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Patent: Tamron 150-600 f/5-6.3

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Canon Rumors:
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A new Supertelephoto Zoom?

This is definitely a lens that Tamron would make. If you need length and you’re on a budget, this could be a one of a kind option if and when it comes to market.
Patent Publication No. 2012-208434


* Release Date 2012.10.25

* Filing date 2011.3.30

Example 1


* Focal length f = 152.3068-582.0002mm

* FNo. = 5.12-6.45

* 2ω = 16.30-4.23 ° angle of view

* 18 sheets 13 groups lens configuration

* 5-group configuration of positive and negative positive negative

* Inner Focus (the fourth group focus group)

* Stabilizer (front group of the fifth group of anti-vibration group)

* Reduce the size of the group of anti-vibration and focus group

* To shorten the focal length of the front group of the fifth group, reduce the amount of movement of the time the anti-vibration

* Joining the front group lens and the fifth group, when the spherical aberration correction of the anti-vibration, axial chromatic aberration and chromatic aberration of magnification

Source: [EG]
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Mt Spokane Photography:
I've had the long long Tamron 200-500.  The Canon 100-400mmL is so much better that there is no real comparison.
Here's hoping that they can do a better job.

Lee Jay:
It will all come down to the optical quality.  It has to about match the 100-400L at 400mm and f/5.6.  If it's substantially worse than that, and up-res of the 100-400L might beat it.  If it's equal, then that's another story.  And it will have to be equal regardless of where the stabilization elements might happen to be at any given time (the 100-400L is in need of improvement in this area).

preppyak:

--- Quote from: Lee Jay on October 25, 2012, 08:27:17 PM ---It will all come down to the optical quality.  It has to about match the 100-400L at 400mm and f/5.6.  If it's substantially worse than that, and up-res of the 100-400L might beat it.
--- End quote ---
I kind of disagree, simply because this goes to 600mm. If it can match the 100-400 at f/5.6, then thats a really impressive feat, but, I think its equally important for it to be as sharp at 60mm as the 100-400 or 400 prime would be with a TC on. Cause if it is, then the fact it does it natively could be another leg up.

But really, the key is gonna be price. If its around the same price as the 200-500, then the range it gives might cause birders to go with it over the 100-400 (IS less important, and 600mm more critical than 400mm). Especially if a new 100-400 comes out and raises prices. If it costs more like $1300, then I can't see as many going with it

Lee Jay:

--- Quote from: preppyak on October 25, 2012, 08:42:45 PM ---
--- Quote from: Lee Jay on October 25, 2012, 08:27:17 PM ---It will all come down to the optical quality.  It has to about match the 100-400L at 400mm and f/5.6.  If it's substantially worse than that, and up-res of the 100-400L might beat it.
--- End quote ---
I kind of disagree, simply because this goes to 600mm. If it can match the 100-400 at f/5.6, then thats a really impressive feat, but, I think its equally important for it to be as sharp at 60mm as the 100-400 or 400 prime would be with a TC on. Cause if it is, then the fact it does it natively could be another leg up.

But really, the key is gonna be price. If its around the same price as the 200-500, then the range it gives might cause birders to go with it over the 100-400 (IS less important, and 600mm more critical than 400mm). Especially if a new 100-400 comes out and raises prices. If it costs more like $1300, then I can't see as many going with it

--- End quote ---

What I meant was, it'll have to be as good at 600mm and f/6.3 as the 100-400L is at 400mm and f/5.6.  If it's not, an upres of or teleconverter attached to the 100-400L could equal or beat the Tamron, making it pointless.

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