How sharp is D-FA* 70-200 wide open?

vitc · 04-27-2016, 02:02 PM

Wondering how sharp is D-FA* 70-200 at 2.8? I expect to shoot mostly in dim conditions thus often with aperture wide open. Could somebody publish a full-size sample or 1:1 crop from the lens?

Adam · 04-27-2016, 02:34 PM

If you nail the focus, it's pretty darn sharp!

This was just a quick snap from the K-50:

http://pfpho.com/onforum/IMGP8975.JPG
http://pfpho.com/onforum/IMGP8975.DNG

virusn3t · 04-27-2016, 04:10 PM

Originally posted by Adam

If you nail the focus, it's pretty darn sharp!

This was just a quick snap from the K-50:

http://pfpho.com/onforum/IMGP8975.JPG
http://pfpho.com/onforum/IMGP8975.DNG

Thanks for the files, im thinking about purchase the lens (but i already have the tamron, so im consulting with the pillow), but the DNG file is corrupted, i downloaded 3 times and it can be read by ACR ot Photoshop.

Sandy Hancock · 04-27-2016, 05:25 PM

Short answer: sharp enough

All hand held, so I guess they could be sharper....
You'll have to make do with scaled down jpegs from me though.

**darylk** · 04-27-2016, 07:41 PM

Originally posted by vitc

Wondering how sharp is D-FA* 70-200 at 2.8? I expect to shoot mostly in dim conditions thus often with aperture wide open. Could somebody publish a full-size sample or 1:1 crop from the lens?

Some recent shots shared by Man Kuhn (Bruce Trail Hiker): DFA* 70-200mm - Acclaimed pianist Lukas Geniusas: Pentax SLR Talk Forum: Digital Photography Review. It looks quite impressive - sharp on what you're focusing on and very nice background bokeh.
Daryl

Adam · 04-27-2016, 07:45 PM

Originally posted by virusn3t

Thanks for the files, im thinking about purchase the lens (but i already have the tamron, so im consulting with the pillow), but the DNG file is corrupted, i downloaded 3 times and it can be read by ACR ot Photoshop.

It should work- I think the side cached an old version, while it was still uploading.

virusn3t · 04-27-2016, 09:46 PM

Originally posted by Adam

It should work- I think the side cached an old version, while it was still uploading.

Thanks for reupload the file!!!

kp0c · 04-28-2016, 07:19 AM

Originally posted by darylk

Some recent shots shared by Man Kuhn (Bruce Trail Hiker): DFA* 70-200mm - Acclaimed pianist Lukas Geniusas: Pentax SLR Talk Forum: Digital Photography Review. It looks quite impressive - sharp on what you're focusing on and very nice background bokeh.
Daryl

For those interested, the pictures provided at the link above are taken at very low shutter speed (1/30th and 1/60th)**, and at 200mm. So it really pushes the limit of the lens and are thus very interesting for real world analysis imo.

**(I only assume that they were taken handheld however.)

vitc · 04-28-2016, 08:43 AM

Thank you, Adam and Sandy!
Your pictures were very helpful, and very nice, too!

Austro-Diesel · 04-28-2016, 12:55 PM

Very nice lens ... quite heavy, but superior sharpness, accurate focussing, smooth bokeh.

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/317500-some...-ed-dc-aw.html

Nicolas06 · 04-30-2016, 05:05 AM

Originally posted by virusn3t

Thanks for the files, im thinking about purchase the lens (but i already have the tamron, so im consulting with the pillow), but the DNG file is corrupted, i downloaded 3 times and it can be read by ACR ot Photoshop.

What the reason? You are disatisfied with the tamron 70-200 sharpness wise?

virusn3t · 04-30-2016, 05:42 AM

Originally posted by Nicolas06

What the reason? You are disatisfied with the tamron 70-200 sharpness wise?

No, but the dfa seems sharper af f2.8 (against f4), is quieter with the DC, and have WR, this features are important to me, but idk is they justify the 1000usd diference

04-27-2016, 02:02 PM	#1
vitc Forum Member Join Date: Mar 2009 Photos: Albums Posts: 50	*How sharp is D-FA 70-200 wide open?** Wondering how sharp is D-FA* 70-200 at 2.8? I expect to shoot mostly in dim conditions thus often with aperture wide open. Could somebody publish a full-size sample or 1:1 crop from the lens?

