HD PENTAX-D FA ★ 70-200mm F2.8 at 5th February?

timautin · 04-18-2015, 04:59 PM

So, sorry I've been a bit long, but here is the separated thread : https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/293399-pent...ml#post3225745

jaad75 · 04-19-2015, 01:46 AM

Originally posted by Winder

Using pictures that have been over sharpened in post tells you nothing about the lens. It make the bokeh look bad and adds white halos to the image.

That's exactly what I meant writing my comment.

Nicolas06 · 04-19-2015, 04:31 AM

Originally posted by jaad75

That's exactly what I meant writing my comment.

i agree too ! The level of sharpening you can add also really depend of the subject, effect.

reh321 · 04-19-2015, 11:14 AM

Originally posted by timautin

So, sorry I've been a bit long, but here is the separated thread : https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/293399-pent...ml#post3225745

Yay!!!

ZoT · 04-20-2015, 01:46 PM

Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review

JinDesu · 04-20-2015, 02:24 PM

Originally posted by ZoT

Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review

Thanks for the link. Interesting about the AF being hit or miss, but I'm going to chalk that up to user error

The shot of the flowers at 200mm F2.8 seems a bit front focused. The 170mm F2.8 is relatively sharp, definitely way less bloomy than my Tamron 70-200 under the same conditions. The swan shot also appears a little mis-focused, not sure. The reflection is sharper than the swan itself.

The close focus shot at F4 of the flower is pretty damn good.

harrisonww · 04-20-2015, 03:49 PM

Originally posted by ZoT

Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review

Only thing beside good image quality im looking for in this lens is autofocus speed and accuracy. I hope this review isnt correct in saying it doesnt match the speeds of other manufacturers. Not all ricoh/pentax users shoot still landscapes you know! ;(

Stavri · 04-20-2015, 04:05 PM

Originally posted by ZoT

Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review

Sweet mother of god, look at those graph bars go through the roof. This lens seems to be made out of Otus-es, it sure weights like one...

I find myself at a point where I find review sites less helpful. All I want to see is in focus sample photos with the exif info, that's all I really need to judge a lens.

rawr · 04-20-2015, 04:20 PM

Originally posted by JinDesu

Interesting about the AF being hit or miss,

The review says:

Quote:

Focus accuracy with phase detection could be a little hit and miss, so care may need to be taken, especially when shooting erratic, moving and difficult subjects.

That comment in the review was a bit silly. Like successfully shooting 'erratic, moving and difficult targets' was ever the responsibility of just the lens. Camera used, AF settings used, the experience of the user - all count for more.

Anyway, I thought the 70-200 was still at the 'pre-release' stage. If so, they should have noted that in their review.

harrisonww · 04-20-2015, 04:59 PM

Originally posted by rawr

The review says:

That comment in the review was a bit silly. Like successfully shooting 'erratic, moving and difficult targets' was ever the responsibility of just the lens. Camera used, AF settings used, the experience of the user - all count for more.

Anyway, I thought the 70-200 was still at the 'pre-release' stage. If so, they should have noted that in their review.

"The silent focusing motor results in reasonably quick autofocus, although not as quick as can be found on some equivalent lenses from other camera manufacturers."

I am nitpicking from the review, because the charts at 5.6 70mm at centre are unlike any other lens. Seems to be fairly avg at 135, 200mm.

However I do need a 70-200mm for sports, if it isnt as fast as other manufacturers does that mean its slow?

Wild Mark · 04-20-2015, 05:19 PM

Oh dear, the side by side charts are not flattering for the Pentax .....

harrisonww · 04-20-2015, 05:22 PM

Originally posted by Stavri

Here's a quick MTF comparison between the D-FA*70-200mm f2.8 and the Tamron SP 70-200 f2.8 Di VC USD (newest model, not available in Pentax mount)

1500, to 2500... extra thousand dollars. Infinity to focus is 0.6 sec, canon is 0.5 I wonder what the new pentax is.

starjedi · 04-20-2015, 05:39 PM

Originally posted by Wild Mark

Oh dear, the side by side charts are not flattering for the Pentax .....

simplify from the chart comparsion, pentax is the best. Now the rating hangs on the autofocus speed... It might need the new k3ii or ff to defend!

jaad75 · 04-20-2015, 05:40 PM

Originally posted by harrisonww

Infinity to focus is 0.6 sec, canon is 0.5 I wonder what the new pentax is.

What I measured from one of videos available, it's 0.5 s

Glorfindelrb · 04-20-2015, 05:48 PM

Care about the different scale for the Sigma. The lack of quality at f22 make me to suspect that it has been tested on APS-C (obvious) when the two other have been tested on FF.
That's will also affect the edges that are of course good on an APS-C for the Pentax.

So it's better than the Tamron on it's sweet spot (f5.6-f8) but behind fully open. It's better than the Sigma everywhere but at max magnification where it is similar.

Maybe you should re-scale the Sigma graphs to have a real side by side comparison.

04-20-2015, 04:05 PM	#908
Stavri Veteran Member Join Date: Aug 2014 Location: at a Bean & Leaf Photos: Albums Posts: 1,815	Originally posted by ZoT Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review Sweet mother of god, look at those graph bars go through the roof. This lens seems to be made out of Otus-es, it sure weights like one... I find myself at a point where I find review sites less helpful. All I want to see is in focus sample photos with the exif info, that's all I really need to judge a lens. Last edited by Stavri; 04-20-2015 at 04:28 PM.

