HD PENTAX-D FA 150-450mm F4.5-5.6ED DC AW

thibs · 02-09-2015, 07:31 AM

AFAICT they upload more samples later. At least that was the case with previous zoom releases.

Stop moaning and be patient

PS: I'm eagerly waiting for those two...

Mistral75 · 02-09-2015, 07:52 AM

Originally posted by rawr

True. Looks good edge-to-edge. Hardly any visible softness at the boundaries of the frame.
At least at 180-190mm, and on APS-C.

And at f/8.

derekkite · 02-09-2015, 08:02 AM

Originally posted by Mistral75

And at f/8.

Yes. I want to see wide open at full zoom.

**Digitalis** · 02-09-2015, 08:32 AM

Looking at the flower image reveals some fringing in front of and behind the plane of focus, which is a bit worrisome IMO. The Sigma 100-300mm /f4 doesn't exhibit that kind of abberration due to its apochromatic design.

Originally posted by rawr

it means you can run ISO 100 at f8. But there's a big risk of blur.

Not if you use MLU properly. The tripod collar foot seems to be well placed to help eliminate vibrations, Many CAnon L and Nikkor super telephotos don't have the foot appropriately placed for the FL.

rawr · 02-09-2015, 03:48 PM

Originally posted by flogtv6

samples with K-S2 :

As a FYI, I just figured out that the lens sample images were taken overlooking Battery Point in Hobart (Tasmania).

I knew something looked familiar about that scene.

Vylen · 02-09-2015, 03:58 PM

Originally posted by rawr

As a FYI, I just figured out that the lens sample images were taken overlooking Battery Point in Hobart (Tasmania).

I knew something looked familiar about that scene.

Haha really? I was thinking the place looked like someplace in Australia

Dieseler · 02-10-2015, 07:15 AM

Originally posted by derekkite

Yes. I want to see wide open at full zoom.

Me too.

**Digitalis** · 02-10-2015, 09:09 AM

Originally posted by derekkite

Yes. I want to see wide open at full zoom.

...even the Sigma 100-300mm f/4 APO EX DG struggles with this.

derekkite · 02-10-2015, 09:20 AM

Originally posted by Digitalis

...even the Sigma 100-300mm f/4 APO EX DG struggles with this.

On a continuum. There are long zooms that you start at f8 and smaller to get passable results. My 500 f4.5 Sigma is better at F8; better contrast deeper colors, a more pleasing image all around, but is very nice wide open. In low light I can shoot wide open. Same with the 300 f4 Pentax. 450 f5.6 requires pretty good light to start with, and if you lost half just to get anything, then I'll pass.

**Spodeworld** · 02-10-2015, 09:23 AM

Is there in lens stabilization? Seems like there needs to be for a lens of this length

JinDesu · 02-10-2015, 09:29 AM

Originally posted by derekkite

On a continuum. There are long zooms that you start at f8 and smaller to get passable results. My 500 f4.5 Sigma is better at F8; better contrast deeper colors, a more pleasing image all around, but is very nice wide open. In low light I can shoot wide open. Same with the 300 f4 Pentax. 450 f5.6 requires pretty good light to start with, and if you lost half just to get anything, then I'll pass.

I'd think that the 500 F4.5 and 300 F4 being prime lenses gives them an advantage in that matter...

Caat · 02-10-2015, 09:51 AM

I'm kind of interested in this lens but as an owner of a Bigma and the 60-250 I wonder whether it's worth the investment.

I would hope that it would outperform the Bigma in terms of AF performance and general image quality but I wonder if I'd miss the sheer flexibility of 50-500mm...

Shanti · 02-10-2015, 08:47 PM

Why so Heavy?? same as Sigma 150-600 sports,which I was about to go for & change to Nikon ,but 2kg is alot to handhold for birding,so I hoped the SIgma consumer or now the Pentax was lighter.I t must have SR built in,as in body SR is not good for long teles..

**filoxophy** · 02-11-2015, 07:18 PM

Originally posted by Shanti

Why so Heavy?? same as Sigma 150-600 sports,which I was about to go for & change to Nikon ,but 2kg is alot to handhold for birding,so I hoped the SIgma consumer or now the Pentax was lighter.I t must have SR built in,as in body SR is not good for long teles..

There is no SR switch or badge on the lens.

Stoogie · 02-12-2015, 02:43 AM

Originally posted by dafbp

If that's all the improvement for such a big price, they can keep it.

60-250 is fixed aperture and was 60% of the price of this at launch. Acceptable for the quality. This one has to at least match it in IQ.

If I don't get a proper telephoto (300mm is too short for the uber-safe airshows we have nowadays) with good IQ I'll be [forced to] thinking seriously about a system change.

60-250 is a crop lens

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02-09-2015, 07:31 AM	#106
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 7,001	AFAICT they upload more samples later. At least that was the case with previous zoom releases. Stop moaning and be patient PS: I'm eagerly waiting for those two...

02-09-2015, 07:52 AM	#107
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by rawr True. Looks good edge-to-edge. Hardly any visible softness at the boundaries of the frame. At least at 180-190mm, and on APS-C. And at f/8.

