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JinDesu · 09-10-2012, 03:08 PM

DC motor, according to the PF page.

Mistral75 · 09-10-2012, 03:53 PM

And 3,040 g (6.70 lb)

Pentax announces 18-270mm F3.5-6.3 ED SDM and HD 560mm F5.6 ED AW: Digital Photography Review

**jpzk** · 09-10-2012, 03:53 PM

Wondering: will I spend $7000 for the Pentax 560/5.6 or get a proven lens such as the Sigma 500/4.5 for much less ??

This better be a feat of technology and with much higher IQ than the "other" lens.

I think that comparisons will follow as soon as this lens becomes available and I will be able to decide whether my hunch (to buy the Sigma 500/4.5, that is) was ... "just a hunch".

Really ?? $7000 ?!!

JP

**Pål Jensen** · 09-10-2012, 03:59 PM

Originally posted by jpzk

Wondering: will I spend $7000 for the Pentax 560/5.6 or get a proven lens such as the Sigma 500/4.5 for much less ??

This better be a feat of technology and with much higher IQ than the "other" lens.

I think that comparisons will follow as soon as this lens becomes available and I will be able to decide whether my hunch (to buy the Sigma 500/4.5, that is) was ... "just a hunch".

Really ?? $7000 ?!!

JP

Actually, $7000 isn't that much for a 560mm. Super Telephotos are horribly expensive and thats why few people own them.

**Pål Jensen** · 09-10-2012, 04:00 PM

Originally posted by Mistral75

And 3,040 g (6.70 lb)

That is great. It is less than half the weight of the FA* 600/4. I rather have the 560mm....

**jpzk** · 09-10-2012, 04:08 PM

Just checking the sizes for both lenses:

Pentax 560/4.5

3040 g (6.70 lb) weight
130 mm (5.12") diameter
522 mm (20.55") length
112 mm filter size

Sigma 500/4.5

3150 g (6.94 lb) weight
123 mm (4.84") diameter
350 mm (13.78") length

Almost the same weight ( a very important aspect of carrying such a large lens "out in the field") but the Pentax is definitely a lot longer (by almost 7 inches !!)

And it is "white" ... just wondering (again) ...

Hopefully, the price will drop a lot after the initial release.

JP

**jpzk** · 09-10-2012, 04:11 PM

Originally posted by Pål Jensen

That is great. It is less than half the weight of the FA* 600/4. I rather have the 560mm....

Then perhaps you will get this lens.

I have never tried a 600/4, must be a monster to carry around!?

As for me: perhaps wait and see reviews and price drop, then to consider.Tough competition to the Sigma 500/4.5.

JP

ElJamoquio · 09-10-2012, 04:16 PM

Originally posted by Pål Jensen

Actually, $7000 isn't that much for a 560mm. Super Telephotos are horribly expensive and thats why few people own them.

It is quite high for any lens with a 100mm front element.

**jpzk** · 09-10-2012, 04:38 PM

Originally posted by ElJamoquio

It is quite high for any lens with a 100mm front element.

I was wondering about what this has to do with the price?

Also: if this is the "telescopic" type of lens, what about the minimum focusing distance? It must be there somewhere, but I didn't come acroos it.

JP

Vylen · 09-10-2012, 04:39 PM

Originally posted by jpzk

I was wondering about what this has to do with the price?

Also: if this is the "telescopic" type of lens, what about the minimum focusing distance? It must be there somewhere, but I didn't come acroos it.

JP

Minimum focusing distance of 5.6m... coincidental number? heh

ElJamoquio · 09-10-2012, 04:45 PM

Originally posted by jpzk

I was wondering about what this has to do with the price?

Element-Glass material cost is a function of element^3
Element-Machining, polishing req'd is a funciton of element^2

Etc.

**jpzk** · 09-10-2012, 05:16 PM

Originally posted by ElJamoquio

It is quite high for any lens with a 100mm front element.

Originally posted by Vylen

Minimum focusing distance of 5.6m... coincidental number? heh

Yeah ... quite a long MFD ! The Sigma, for comparison purposes, is 400 cm (4 meters) / 157.5 in !
I keep coming back to the Sigma for comparison purposes only.
It will be very interesting to find out how the Pentax performs in terms of IQ.

Thnaks.

JP

**jpzk** · 09-10-2012, 05:17 PM

Originally posted by ElJamoquio

Element-Glass material cost is a function of element^3
Element-Machining, polishing req'd is a funciton of element^2

Etc.

OK ... thanks again for the info!

JP

froeschle · 09-11-2012, 03:06 AM - **1 Like**

6 elements in 5 groups (+ rear filter, not 7+)

Let me remind you:

price

Quote:

[...] We are talking about a modified scope design and similiarly specced Pentax scopes use 3-4 elements (1 ED) and are just under $2000. It has much fewer lens elements than the more expensive ~10+ element designs with a 100mm front lens.

Anything above $2790 will be disappointing and anything below $1990 will be a positive surprise. My personal guess is around $2500 because of the focus motor, aperture, and possible additional rear lens group working as a field flattener. [...]

LamyTax · 09-11-2012, 03:11 AM

Originally posted by froeschle

6 elements in 5 groups (+ rear filter, not 7+)

Let me remind you:

price

6 elements? So I really misread.

I don't actually understand this lens at all then. Does anyone?

