September 26, 2017, 12:03:06 AM

Author Topic: Any more Super telephoto lenses with built in extender?  (Read 2279 times)

RGF

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Any more Super telephoto lenses with built in extender?
« on: September 12, 2017, 11:43:38 PM »
Do you expect to see another drop in extender like the 200-400?

Will this be common place on the next gen Great Whites?

Will Canon have multiple drop in extenders (such as 1.2, 1.4 combined to give 1.7)?

Will Nikon beat Canon to the multiple drop in extenders?

Of course all this is asked in pure fun.  Rumors and speculation are great entertainment, especially when they are CR0.0001

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Any more Super telephoto lenses with built in extender?
« on: September 12, 2017, 11:43:38 PM »

Ryananthony

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Re: Any more Super telephoto lenses with built in extender?
« Reply #1 on: September 13, 2017, 12:28:32 AM »
There are many more educated then I, so to them I ask this question. Would it be possible for Canon to create a 2x teleconvertor that only loses 1 stop for example? Or possibly a 1.4 that doesn't lose anything?


privatebydesign

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Re: Any more Super telephoto lenses with built in extender?
« Reply #2 on: September 13, 2017, 12:45:28 AM »
There are many more educated then I, so to them I ask this question. Would it be possible for Canon to create a 2x teleconvertor that only loses 1 stop for example? Or possibly a 1.4 that doesn't lose anything?

No, is the short answer. Physics gets in the way of getting something, longer focal length, for nothing, slower aperture.
Too often we lose sight of the fact that photography is about capturing light, if we have the ability to take control of that light then we grow exponentially as photographers. More often than not the image is not about lens speed, sensor size, DR, MP's or AF, it is about the light.

Eldar

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Re: Any more Super telephoto lenses with built in extender?
« Reply #3 on: September 13, 2017, 06:18:18 AM »
A 600 f4 DO with built in 1.4x ...  :P
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AlanF

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Re: Any more Super telephoto lenses with built in extender?
« Reply #4 on: September 13, 2017, 06:59:23 AM »
There are many more educated then I, so to them I ask this question. Would it be possible for Canon to create a 2x teleconvertor that only loses 1 stop for example? Or possibly a 1.4 that doesn't lose anything?

f-number = focal length/aperture

So, if you double the focal length with same size aperture, you inevitably double the f-number
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CanonFanBoy

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Re: Any more Super telephoto lenses with built in extender?
« Reply #5 on: September 13, 2017, 10:15:00 PM »
Do you expect to see another drop in extender like the 200-400?
No

Will this be common place on the next gen Great Whites?
No

Will Canon have multiple drop in extenders (such as 1.2, 1.4 combined to give 1.7)?
Absolutely not.

Will Nikon beat Canon to the multiple drop in extenders?
No. Everyone knows Sony is the industry leader when it comes to innovation. ::)

Of course all this is asked in pure fun.  Rumors and speculation are great entertainment, especially when they are CR0.0001

From what I understand, Canon is working on a camera and lens combo for birds to take photos of birders.

RGF

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Re: Any more Super telephoto lenses with built in extender?
« Reply #6 on: September 13, 2017, 11:34:48 PM »
A 600 f4 DO with built in 1.4x ...  :P

Can't come soon enough (assuming quality is excellent)

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Re: Any more Super telephoto lenses with built in extender?
« Reply #6 on: September 13, 2017, 11:34:48 PM »

centuaryseries

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Re: Any more Super telephoto lenses with built in extender?
« Reply #7 on: September 13, 2017, 11:57:28 PM »
Do you expect to see another drop in extender like the 200-400?
No

Will this be common place on the next gen Great Whites?
No

Will Canon have multiple drop in extenders (such as 1.2, 1.4 combined to give 1.7)?
Absolutely not.

Will Nikon beat Canon to the multiple drop in extenders?
No. Everyone knows Sony is the industry leader when it comes to innovation. ::)

Of course all this is asked in pure fun.  Rumors and speculation are great entertainment, especially when they are CR0.0001

From what I understand, Canon is working on a camera and lens combo for birds to take photos of birders.

Oh, I do so hate "spoilers". :o

MrFotoFool

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Re: Any more Super telephoto lenses with built in extender?
« Reply #8 on: September 14, 2017, 12:31:38 AM »
It is interesting to me that all the major camera and lens makers have two extenders: 1.4x with one stop loss and 2x with two stop loss. However, Nikon is alone (as far as I know) in offering a third option: 1.7x with one and a half stop loss. This seems like a pretty good alternative to me, assuming the quality is just as good as the 1.4x.

