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derekkite · 02-08-2012, 06:31 PM

Originally posted by Mistral75

The diameter of the front lens of a 560mm f/5.6 lens is necessarily bigger than or at least equal to 100mm.

560 5.6 is close to a 300 2.8 with a doubler. The front element would be about the same I would think that most 300 2.8's have.

opiet70 · 02-08-2012, 06:34 PM

Originally posted by eurostar

They would sell not more than a hundred in the world.

I'd buy one

RXrenesis8 · 02-08-2012, 06:57 PM

Pretty sure the hood on the 560mm is extended in the product photo:

**crewl1** · 02-08-2012, 07:02 PM

Good eye. Wonder why it needs an alignment dot. Maybe it is removable too?

**jpzk** · 02-08-2012, 07:26 PM

Originally posted by eurostar

They would sell not more than a hundred in the world.

Are you absolutely sure of that?

JP

**jpzk** · 02-08-2012, 07:27 PM

Originally posted by RXrenesis8

Pretty sure the hood on the 560mm is extended in the product photo:

Thanks for answering one of my previous questions, RXrenesis !

JP

cmohr · 02-08-2012, 09:05 PM

I think people will find supply will be the problem, so many will be looking for one, that it will be a wait to get them.

I think your right about that lens hood sliding out like that.

For a 560mmm to be 5.6 front element would have to be at least 100mm or so, using normal lens dynamics.

Veryy very interested to see what the actual price is going to be.

derekkite · 02-08-2012, 09:30 PM

I was looking at it wondering how it worked. It almost looks like there is an element at the front. The inside rim doesn't look like the inside rim of a hood. A collapsible lens that retracts 4-5"? Very hard to tell. You can see the notches for a threaded ring that holds an element in place. The marks don't make sense for a hood.

m8o · 02-08-2012, 09:30 PM

In the mean time, Sony just announced a 500mm f/4 (and they're finally going Full-Frame! ... well, maybe Pentax will use that sensor too

)

dgaies · 02-08-2012, 09:33 PM

Originally posted by m8o

In the mean time, Sony just announced a 500mm f/4 (and they're finally going Full-Frame! ... well, maybe Pentax will use that sensor too

)

Did I miss something?

m8o · 02-08-2012, 09:40 PM

Originally posted by dgaies

Did I miss something?

Oohh. Shows how much I know! I didn't realize they already has some FF. DP Review's "finally" was referring to the lens, not the camera announced at the same time.

derekkite · 02-08-2012, 09:44 PM

Two ring notches and the reflection of what seems to be an element.

cmohr · 02-08-2012, 09:49 PM

Hmmm, could be???, maybe just a stopper for where the hood slides back to?? We'll all know soon enough I think, .... But its fun to speculate

Chex · 02-08-2012, 10:21 PM

Originally posted by jpzk

Hidden content may not be quoted

Looks like it could just be the AF/MF switch ???

I am just really guessing here.

JP

Why would you need a AF/MF switch on the lens, when the bodies all have MF/AF/CF switches? Honestly I would be a little surprised if it did end up actually being Screw Driven now days, considering the speed disadvantage vs DC/SDM motors (dependent on focus throw I guess).. But reliability would be there at least! As for WR, that could be a MAJOR selling feature I hope they don't drop the ball on.. Sigma/Tamron lenses are not sealed.. so making the DA 560 a WR would give them such a distinct advantage in the long Tele market.

ElJamoquio · 02-08-2012, 10:33 PM

You wouldn't think you'd need it, especially with camera to lens communication these days, but a lot of lenses still have an AF/MF switch, including the 300 f/4. At a minimum it's nice for catch-in-focus.

02-08-2012, 09:40 PM	#176
m8o Veteran Member Join Date: Jul 2007 Location: 40°-55'-44" N / 73°-24'-07" W [on LI] Photos: Gallery \| Albums Posts: 3,092	Originally posted by dgaies Did I miss something? Oohh. Shows how much I know! I didn't realize they already has some FF. DP Review's "finally" was referring to the lens, not the camera announced at the same time. Last edited by m8o; 02-08-2012 at 09:47 PM.

