Pentax 560mm ?

GordonZA · 02-24-2012, 11:27 AM

A bit of fun speculation for you all..
If you look carefully at the photos of the sample lens where the DA 560 F5.6 is you will notice some tape to hide additional lettering...
What if this is actually a super zoom?

Maybe it's actually a DA 560 F5.6 - 800 F8.0..... With a push-pull type construction similar to the Canon 100-400mm... That would make this a "cheap" super zoom that would be completely unique and different?

Note that the name of the lens given on the Pentax Japan site is tentative... Ie not yet final...

Just some fun for you all....

Last edited by GordonZA; 02-24-2012 at 12:06 PM.

Vylen · 02-24-2012, 02:54 PM

Originally posted by GordonZA

A bit of fun speculation for you all..
If you look carefully at the photos of the sample lens where the DA 560 F5.6 is you will notice some tape to hide additional lettering...
What if this is actually a super zoom?

Maybe it's actually a DA 560 F5.6 - 800 F8.0..... With a push-pull type construction similar to the Canon 100-400mm... That would make this a "cheap" super zoom that would be completely unique and different?

Note that the name of the lens given on the Pentax Japan site is tentative... Ie not yet final...

Just some fun for you all....

Nope, because this is telephoto prime lens as listed in the K-mount lens roadmap.

HawaiianOnline · 02-24-2012, 03:03 PM

I just want to know how much this thing will be and when will we see the sample photos from it....

GordonZA · 02-24-2012, 09:04 PM

Originally posted by Vylen

Nope, because this is telephoto prime lens as listed in the K-mount lens roadmap.

All specifications and names are tentative and subject to change without notice...

Tonto · 02-24-2012, 11:10 PM

Quick question related to how TC affect optical properties of lenses.
Lets say hypothetically a lens is sharpest at F8 and we add a 1.4 TC to a 5.6 lens.
Disregarding the sharpness loss of adding glass is that lens now at optimum aperture?
Or would it be sharpest being at F8 and THEN adding the TC?
(just one answer thanks to keep the thread on topic)

ogl · 02-25-2012, 12:28 AM

Originally posted by GordonZA

All specifications and names are tentative and subject to change without notice...

But not too much. 560 mm and f/5.6 are real. IMO.

nicolas1970i · 02-25-2012, 02:39 AM

Originally posted by Tonto

Quick question related to how TC affect optical properties of lenses.
Lets say hypothetically a lens is sharpest at F8 and we add a 1.4 TC to a 5.6 lens.
Disregarding the sharpness loss of adding glass is that lens now at optimum aperture?
Or would it be sharpest being at F8 and THEN adding the TC?
(just one answer thanks to keep the thread on topic)

I believe the TC is just a magnifier, so the TC + lens combination would be at its sharpest at the same aperture as the lens itself (effective aperture would be that of the lens multiplied by the magniffying factor of the TC: if the lens is sharpest at f/8, a 1.4x TC + lens would be sharpest at the effective aperure of f/11).

Tonto · 02-25-2012, 04:00 AM

Originally posted by nicolas1970i

I believe the TC is just a magnifier, so the TC + lens combination would be at its sharpest at the same aperture as the lens itself (effective aperture would be that of the lens multiplied by the magniffying factor of the TC: if the lens is sharpest at f/8, a 1.4x TC + lens would be sharpest at the effective aperure of f/11).

Got it, makes sense.

goubejp · 02-25-2012, 04:20 AM

Originally posted by GordonZA

A bit of fun speculation for you all..
If you look carefully at the photos of the sample lens where the DA 560 F5.6 is you will notice some tape to hide additional lettering...
What if this is actually a super zoom?

Maybe it's actually a DA 560 F5.6 - 800 F8.0..... With a push-pull type construction similar to the Canon 100-400mm... That would make this a "cheap" super zoom that would be completely unique and different?

Note that the name of the lens given on the Pentax Japan site is tentative... Ie not yet final...

Just some fun for you all....

I think that the tape is here to hide the AF system; according to the interview I'm not sure that the AF system is definitvely choosen

GordonZA · 02-25-2012, 06:20 AM

One thing that might make it a zoom is the expanding body?

Yes to the 560mm F5.6 but maybe also a zoom too, hence hiding the extra lettering...

That would also explain that extra locking screw... To keep it locked for transport... Unlock it and you can slid it in and out for zoom, maybe going up to an 800mm or 900mm ??

That would make this a completely unique super tele zoom that is affordable....

Nice to dream.... Whatever its final specs I hope I will be able to use it for birds....

vicentesagredo · 02-25-2012, 07:31 AM

so now this lens just became an 560-900mm f5.6 through its entire range?
j/k :P

Mehlsack · 02-25-2012, 07:33 AM

far too innovative, dont think that it will be something like that.