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04-18-2015, 04:59 PM	#901
timautin Pentaxian Join Date: Feb 2015 Posts: 345	So, sorry I've been a bit long, but here is the separated thread : https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/293399-pent...ml#post3225745

04-19-2015, 01:46 AM	#902
jaad75 Veteran Member Join Date: Sep 2007 Location: Cracow Posts: 457	Originally posted by Winder Using pictures that have been over sharpened in post tells you nothing about the lens. It make the bokeh look bad and adds white halos to the image. That's exactly what I meant writing my comment.

04-19-2015, 04:31 AM	#903
Nicolas06 Veteran Member Join Date: Nov 2013 Posts: 4,854	Originally posted by jaad75 That's exactly what I meant writing my comment. i agree too ! The level of sharpening you can add also really depend of the subject, effect.

04-19-2015, 11:14 AM	#904
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 22,155	Originally posted by timautin So, sorry I've been a bit long, but here is the separated thread : https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/293399-pent...ml#post3225745 Yay!!!

04-20-2015, 01:46 PM	#905
ZoT Forum Member Join Date: Oct 2006 Location: Italy Photos: Gallery Posts: 85	Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review

04-20-2015, 02:24 PM	#906
JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,632	Originally posted by ZoT Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review Thanks for the link. Interesting about the AF being hit or miss, but I'm going to chalk that up to user error The shot of the flowers at 200mm F2.8 seems a bit front focused. The 170mm F2.8 is relatively sharp, definitely way less bloomy than my Tamron 70-200 under the same conditions. The swan shot also appears a little mis-focused, not sure. The reflection is sharper than the swan itself. The close focus shot at F4 of the flower is pretty damn good.

04-20-2015, 03:49 PM	#907
harrisonww Senior Member Join Date: Jun 2012 Location: London Ontario Posts: 149	Originally posted by ZoT Pentax HD PENTAX-D FA* 70-200mm f/2.8 ED DC AW Review Only thing beside good image quality im looking for in this lens is autofocus speed and accuracy. I hope this review isnt correct in saying it doesnt match the speeds of other manufacturers. Not all ricoh/pentax users shoot still landscapes you know! ;(

04-20-2015, 04:20 PM	#909
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by JinDesu Interesting about the AF being hit or miss, The review says: Quote: Focus accuracy with phase detection could be a little hit and miss, so care may need to be taken, especially when shooting erratic, moving and difficult subjects. That comment in the review was a bit silly. Like successfully shooting 'erratic, moving and difficult targets' was ever the responsibility of just the lens. Camera used, AF settings used, the experience of the user - all count for more. Anyway, I thought the 70-200 was still at the 'pre-release' stage. If so, they should have noted that in their review.

04-20-2015, 04:59 PM	#910
harrisonww Senior Member Join Date: Jun 2012 Location: London Ontario Posts: 149	Originally posted by rawr The review says: That comment in the review was a bit silly. Like successfully shooting 'erratic, moving and difficult targets' was ever the responsibility of just the lens. Camera used, AF settings used, the experience of the user - all count for more. Anyway, I thought the 70-200 was still at the 'pre-release' stage. If so, they should have noted that in their review. "The silent focusing motor results in reasonably quick autofocus, although not as quick as can be found on some equivalent lenses from other camera manufacturers." I am nitpicking from the review, because the charts at 5.6 70mm at centre are unlike any other lens. Seems to be fairly avg at 135, 200mm. However I do need a 70-200mm for sports, if it isnt as fast as other manufacturers does that mean its slow?

04-20-2015, 05:19 PM	#911
Wild Mark Veteran Member Join Date: Jun 2013 Location: Newcastle Photos: Gallery \| Albums Posts: 1,954	Oh dear, the side by side charts are not flattering for the Pentax .....

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04-20-2015, 05:22 PM	#912
harrisonww Senior Member Join Date: Jun 2012 Location: London Ontario Posts: 149	Originally posted by Stavri Here's a quick MTF comparison between the D-FA*70-200mm f2.8 and the Tamron SP 70-200 f2.8 Di VC USD (newest model, not available in Pentax mount) 1500, to 2500... extra thousand dollars. Infinity to focus is 0.6 sec, canon is 0.5 I wonder what the new pentax is.

04-20-2015, 05:39 PM	#913
starjedi Veteran Member Join Date: Dec 2013 Location: New Jersey Posts: 932	Originally posted by Wild Mark Oh dear, the side by side charts are not flattering for the Pentax ..... simplify from the chart comparsion, pentax is the best. Now the rating hangs on the autofocus speed... It might need the new k3ii or ff to defend!

04-20-2015, 05:40 PM	#914
jaad75 Veteran Member Join Date: Sep 2007 Location: Cracow Posts: 457	Originally posted by harrisonww Infinity to focus is 0.6 sec, canon is 0.5 I wonder what the new pentax is. What I measured from one of videos available, it's 0.5 s

04-20-2015, 05:48 PM	#915
Glorfindelrb Veteran Member Join Date: Feb 2012 Posts: 364	Care about the different scale for the Sigma. The lack of quality at f22 make me to suspect that it has been tested on APS-C (obvious) when the two other have been tested on FF. That's will also affect the edges that are of course good on an APS-C for the Pentax. So it's better than the Tamron on it's sweet spot (f5.6-f8) but behind fully open. It's better than the Sigma everywhere but at max magnification where it is similar. Maybe you should re-scale the Sigma graphs to have a real side by side comparison.