02-09-2015, 08:02 AM	#108
derekkite Pentaxian Join Date: Sep 2011 Location: Nelson B.C. Posts: 3,782	Originally posted by Mistral75 And at f/8. Yes. I want to see wide open at full zoom.

02-09-2015, 08:32 AM	#109
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Looking at the flower image reveals some fringing in front of and behind the plane of focus, which is a bit worrisome IMO. The Sigma 100-300mm /f4 doesn't exhibit that kind of abberration due to its apochromatic design. Originally posted by rawr it means you can run ISO 100 at f8. But there's a big risk of blur. Not if you use MLU properly. The tripod collar foot seems to be well placed to help eliminate vibrations, Many CAnon L and Nikkor super telephotos don't have the foot appropriately placed for the FL.

02-09-2015, 03:48 PM	#110
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by flogtv6 samples with K-S2 : As a FYI, I just figured out that the lens sample images were taken overlooking Battery Point in Hobart (Tasmania). I knew something looked familiar about that scene.

02-09-2015, 03:58 PM	#111
Vylen Veteran Member Join Date: Dec 2008 Location: Sydney, Australia Photos: Gallery Posts: 1,262	Originally posted by rawr As a FYI, I just figured out that the lens sample images were taken overlooking Battery Point in Hobart (Tasmania). I knew something looked familiar about that scene. Haha really? I was thinking the place looked like someplace in Australia

02-10-2015, 07:15 AM	#112
Dieseler Pentaxian Join Date: Feb 2014 Location: Western Australia Photos: Albums Posts: 351	Originally posted by derekkite Yes. I want to see wide open at full zoom. Me too.

02-10-2015, 09:09 AM	#113
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by derekkite Yes. I want to see wide open at full zoom. ...even the Sigma 100-300mm f/4 APO EX DG struggles with this.

02-10-2015, 09:20 AM	#114
derekkite Pentaxian Join Date: Sep 2011 Location: Nelson B.C. Posts: 3,782	Originally posted by Digitalis ...even the Sigma 100-300mm f/4 APO EX DG struggles with this. On a continuum. There are long zooms that you start at f8 and smaller to get passable results. My 500 f4.5 Sigma is better at F8; better contrast deeper colors, a more pleasing image all around, but is very nice wide open. In low light I can shoot wide open. Same with the 300 f4 Pentax. 450 f5.6 requires pretty good light to start with, and if you lost half just to get anything, then I'll pass.

02-10-2015, 09:23 AM	#115
Spodeworld Site Supporter Join Date: Aug 2011 Location: New Joisey Photos: Gallery \| Albums Posts: 1,370	Is there in lens stabilization? Seems like there needs to be for a lens of this length

02-10-2015, 09:29 AM	#116
JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,638	Originally posted by derekkite On a continuum. There are long zooms that you start at f8 and smaller to get passable results. My 500 f4.5 Sigma is better at F8; better contrast deeper colors, a more pleasing image all around, but is very nice wide open. In low light I can shoot wide open. Same with the 300 f4 Pentax. 450 f5.6 requires pretty good light to start with, and if you lost half just to get anything, then I'll pass. I'd think that the 500 F4.5 and 300 F4 being prime lenses gives them an advantage in that matter...

02-10-2015, 09:51 AM	#117
Caat Veteran Member Join Date: Feb 2009 Location: United Kingdom Photos: Albums Posts: 927	I'm kind of interested in this lens but as an owner of a Bigma and the 60-250 I wonder whether it's worth the investment. I would hope that it would outperform the Bigma in terms of AF performance and general image quality but I wonder if I'd miss the sheer flexibility of 50-500mm...

02-10-2015, 08:47 PM	#118
Shanti Veteran Member Join Date: Jul 2012 Location: Western Denmark Photos: Gallery \| Albums Posts: 927	Why so Heavy?? same as Sigma 150-600 sports,which I was about to go for & change to Nikon ,but 2kg is alot to handhold for birding,so I hoped the SIgma consumer or now the Pentax was lighter.I t must have SR built in,as in body SR is not good for long teles..

02-11-2015, 07:18 PM	#119
filoxophy Site Supporter Join Date: Jul 2012 Location: Albuquerque Posts: 1,133	Originally posted by Shanti Why so Heavy?? same as Sigma 150-600 sports,which I was about to go for & change to Nikon ,but 2kg is alot to handhold for birding,so I hoped the SIgma consumer or now the Pentax was lighter.I t must have SR built in,as in body SR is not good for long teles.. There is no SR switch or badge on the lens.

02-12-2015, 02:43 AM	#120
Stoogie Senior Member Join Date: May 2012 Location: Mission, B.C. Photos: Albums Posts: 166	Originally posted by dafbp If that's all the improvement for such a big price, they can keep it. 60-250 is fixed aperture and was 60% of the price of this at launch. Acceptable for the quality. This one has to at least match it in IQ. If I don't get a proper telephoto (300mm is too short for the uber-safe airshows we have nowadays) with good IQ I'll be [forced to] thinking seriously about a system change. 60-250 is a crop lens