There were some hinds that it is in fact not even a "real" telephoto lens, rather then a "redesign" telescope. Well one way to be unique

I think it all depends on the optical capabilities of this lens. I better should be very impressive, or very cheap.

demp10 · 02-25-2012, 07:39 AM

Originally posted by vicentesagredo

so now this lens just became an 560-900mm f5.6 through its entire range?
j/k :P

To be F5.6 at 900mm the front element will have to be at least 160mm to match the iris. From the pictures is more like 100mm which is what needed for a 560mm at F5.6.

Frogfish · 02-25-2012, 07:51 AM

Originally posted by Mehlsack

far too innovative, dont think that it will be something like that.

There were some hints that it is in fact not even a "real" telephoto lens, rather then a "redesign" telescope. Well one way to be unique

I think it all depends on the optical capabilities of this lens. I better should be very impressive, or very cheap.

Anyone into digiscoping can tell you there are some fantastic ED scopes giving superb, sharp and CA/PF free photographs and that are fully WR. If it's anything like them I'll be a happy bunny as I was on the verge of buying one.

Mehlsack · 02-25-2012, 08:12 AM

I dont doubt that!

But i think most really good scopes are absurdly expensive and most of them are a "bit" bulky...

I am really looking forward for this lens, but i "fear" that even with a "good" optical performance it might get "out-played" by he Sigma 50-500 which is optical ok, its a huge zoom, its 1 stop slower and it is cheaper. The "collapsed" size cant be taken into consideration right now, because we just dont know how big/small the 560mm is going to become(if it will be collapsable etc.) and maybe it will be WR !

But i think it is wonderfull to see that Pentax decided to build a telephoto lens and maybe (if the 560 is no DA*) they might build a "better" version.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DA 50mm, DA 560mm, D-FA 645 90mm to be revealed at CP+	Adam	Pentax SLR Lens Discussion	56	02-10-2012 08:56 AM
Leitz 560mm f/6.8 Telyt-R - first shots and impression	Piotr	Pentax SLR Lens Discussion	1	05-11-2009 02:42 AM

02-24-2012, 11:27 AM	#316
GordonZA Veteran Member Join Date: Jan 2010 Location: Planet Earth Photos: Albums Posts: 351	A bit of fun speculation for you all.. If you look carefully at the photos of the sample lens where the DA 560 F5.6 is you will notice some tape to hide additional lettering... What if this is actually a super zoom? Maybe it's actually a DA 560 F5.6 - 800 F8.0..... With a push-pull type construction similar to the Canon 100-400mm... That would make this a "cheap" super zoom that would be completely unique and different? Note that the name of the lens given on the Pentax Japan site is tentative... Ie not yet final... Just some fun for you all.... Last edited by GordonZA; 02-24-2012 at 12:06 PM.

02-24-2012, 02:54 PM	#317
Vylen Veteran Member Join Date: Dec 2008 Location: Sydney, Australia Photos: Gallery Posts: 1,262	Originally posted by GordonZA A bit of fun speculation for you all.. If you look carefully at the photos of the sample lens where the DA 560 F5.6 is you will notice some tape to hide additional lettering... What if this is actually a super zoom? Maybe it's actually a DA 560 F5.6 - 800 F8.0..... With a push-pull type construction similar to the Canon 100-400mm... That would make this a "cheap" super zoom that would be completely unique and different? Note that the name of the lens given on the Pentax Japan site is tentative... Ie not yet final... Just some fun for you all.... Nope, because this is telephoto prime lens as listed in the K-mount lens roadmap.

02-24-2012, 03:03 PM	#318
HawaiianOnline Veteran Member Join Date: Jan 2007 Location: Hawaii Posts: 613	I just want to know how much this thing will be and when will we see the sample photos from it....

02-24-2012, 09:04 PM	#319
GordonZA Veteran Member Join Date: Jan 2010 Location: Planet Earth Photos: Albums Posts: 351	Originally posted by Vylen Nope, because this is telephoto prime lens as listed in the K-mount lens roadmap. All specifications and names are tentative and subject to change without notice...

02-24-2012, 11:10 PM	#320
Tonto Inactive Account Join Date: Apr 2010 Location: Wellington Posts: 969	Quick question related to how TC affect optical properties of lenses. Lets say hypothetically a lens is sharpest at F8 and we add a 1.4 TC to a 5.6 lens. Disregarding the sharpness loss of adding glass is that lens now at optimum aperture? Or would it be sharpest being at F8 and THEN adding the TC? (just one answer thanks to keep the thread on topic)

02-25-2012, 12:28 AM	#321
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by GordonZA All specifications and names are tentative and subject to change without notice... But not too much. 560 mm and f/5.6 are real. IMO.

