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02-21-2010, 04:00 AM   #31
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AF 85/1.4 is interesting lens. Very interesting.

02-21-2010, 04:12 AM   #32
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I was disappointed to read elsewhere that a Sigma 180 mm macro lens with Pentax mount was discountinued (last year, I think) while the lens remained in production with other mounts.

A macrophotographer I respect has been using the lens (but not with a Pentax mount) to capture beautiful images.

Also, I've seen an older Sigma 180 mm macro lens mentioned. If anyone knows anything about quality of that older lens — or wants to sell a used Sigma 180 mm macro lens in the future for significantly below retail price, or knows of a reputable retailer who is selling a new or used one — I'd welcome the information.

I understand Tamron has a 180mm macro, but it appears that's not sold with a Pentax mount.
02-21-2010, 06:44 AM   #33
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8-16mm WOW

Now I have long been asking for a 9-16mm from Pentax to match the wide-angle coverage for other cropped-sensor formats and most times someone replies that it would be impossible... Well, guess not. Ever since Olympus had the 7-14mm F4 lens, I wished Pentax would at least match that coverage.

So now that we know it is possible can we have a Pentax DA* 8-16mm F4 please? Otherwise I may have to buy a Sigma

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02-21-2010, 06:57 AM   #34
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SIGMA APO 50-500mm F4.5-6.3 DG OS HSM

This is a 10x high zoom ratio ultra telephoto zoom lens incorporating Sigma’s original Optical Stabilizer function. This lens covers a wide range of focal lengths from 50mm to 500mm ultra telephoto. The OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. For Sony and Pentax mount, the built-in OS function of this lens can be used even if the camera body is equipped with an image sensor shift anti-shake system. As compensation for camera shake is visible in the view finder, the photographer can easily check for accurate focus and ensure there is no subject movement. Four SLD (Special Low Dispersion) glass elements provide excellent correction of color aberration. The Super Multi-Layer Coating reduces flare and ghost and ensures high image quality throughout the entire zoom range. This lens has a maximum magnification ratio of 1:3.1 (at the focal length of 200mm) making it ideal for close-up photography. This lens incorporates HSM (Hyper Sonic Motor), ensuring quiet and high speed AF as well as full-time manual focus capability. The addition of the optional 1.4x EX DG or 2x EX DG APO Tele Converters produce a 70-700mm F6.3-8 or a 100-1000mm F9-12.6 MF zoom lens respectively. This lens is equipped with a Petal-type hood to block out extraneous light. The filter size of this lens is φ95mm and the lens is supplied with a step down ring enabling digital cameras with an APS-C size image sensor to use an φ86mm filter.

【Specification】(For Sigma mount)
Lens Construction
22 Elements in 16 Groups

Maximum Magnification
1:3.1 (f=200mm)

Angle of View
46.8-5.0 degrees

Filter Size
Diameter 95mm

Number of blades
9pcs (Rounded diaphragm)

Lens Hood
Petal-type hood (LH1030-01) supplied

Minimum Aperture (W)
F22

Dimensions
Diameter104.4mm×Length 219mm/4.1in.×8.6in.

Minimum Focusing Distance
50-180cm/19.7-70.9 in.

Weight
1,970g/69.5oz.

【JAN Code】
SIGMA AF
0085126 738563

CANON AF
0085126 738459

SONY AF
0085126 738624

PENTAX AF
0085126 738617

NIKON AF
0085126 738556

【Corresponding AF Mounts】
SIGMA, CANON, NIKON(D),SONY(D), PENTAX

【OPTIONAL ACCESSORIES】
|SIGMA DG UV 95mm
0085126 923785

TS-31(supplied)
0085126 918415

SIGMA DG CIRCULAR PL 95mm
0085126 923891

APO TELE CONVERTER 1.4x EX DG
SIGMA 0085126 824402
CANON 0085126 824273
NIKON 0085126 824556
SONY 0085126 824624

APO TELE CONVERTER 2x EX DG
SIGMA 0085126 876401
CANON 0085126 876272
NIKON 0085126 876555
SONY 0085126 876623

*The Pentax mount Tele Converter cannot be used with this particular lens. *It is not possible to use a Polarizing filter with the step down ring. If you attach a Polarizing filter, you may not be able to remove it from the lens again. *Nikon and Pentax mounts do not have an aperture ring. Some functions may not work depending on the camera model. *For Nikon and Canon mounts, Optical Stabilizer (OS) function will not work with film SLR cameras except Nikon F6 and Canon EOS-1V. *For Pentax and Sony mounts, it is not possible to use the AF and the built-in OS function of this lens when attaching it to film SLR cameras as well as Pentax *ist series and K100D. *When using the OS function of a lens with a camera which incorporates a stabilizer unit, please turn the camera’s stabilizer unit off.



02-21-2010, 07:01 AM   #35
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QuoteOriginally posted by Itai Quote
Now I have long been asking for a 9-16mm from Pentax to match the wide-angle coverage for other cropped-sensor formats and most times someone replies that it would be impossible... Well, guess not. Ever since Olympus had the 7-14mm F4 lens, I wished Pentax would at least match that coverage.

