, since you don't have to remove it to go back to the original FL. Also gives 2x.

As far as the math, 1x400mm gives you 400mm, 0x400mm gives you 0mm. So it's 1x-2x tc.
May 27, 2023 at 11:28 AM
TakesRandomPics
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p.2 #20 · p.2 #20 · A new type of teleconverter is coming.


Imagemaster wrote:
Makes you wonder why competent and experienced photographers have used and continue to use TC's instead of cropping.

Could it be that they get better results with TC's

I'm not claiming it replaces true TCs especially on the lower resolution bodies. It's an option with it's set of tradeoffs like every other photographic tool?
May 27, 2023 at 11:38 AM
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