Official Lens Discussion Thread
Are you kidding me?? 
Have you seen images from this lens? I've wanted it forever. I just forgot that I finally gifted it to myself before everything went wonky. It's an amazing lens. That's why I honestly can't believe I was that far out there to have forgotten about it. It's sincerely looney tunes.
takes one to know one.
Earth-bound misfit
Joined: Mar 2006
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Earth-bound misfit
Joined: Mar 2006
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Sorry to hear it, buddy.
Burning Brakes
Joined: Feb 2011
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From: OR
My first Avatar....
Joined: May 2006
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From: NJ
Regarding Tamron:
This is from another forum. The writer is a camera shop/business owner.
This is from another forum. The writer is a camera shop/business owner.
Insider information received.
I have agreed not to disclose the senders name, but she is an EMPLOYEE of Tamron-USA Sales Division. It seems my order cancellation has sent a message to Tamron and an answer was justified, at least by this sales rep.
Canon has been terrible about supplying their AF algorithm to aftermarket lens makers for well over 2 decades. (Nikon, Pentax and Sony have freely supplied this info to any lens makers requesting it) This causes those lens makers to literally guess at the AF algorithm when designing their lenses, all so that Canons lenses always seem sharper on Canon cameras for the purpose of justifying their much higher costs.
Canon entered into an agreement with Tamron to supply that AF algorithm in exchange for first release benefits of their mount only on new release products from Tamron. The first such release was the newest 70-200mm F2.8 VC lens. The Canon mount was released first followed by the Nikon mount almost 4 months later. Second was the 24-70mm F2.8 VC lens, again followed by the Nikon mount over 2 months later. Now we have the new 150-600mm VC lens issued in that Canon mount first, apparently to be followed by the Nikon mount in 2 to 3 months after initial release.
Looks like Tamron has sold out to Canon in order to get the AF algorithm that Sigma and Tokina are still not getting. Sigma has resolved the issue by developing the USB Dock for its newest lenses that allows users to fine tune the lens focus to any camera themselves. Tokina is still battling the issue and appears to have been left behind in the aftermarket lens race with Sigma and Tamron.
Looks like its all just politics. That and lots of advertising money.
I have agreed not to disclose the senders name, but she is an EMPLOYEE of Tamron-USA Sales Division. It seems my order cancellation has sent a message to Tamron and an answer was justified, at least by this sales rep.
Canon has been terrible about supplying their AF algorithm to aftermarket lens makers for well over 2 decades. (Nikon, Pentax and Sony have freely supplied this info to any lens makers requesting it) This causes those lens makers to literally guess at the AF algorithm when designing their lenses, all so that Canons lenses always seem sharper on Canon cameras for the purpose of justifying their much higher costs.
Canon entered into an agreement with Tamron to supply that AF algorithm in exchange for first release benefits of their mount only on new release products from Tamron. The first such release was the newest 70-200mm F2.8 VC lens. The Canon mount was released first followed by the Nikon mount almost 4 months later. Second was the 24-70mm F2.8 VC lens, again followed by the Nikon mount over 2 months later. Now we have the new 150-600mm VC lens issued in that Canon mount first, apparently to be followed by the Nikon mount in 2 to 3 months after initial release.
Looks like Tamron has sold out to Canon in order to get the AF algorithm that Sigma and Tokina are still not getting. Sigma has resolved the issue by developing the USB Dock for its newest lenses that allows users to fine tune the lens focus to any camera themselves. Tokina is still battling the issue and appears to have been left behind in the aftermarket lens race with Sigma and Tamron.
Looks like its all just politics. That and lots of advertising money.
I Shoot with a Camera
Joined: Oct 2001
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From: Vancouver BC
edit: 11.38% to be exact
http://www.tamron.co.jp/en/investors/ir/
Last edited by is300eater; Feb 2, 2014 at 05:30 PM.
Moderator Alumnus
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Canon filed a patent for a 70-400 f/4.5-5.6L IS 
I had been eyeing the 100-400, think I'll hold out for this one.
http://www.canonrumors.com/2014/02/p...0-f4-5-5-6l-is
I had been eyeing the 100-400, think I'll hold out for this one.
http://www.canonrumors.com/2014/02/p...0-f4-5-5-6l-is
Patent: Canon EF 70-400 f/4.5-5.6L IS
2014 will see the replacement of the Canon EF 100-400 f/4.5-5.6L IS, and we should see some new new patents showing new optical formulas for its replacement. Below is a patent for an EF 70-400 f/4.5-5.6L IS.
