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08-23-2012, 04:25 PM   #766
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Time we got a break down here

08-24-2012, 03:57 AM   #767
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QuoteOriginally posted by Frogfish Quote
Are you saying that it's now possible to build superb telephoto lenses without very high quality and ED glass (which even all the good telescopes use) - I wonder if Nikon/Canon know this instead of charging many thousands for their monsters
Certainly not "superb" lenses. It depends on the price you're aiming for. You get what you pay for, so to say.
Remember those 500/8 lenses (not with mirrors) from the 70ies? They still go for <100$ on eBay and aren't too bad.

And a 600/4 or 500/4 does have a larger front element and a lot of internal glass, too, due to IS. You surely can save some money by making a lens f/5.6, non-IS and with simpler design. All that doesn't have to lessen the quality.
08-24-2012, 04:03 AM - 1 Like   #768
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I'm waiting to put this lens on a Q.
Note to self: buy a Q.
08-24-2012, 06:37 AM   #769
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QuoteOriginally posted by LamyTax Quote
Certainly not "superb" lenses. It depends on the price you're aiming for. You get what you pay for, so to say.
Remember those 500/8 lenses (not with mirrors) from the 70ies? They still go for <100$ on eBay and aren't too bad.

And a 600/4 or 500/4 does have a larger front element and a lot of internal glass, too, due to IS. You surely can save some money by making a lens f/5.6, non-IS and with simpler design. All that doesn't have to lessen the quality.
The Sigma 500/4.5 doesn't have IS and is still rather large

I assume the Pentax will be lighter than the Sigma and to make it a best seller I think it will have to be in the US$2,000 - 2,500 range. Not the quality of the Sigma, no IS of course, must have ED glass - but WR is something the Sigma lacks and would be a feather in the Pentax cap for very little outlay.


Last edited by Frogfish; 08-24-2012 at 07:31 AM.
08-24-2012, 06:51 AM   #770
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QuoteOriginally posted by Frogfish Quote
The Sigma 500/4.5 doesn't have IS and is still rather large

I assume the Pentax will be lighter than the Sigma because to make it a best seller I think it will have to be in the US$2,000 - 2,500 range. Not the quality of the Sigma, no IS of course, must have ED glass - but WR is something the Sigma lacks and would be a feather in the Pentax cap for very little outlay.
The Sigma has a front element ~10% larger in diameter than a proposed Pentax 560/5.6. Also, there were rumours that it has 540mm instead of 560, making the front element even smaller. That's a huge deal both for weight and price. From what I've heard, they want it around 2500$, maybe a little more. I assume a high demand initially, so I wouldn't expect the street price to be much lower.

What matters even more to me is this: such a lens is lightweight, compared to other solutions. It might be useable handheld. Forget that with a 600/4 .
Lightweight outdoor photo gear is great for nature photographers (Pentax certainly isn't aiming for sport professionals ).

ED glass would be neat, of course. Less than a month until the world finds out .
08-26-2012, 12:27 PM   #771
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QuoteOriginally posted by coreyhkh Quote
I have given up on this lens and I have my eyes set on a canon 500 f4. Still keeping my Pentax though its weather sealing is hard to ignore.
As a 500L owner, I can say you would not regret purchasing one. The weight is the only real issue, but I have no problems handholding it for a shooting session though I can certainly feel it afterwards!
08-27-2012, 08:05 AM   #772
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QuoteOriginally posted by pingflood Quote
As a 500L owner, I can say you would not regret purchasing one. The weight is the only real issue, but I have no problems handholding it for a shooting session though I can certainly feel it afterwards!
Now if Pentax had a 560/5.6 that's lightweight and good, would you consider it?
08-27-2012, 08:49 AM   #773
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QuoteOriginally posted by LamyTax Quote
Now if Pentax had a 560/5.6 that's lightweight and good, would you consider it?
Hell yeah.

08-27-2012, 09:04 AM   #774
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QuoteOriginally posted by LamyTax Quote
Now if Pentax had a 560/5.6 that's lightweight and good, would you consider it?
Top of my shopping list
08-31-2012, 09:17 AM   #775
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QuoteOriginally posted by RXrenesis8 Quote
As predicted by Falk Lumo nearly a year ago, I'm gonna go with ~$2000 MSRP
My guess is $4000+
08-31-2012, 09:19 AM   #776
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QuoteOriginally posted by audiobomber Quote
Why does it end up longer than an FA*600mm f/4 with a shorter FL and smaller aperture?
.
...because it is a true telephoto lens. Ie it is 560mm long...
08-31-2012, 09:42 AM   #777
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QuoteOriginally posted by Pål Jensen Quote
...because it is a true telephoto lens. Ie it is 560mm long...
No, a true telephoto lens is less long than the focal length.

Telephoto lens - Wikipedia, the free encyclopedia
08-31-2012, 09:44 AM   #778
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QuoteOriginally posted by ElJamoquio Quote
No, a true telephoto lens is less long than the focal length.

Telephoto lens - Wikipedia, the free encyclopedia
Exactly which is why the estimates for this have been significantly less than $4000. I'll guess 2500-2700 with instant rebate pricing in the 22-2300 range maybe
08-31-2012, 10:07 AM   #779
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QuoteOriginally posted by ElJamoquio Quote
No, a true telephoto lens is less long than the focal length.

Telephoto lens - Wikipedia, the free encyclopedia
I probably meant a long-focus lens...
08-31-2012, 10:21 AM   #780
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QuoteOriginally posted by Pål Jensen Quote
I probably meant a long-focus lens...
essentially this looks to be a telescope type design, 2-2500 would be in the right zone for that given a telescope of this type would be about half that price but simpler to build with no af or electronics to concern you
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