09-11-2012, 03:06 AM - 1 Like	#824
froeschle Veteran Member Join Date: Sep 2007 Location: Germany Photos: Gallery Posts: 552	6 elements in 5 groups (+ rear filter, not 7+) Let me remind you: price Quote: [...] We are talking about a modified scope design and similiarly specced Pentax scopes use 3-4 elements (1 ED) and are just under $2000. It has much fewer lens elements than the more expensive ~10+ element designs with a 100mm front lens. Anything above $2790 will be disappointing and anything below $1990 will be a positive surprise. My personal guess is around $2500 because of the focus motor, aperture, and possible additional rear lens group working as a field flattener. [...] Attached Images

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JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,638	DC motor, according to the PF page.

09-10-2012, 03:53 PM	#812
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09-10-2012, 03:53 PM	#813
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Wondering: will I spend $7000 for the Pentax 560/5.6 or get a proven lens such as the Sigma 500/4.5 for much less ?? This better be a feat of technology and with much higher IQ than the "other" lens. I think that comparisons will follow as soon as this lens becomes available and I will be able to decide whether my hunch (to buy the Sigma 500/4.5, that is) was ... "just a hunch". Really ?? $7000 ?!! JP

09-10-2012, 03:59 PM	#814
Pål Jensen Site Supporter Join Date: Dec 2007 Location: Norway Photos: Albums Posts: 4,371	Originally posted by jpzk Wondering: will I spend $7000 for the Pentax 560/5.6 or get a proven lens such as the Sigma 500/4.5 for much less ?? This better be a feat of technology and with much higher IQ than the "other" lens. I think that comparisons will follow as soon as this lens becomes available and I will be able to decide whether my hunch (to buy the Sigma 500/4.5, that is) was ... "just a hunch". Really ?? $7000 ?!! JP Actually, $7000 isn't that much for a 560mm. Super Telephotos are horribly expensive and thats why few people own them.

09-10-2012, 04:00 PM	#815
Pål Jensen Site Supporter Join Date: Dec 2007 Location: Norway Photos: Albums Posts: 4,371	Originally posted by Mistral75 And 3,040 g (6.70 lb) That is great. It is less than half the weight of the FA* 600/4. I rather have the 560mm....

09-10-2012, 04:08 PM	#816
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Just checking the sizes for both lenses: Pentax 560/4.5 3040 g (6.70 lb) weight 130 mm (5.12") diameter 522 mm (20.55") length 112 mm filter size Sigma 500/4.5 3150 g (6.94 lb) weight 123 mm (4.84") diameter 350 mm (13.78") length Almost the same weight ( a very important aspect of carrying such a large lens "out in the field") but the Pentax is definitely a lot longer (by almost 7 inches !!) And it is "white" ... just wondering (again) ... Hopefully, the price will drop a lot after the initial release. JP

09-10-2012, 04:11 PM	#817
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by Pål Jensen That is great. It is less than half the weight of the FA* 600/4. I rather have the 560mm.... Then perhaps you will get this lens. I have never tried a 600/4, must be a monster to carry around!? As for me: perhaps wait and see reviews and price drop, then to consider.Tough competition to the Sigma 500/4.5. JP

09-10-2012, 04:16 PM	#818
ElJamoquio Veteran Member Join Date: Feb 2011 Posts: 4,873 Original Poster	Originally posted by Pål Jensen Actually, $7000 isn't that much for a 560mm. Super Telephotos are horribly expensive and thats why few people own them. It is quite high for any lens with a 100mm front element.

09-10-2012, 04:38 PM	#819
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by ElJamoquio It is quite high for any lens with a 100mm front element. I was wondering about what this has to do with the price? Also: if this is the "telescopic" type of lens, what about the minimum focusing distance? It must be there somewhere, but I didn't come acroos it. JP

09-10-2012, 04:39 PM	#820
Vylen Veteran Member Join Date: Dec 2008 Location: Sydney, Australia Photos: Gallery Posts: 1,262	Originally posted by jpzk I was wondering about what this has to do with the price? Also: if this is the "telescopic" type of lens, what about the minimum focusing distance? It must be there somewhere, but I didn't come acroos it. JP Minimum focusing distance of 5.6m... coincidental number? heh

09-10-2012, 04:45 PM	#821
ElJamoquio Veteran Member Join Date: Feb 2011 Posts: 4,873 Original Poster	Originally posted by jpzk I was wondering about what this has to do with the price? Element-Glass material cost is a function of element^3 Element-Machining, polishing req'd is a funciton of element^2 Etc.

09-10-2012, 05:16 PM	#822
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by ElJamoquio It is quite high for any lens with a 100mm front element. Originally posted by Vylen Minimum focusing distance of 5.6m... coincidental number? heh Yeah ... quite a long MFD ! The Sigma, for comparison purposes, is 400 cm (4 meters) / 157.5 in ! I keep coming back to the Sigma for comparison purposes only. It will be very interesting to find out how the Pentax performs in terms of IQ. Thnaks. JP

09-10-2012, 05:17 PM	#823
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by ElJamoquio Element-Glass material cost is a function of element^3 Element-Machining, polishing req'd is a funciton of element^2 Etc. OK ... thanks again for the info! JP

09-11-2012, 03:11 AM	#825
LamyTax Veteran Member Join Date: Jul 2012 Posts: 376	Originally posted by froeschle 6 elements in 5 groups (+ rear filter, not 7+) Let me remind you: price 6 elements? So I really misread. I don't actually understand this lens at all then. Does anyone?

Pentax 560mm ?

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