02-25-2012, 02:39 AM	#322
nicolas1970i Senior Member Join Date: Jun 2008 Location: Paris Posts: 180	Originally posted by Tonto Quick question related to how TC affect optical properties of lenses. Lets say hypothetically a lens is sharpest at F8 and we add a 1.4 TC to a 5.6 lens. Disregarding the sharpness loss of adding glass is that lens now at optimum aperture? Or would it be sharpest being at F8 and THEN adding the TC? (just one answer thanks to keep the thread on topic) I believe the TC is just a magnifier, so the TC + lens combination would be at its sharpest at the same aperture as the lens itself (effective aperture would be that of the lens multiplied by the magniffying factor of the TC: if the lens is sharpest at f/8, a 1.4x TC + lens would be sharpest at the effective aperure of f/11).

02-25-2012, 04:00 AM	#323
Tonto Inactive Account Join Date: Apr 2010 Location: Wellington Posts: 969	Originally posted by nicolas1970i I believe the TC is just a magnifier, so the TC + lens combination would be at its sharpest at the same aperture as the lens itself (effective aperture would be that of the lens multiplied by the magniffying factor of the TC: if the lens is sharpest at f/8, a 1.4x TC + lens would be sharpest at the effective aperure of f/11). Got it, makes sense.

02-25-2012, 04:20 AM	#324
goubejp Veteran Member Join Date: Oct 2007 Location: France Photos: Albums Posts: 804	Originally posted by GordonZA A bit of fun speculation for you all.. If you look carefully at the photos of the sample lens where the DA 560 F5.6 is you will notice some tape to hide additional lettering... What if this is actually a super zoom? Maybe it's actually a DA 560 F5.6 - 800 F8.0..... With a push-pull type construction similar to the Canon 100-400mm... That would make this a "cheap" super zoom that would be completely unique and different? Note that the name of the lens given on the Pentax Japan site is tentative... Ie not yet final... Just some fun for you all.... I think that the tape is here to hide the AF system; according to the interview I'm not sure that the AF system is definitvely choosen

02-25-2012, 06:20 AM	#325
GordonZA Veteran Member Join Date: Jan 2010 Location: Planet Earth Photos: Albums Posts: 351	One thing that might make it a zoom is the expanding body? Yes to the 560mm F5.6 but maybe also a zoom too, hence hiding the extra lettering... That would also explain that extra locking screw... To keep it locked for transport... Unlock it and you can slid it in and out for zoom, maybe going up to an 800mm or 900mm ?? That would make this a completely unique super tele zoom that is affordable.... Nice to dream.... Whatever its final specs I hope I will be able to use it for birds....

02-25-2012, 07:31 AM	#326
vicentesagredo Senior Member Join Date: Mar 2010 Location: Concepcion Posts: 100	so now this lens just became an 560-900mm f5.6 through its entire range? j/k :P

02-25-2012, 07:33 AM	#327
Mehlsack Senior Member Join Date: Sep 2010 Location: Innsbruck Posts: 283	far too innovative, dont think that it will be something like that. There were some hinds that it is in fact not even a "real" telephoto lens, rather then a "redesign" telescope. Well one way to be unique I think it all depends on the optical capabilities of this lens. I better should be very impressive, or very cheap.

02-25-2012, 07:39 AM	#328
demp10 Veteran Member Join Date: Jun 2011 Location: Atlanta Photos: Albums Posts: 602	Originally posted by vicentesagredo so now this lens just became an 560-900mm f5.6 through its entire range? j/k :P To be F5.6 at 900mm the front element will have to be at least 160mm to match the iris. From the pictures is more like 100mm which is what needed for a 560mm at F5.6.

02-25-2012, 07:51 AM	#329
Frogfish Veteran Member Join Date: Dec 2009 Location: Shanghai Posts: 4,490	Originally posted by Mehlsack far too innovative, dont think that it will be something like that. *There were some hints that it is in fact not even a "real" telephoto lens, rather then a "redesign" telescope. Well one way to be unique* I think it all depends on the optical capabilities of this lens. I better should be very impressive, or very cheap. Anyone into digiscoping can tell you there are some fantastic ED scopes giving superb, sharp and CA/PF free photographs and that are fully WR. If it's anything like them I'll be a happy bunny as I was on the verge of buying one.

02-25-2012, 08:12 AM	#330
Mehlsack Senior Member Join Date: Sep 2010 Location: Innsbruck Posts: 283	I dont doubt that! But i think most really good scopes are absurdly expensive and most of them are a "bit" bulky... I am really looking forward for this lens, but i "fear" that even with a "good" optical performance it might get "out-played" by he Sigma 50-500 which is optical ok, its a huge zoom, its 1 stop slower and it is cheaper. The "collapsed" size cant be taken into consideration right now, because we just dont know how big/small the 560mm is going to become(if it will be collapsable etc.) and maybe it will be WR ! But i think it is wonderfull to see that Pentax decided to build a telephoto lens and maybe (if the 560 is no DA*) they might build a "better" version.