A lot of us (I presume) are also waiting to see how Canon will answer the Nikon 200-500.

RGF

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Re: Any more Super telephoto lenses with built in extender?
« Reply #9 on: September 15, 2017, 01:31:55 AM »
It is interesting to me that all the major camera and lens makers have two extenders: 1.4x with one stop loss and 2x with two stop loss. However, Nikon is alone (as far as I know) in offering a third option: 1.7x with one and a half stop loss. This seems like a pretty good alternative to me, assuming the quality is just as good as the 1.4x.

A lot of us (I presume) are also waiting to see how Canon will answer the Nikon 200-500.

DO version of this lens, 30% lighter and 30% more expensive?

Talys

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Re: Any more Super telephoto lenses with built in extender?
« Reply #10 on: September 15, 2017, 03:09:10 AM »
A 600 f4 DO with built in 1.4x ...  :P

Can't come soon enough (assuming quality is excellent)

No, Canon must not make this lens.  I dream of such a wonders, and my wife would kill me if I spent the $10,000+ to buy it :P

AlanF

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Re: Any more Super telephoto lenses with built in extender?
« Reply #11 on: September 15, 2017, 03:44:36 AM »
Marry in haste, repent at leisure.
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Don Haines

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Re: Any more Super telephoto lenses with built in extender?
« Reply #12 on: September 15, 2017, 07:38:45 AM »
There are many more educated then I, so to them I ask this question. Would it be possible for Canon to create a 2x teleconvertor that only loses 1 stop for example? Or possibly a 1.4 that doesn't lose anything?

Your F number is the focal length of the lens divided by the (approximate) width of the big element. If you put in a 2X teleconverter, you double the focal length, but the width of the big element remains the same, so the F stop has to double as well...
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Re: Any more Super telephoto lenses with built in extender?
« Reply #12 on: September 15, 2017, 07:38:45 AM »

ahsanford

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Re: Any more Super telephoto lenses with built in extender?
« Reply #13 on: September 15, 2017, 02:44:27 PM »
A lot of us (I presume) are also waiting to see how Canon will answer the Nikon 200-500.

^^ This ^^ 

I realize a 200-400 + TC is a different class of lens, but I can't state enough how important a vanilla longer zoom (without a T/C) for Canon is.  I've said it many times, but to shoot first party glass longer than 400mm on Canon FF, you have the choice of using a teleconverter or $9000 needs to leave your pocket.  That is a laughable choice.

Canon has to know at this point that people want to shoot longer than 400mm without the drawbacks of a T/C.  A something - 500mm or 600mm lens simply needs to be offered.

I recognize how 600mm + EF's f/5.6 narrowest max aperture rule = big entrance pupil = huge cost, but I think even a $3k 200-600 f/5.6 IS would sell very well.  It would:

  • Unlock much more of the frame to be used with AF

  • Eliminate the T/C hit to IQ

  • Obviate the need for photographers to dismount in the field and put a T/C on.  I recognize this need might not come up often, but simply having the reach onboard is preferable.

Sigma and Tamron won't make this happen for Canon, though.  I believe Nikon's move of a shockingly affordable $1400 200-500 f/5.6 VR -- if anything -- is the straw that will break the camel's back here and get Canon to offer something similar.  It may not be -500mm, it sure as hell won't cost $1400, but Canon ought to respond here.

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chrysoberyl

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Re: Any more Super telephoto lenses with built in extender?
« Reply #14 on: September 15, 2017, 03:10:08 PM »
More engineering and technology than physics.  2x teleconvertor that only loses 1 stop: One or more elements must be microscopic black holes to bend the light with little light loss.  Carrying such a teleconverter around might be challenging.

1.4 that doesn't lose anything: Now, currently understood physics does preclude that.

There are many more educated then I, so to them I ask this question. Would it be possible for Canon to create a 2x teleconvertor that only loses 1 stop for example? Or possibly a 1.4 that doesn't lose anything?

No, is the short answer. Physics gets in the way of getting something, longer focal length, for nothing, slower aperture.
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Re: Any more Super telephoto lenses with built in extender?
« Reply #14 on: September 15, 2017, 03:10:08 PM »