Description and self-interpretation of the patent literature
- February 4, 2014
- Canon Patents
- Follow on our forum
2014 will see the replacement of the Canon EF 100-400 f/4.5-5.6L IS, and we should see some new new patents showing new optical formulas for its replacement. Below is a patent for an EF 70-400 f/4.5-5.6L IS.
Description and self-interpretation of the patent literature
- Patent Publication No. 2014-21256,2014-21257
- Publication date 2014.2.3
- Filing date 2012.7.18
- Example 2
- Zoom ratio 5.45
- Focal length f = 71.33-144.71-388.95mm
- Fno. 4.63-4.84-5.83
- Half angle ω = 16.87-8.50-3.18 °
- Image height Y = 21.64
- 240.00-284.68-303.83mm overall length of the lens
- BF 75.92-79.30-95.93mm
- 6-group zoom of positive and negative positive and negative positive and negative
- (Part of the fourth group) anti-vibration
- Rear Focus (Group 6)
nnInn
Joined: Mar 2006
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Canon filed a patent for a 70-400 f/4.5-5.6L IS
I had been eyeing the 100-400, think I'll hold out for this one.
http://www.canonrumors.com/2014/02/p...0-f4-5-5-6l-is
I had been eyeing the 100-400, think I'll hold out for this one.
http://www.canonrumors.com/2014/02/p...0-f4-5-5-6l-is
I Shoot with a Camera
Joined: Oct 2001
Posts: 23,087
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From: Vancouver BC
My first Avatar....
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From: NJ
Ex-OEM King
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From: Minnesnowta
That said, I basically stole my 24-105 when I bought it. Got a deal on buying it and a 50 1.4 for $700.
My first Avatar....
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From: NJ
Ex-OEM King
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From: Minnesnowta
Yep, bought both lenses used off of POTN for $700. I didn't even negotiate, that was the advertised price and I took it within 10 minutes of the posting thinking that at worst I could turn around and sell for a ~$300 profit. I ended up liking both and kept them but whatever.
Flawless condition on both lenses.
Flawless condition on both lenses.
My first Avatar....
Joined: May 2006
Posts: 33,230
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From: NJ
Yep, bought both lenses used off of POTN for $700. I didn't even negotiate, that was the advertised price and I took it within 10 minutes of the posting thinking that at worst I could turn around and sell for a ~$300 profit. I ended up liking both and kept them but whatever.
Flawless condition on both lenses.
Flawless condition on both lenses.
nnInn
Joined: Mar 2006
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The 24-105 is a lens that Canon uses to bundle with cameras for kits. Most break up the kit to sell that hot camera at release, leaving the lens. Price is going to fall.
My first Avatar....
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From: NJ
Yep. The market is really saturated with these right now. Prices are around 575 - 650 for basically new lenses from kits.
Earth-bound misfit
Joined: Mar 2006
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I know, Jeff. I bought the second one as a white box. It was still in the neighborhood of $1K. And their lens prices have gone up considerably, so I hoped it still had a little more value than that.
Earth-bound misfit
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It would be easier to decide about some of these things if I knew whether I'd ever start the business up again.
Ex-OEM King
Joined: Dec 2013
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From: Minnesnowta
The only other things I'm really thinking of selling are the 40D and one of the 7Ds. And maybe the EF-S mount 60mm macro, since I have the 100mm that works on the full frame. I'm having trouble letting go, though.
It would be easier to decide about some of these things if I knew whether I'd ever start the business up again.
It would be easier to decide about some of these things if I knew whether I'd ever start the business up again.
Did you previously do wedding work or what did you do?
Ex-OEM King
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From: Minnesnowta
Moderator
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The only other things I'm really thinking of selling are the 40D and one of the 7Ds. And maybe the EF-S mount 60mm macro, since I have the 100mm that works on the full frame. I'm having trouble letting go, though.
It would be easier to decide about some of these things if I knew whether I'd ever start the business up again.
It would be easier to decide about some of these things if I knew whether I'd ever start the business up again.
Needs more Lemon Pledge
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From: Phoenix, AZ
2014 Jeep SRT
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From: Upstate NY
Any MF lens enthusiasts in here? Added the Rokinon 85/1.4 to my collection recently, and it's been a love/hate relationship. But damn...when it's on, it's on....the lens is pretty amazing considering the price tag.
its a good lens for the price, but its one most failed lenses out in the market right now.