So now that we know it is possible can we have a Pentax DA* 8-16mm F4 please? Otherwise I may have to buy a Sigma

- Itai
Neovoyage | Explore, Experience, Expand your horizons | Travel Photography
I would rather have a FF Pentax DSLR with 12-24mm.

This is the first ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors. This lens has an equivalent angle of view of a 12-24mm lens when used on digital cameras with an APS-C size image sensor. The wide-angle of view from 121.2 degrees* produces striking images with exaggerated perspective, enabling photographers to emphasize the subject. Four FLD (“F” Low Dispersion) glass elements, which have the performance equal to fluorite glass, compensate for color aberration. One hybrid aspherical lens and two glass mold elements give excellent correction for distortion and astigmatism. Incorporating an inner focusing system, the lens produces high definition images throughout the entire zoom range. The Super Multi-Layer Coating reduces flare and ghosting while superior peripheral brightness ensures high contrast images throughout the entire zoom range. This lens incorporates HSM (Hyper Sonic Motor), ensuring quiet and high speed AF as well as full-time manual focus capability. It has a minimum focusing distance of 24cm throughout the entire zoom range which allows photographers to emphasize the subject by creating exaggerated perspectives. This lens has a compact construction with an overall length of 105.7mm and a maximum diameter of 75mm.
*The angle of view varies depending on which camera the lens is mounted on.
Lens Construction
15 Elements in 11 Groups

Minimum Focusing Distance
24cm / 9.4in.

Angle of View
114.5-75.7 degrees

Maximum Magnification
1:7.8

Number of blades
7pcs

Dimensions
Diameter 75mm×Length 105.7mm /3.0in×4.2in.

Minimum Aperture (Wide)
F22

Weight
545g/19.2oz.

【Corresponding AF Mounts】
SIGMA, SONY(D), NIKON(D),PENTAX, CANON

* Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.
* AF will not function with Pentax ist* series and K100D DSLR cameras that do not support HSM. * Filters cannot be attached to this lens.


Last edited by jogiba; 02-21-2010 at 07:07 AM.
02-21-2010, 07:49 AM   #36
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8-16mm is what type? fish?
02-21-2010, 07:51 AM   #37
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QuoteOriginally posted by WerTicus Quote
8-16mm is what type? fish?
No, rectilinear, and that's why it's so promising to me............built-in hood is very nice but ouch on no filters
02-21-2010, 08:00 AM   #38
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12-24mm FF version HD video @12mm

[vimeo]http://vimeo.com/moogaloop.swf?clip_id=4964539&amp[/vimeo]

02-21-2010, 08:03 AM   #39
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hrmm 20% wider than the 10mm.

is the f3.5 hsm 10-20mm really worse than the old model? Is there is a comparison review somewhere?
02-21-2010, 08:40 AM   #40
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QuoteOriginally posted by KjetilH Quote
Hopefully, the 85/1.4 is priced to be a good alternative to Canon and Nikons 85/1.8 lenses. As it features HSM and a larger aperture, it may not, but I do still hope.
I hope this too. Recently I have started to think about leaving Pentax and going back to Canon, simply because I couldn't find acceptable replacement (in terms of money and optical quality) for my belowed canon 85 f1.8 USM. Well, I can say now that Sigma gave me the hope and a lot to thing about. It is really a shame that Pentax never came to idea to reproduce another 85mm lense based on the great optical design of the old manual lenses. I find this the biggest Pentax flaw in current lense offer. I know that there is 77mm f 1.8, but it costs a fortune. And, there is no USM/SDM too.
02-21-2010, 08:40 AM   #41
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Where's the damn 300-800 f5.6?
02-21-2010, 08:59 AM   #42
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QuoteOriginally posted by pxpaulx Quote
I believe the advantage to having the OS at longer focal lengths is that the image it stabilized prior to shooting, while looking through the viewfinder. I think that advantage alone would be very beneficial at 500mm!
Thanks for the info.
So, that means that the new Bigma should produce "better" pics than the older counterpart, right?
How about the IQ of the 150-500mm itself? Are you satisfied with it?

JP
02-21-2010, 09:37 AM   #43
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QuoteOriginally posted by WerTicus Quote
hrmm 20% wider than the 10mm.

is the f3.5 hsm 10-20mm really worse than the old model? Is there is a comparison review somewhere?
Check out the reviews for the Sigma 10-20mm f/4-5.6 and the Sigma 10-20mm f/3.5 at slrgear.com:

Sigma Lens: Zooms - SLRgear.com!

If it were a choice of these two lenses only and if it were my money, I'd opt for the less-expensive (by quite a margin) older and slower version. But I'd wait to see what kind of reviews the new 8-16 gets - or how much it costs.
02-21-2010, 10:10 AM   #44
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so an with the Image stabilization in the lens you have to turn off the cameras Shake reduction, Whats the point in selling stabilized lenses??? Why pay for something we already have?
02-21-2010, 10:37 AM   #45
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I want that 8-16..
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