02-08-2012, 09:44 PM	#177
derekkite Pentaxian Join Date: Sep 2011 Location: Nelson B.C. Posts: 3,782	Two ring notches and the reflection of what seems to be an element. Attached Images

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02-08-2012, 06:31 PM	#166
derekkite Pentaxian Join Date: Sep 2011 Location: Nelson B.C. Posts: 3,782	Originally posted by Mistral75 The diameter of the front lens of a 560mm f/5.6 lens is necessarily bigger than or at least equal to 100mm. 560 5.6 is close to a 300 2.8 with a doubler. The front element would be about the same I would think that most 300 2.8's have.

02-08-2012, 06:34 PM	#167
opiet70 Veteran Member Join Date: Apr 2009 Location: Dallas, TX Photos: Gallery \| Albums Posts: 499	Originally posted by eurostar They would sell not more than a hundred in the world. I'd buy one

02-08-2012, 06:57 PM	#168
RXrenesis8 Veteran Member Join Date: Jan 2011 Location: Orlando, FL (USA) Photos: Gallery \| Albums Posts: 523	Pretty sure the hood on the 560mm is extended in the product photo:

02-08-2012, 07:02 PM	#169
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807	Good eye. Wonder why it needs an alignment dot. Maybe it is removable too?

02-08-2012, 07:26 PM	#170
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by eurostar They would sell not more than a hundred in the world. Are you absolutely sure of that? JP

02-08-2012, 07:27 PM	#171
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by RXrenesis8 Pretty sure the hood on the 560mm is extended in the product photo: Thanks for answering one of my previous questions, RXrenesis ! JP

02-08-2012, 09:05 PM	#172
cmohr Pentaxian Join Date: Apr 2011 Location: Brisbane. Australia Photos: Gallery Posts: 1,824	I think people will find supply will be the problem, so many will be looking for one, that it will be a wait to get them. I think your right about that lens hood sliding out like that. For a 560mmm to be 5.6 front element would have to be at least 100mm or so, using normal lens dynamics. Veryy very interested to see what the actual price is going to be.

02-08-2012, 09:30 PM	#173
derekkite Pentaxian Join Date: Sep 2011 Location: Nelson B.C. Posts: 3,782	I was looking at it wondering how it worked. It almost looks like there is an element at the front. The inside rim doesn't look like the inside rim of a hood. A collapsible lens that retracts 4-5"? Very hard to tell. You can see the notches for a threaded ring that holds an element in place. The marks don't make sense for a hood.

02-08-2012, 09:30 PM	#174
m8o Veteran Member Join Date: Jul 2007 Location: 40°-55'-44" N / 73°-24'-07" W [on LI] Photos: Gallery \| Albums Posts: 3,092	In the mean time, Sony just announced a 500mm f/4 (and they're finally going Full-Frame! ... well, maybe Pentax will use that sensor too )

02-08-2012, 09:33 PM	#175
dgaies Veteran Member Join Date: Oct 2009 Location: Maryland / Washington DC Posts: 3,917	Originally posted by m8o In the mean time, Sony just announced a 500mm f/4 (and they're finally going Full-Frame! ... well, maybe Pentax will use that sensor too ) Did I miss something?

02-08-2012, 09:49 PM	#178
cmohr Pentaxian Join Date: Apr 2011 Location: Brisbane. Australia Photos: Gallery Posts: 1,824	Hmmm, could be???, maybe just a stopper for where the hood slides back to?? We'll all know soon enough I think, .... But its fun to speculate

02-08-2012, 10:21 PM	#179
Chex Veteran Member Join Date: Feb 2011 Location: The 'Stoke, British Columbia Photos: Gallery Posts: 1,678	Originally posted by jpzk Hidden content may not be quoted Looks like it could just be the AF/MF switch ??? I am just really guessing here. JP Why would you need a AF/MF switch on the lens, when the bodies all have MF/AF/CF switches? Honestly I would be a little surprised if it did end up actually being Screw Driven now days, considering the speed disadvantage vs DC/SDM motors (dependent on focus throw I guess).. But reliability would be there at least! As for WR, that could be a MAJOR selling feature I hope they don't drop the ball on.. Sigma/Tamron lenses are not sealed.. so making the DA 560 a WR would give them such a distinct advantage in the long Tele market.

02-08-2012, 10:33 PM	#180
ElJamoquio Veteran Member Join Date: Feb 2011 Posts: 4,873 Original Poster	You wouldn't think you'd need it, especially with camera to lens communication these days, but a lot of lenses still have an AF/MF switch, including the 300 f/4. At a minimum it's nice for catch-in-focus.

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