04-27-2016, 02:34 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	If you nail the focus, it's pretty darn sharp! This was just a quick snap from the K-50: http://pfpho.com/onforum/IMGP8975.JPG http://pfpho.com/onforum/IMGP8975.DNG Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

04-27-2016, 07:45 PM	#6
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Originally posted by virusn3t Thanks for the files, im thinking about purchase the lens (but i already have the tamron, so im consulting with the pillow), but the DNG file is corrupted, i downloaded 3 times and it can be read by ACR ot Photoshop. It should work- I think the side cached an old version, while it was still uploading. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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04-27-2016, 04:10 PM	#3
virusn3t Veteran Member Join Date: Jul 2014 Posts: 676	Originally posted by Adam If you nail the focus, it's pretty darn sharp! This was just a quick snap from the K-50: http://pfpho.com/onforum/IMGP8975.JPG http://pfpho.com/onforum/IMGP8975.DNG Thanks for the files, im thinking about purchase the lens (but i already have the tamron, so im consulting with the pillow), but the DNG file is corrupted, i downloaded 3 times and it can be read by ACR ot Photoshop.

04-27-2016, 05:25 PM	#4
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	Short answer: sharp enough All hand held, so I guess they could be sharper.... You'll have to make do with scaled down jpegs from me though.

04-27-2016, 07:41 PM	#5
darylk Site Supporter Join Date: Sep 2010 Location: Blue Hill, Nebraska Photos: Gallery Posts: 494	Originally posted by vitc Wondering how sharp is D-FA* 70-200 at 2.8? I expect to shoot mostly in dim conditions thus often with aperture wide open. Could somebody publish a full-size sample or 1:1 crop from the lens? Some recent shots shared by Man Kuhn (Bruce Trail Hiker): DFA* 70-200mm - Acclaimed pianist Lukas Geniusas: Pentax SLR Talk Forum: Digital Photography Review. It looks quite impressive - sharp on what you're focusing on and very nice background bokeh. Daryl

04-27-2016, 09:46 PM	#7
virusn3t Veteran Member Join Date: Jul 2014 Posts: 676	Originally posted by Adam It should work- I think the side cached an old version, while it was still uploading. Thanks for reupload the file!!!

04-28-2016, 07:19 AM	#8
kp0c Veteran Member Join Date: Jan 2010 Location: Montreal Photos: Gallery Posts: 761	Originally posted by darylk Some recent shots shared by Man Kuhn (Bruce Trail Hiker): DFA* 70-200mm - Acclaimed pianist Lukas Geniusas: Pentax SLR Talk Forum: Digital Photography Review. It looks quite impressive - sharp on what you're focusing on and very nice background bokeh. Daryl For those interested, the pictures provided at the link above are taken at very low shutter speed (1/30th and 1/60th), and at 200mm. So it really pushes the limit of the lens and are thus very interesting for real world analysis imo. (I only assume that they were taken handheld however.)

04-28-2016, 08:43 AM	#9
vitc Forum Member Join Date: Mar 2009 Photos: Albums Posts: 50 Original Poster	Thank you, Adam and Sandy! Your pictures were very helpful, and very nice, too!

04-28-2016, 12:55 PM	#10
Austro-Diesel Forum Member Join Date: Nov 2011 Posts: 78	Very nice lens ... quite heavy, but superior sharpness, accurate focussing, smooth bokeh. https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/317500-some...-ed-dc-aw.html

04-30-2016, 05:05 AM	#11
Nicolas06 Veteran Member Join Date: Nov 2013 Posts: 4,854	Originally posted by virusn3t Thanks for the files, im thinking about purchase the lens (but i already have the tamron, so im consulting with the pillow), but the DNG file is corrupted, i downloaded 3 times and it can be read by ACR ot Photoshop. What the reason? You are disatisfied with the tamron 70-200 sharpness wise?

04-30-2016, 05:42 AM	#12
virusn3t Veteran Member Join Date: Jul 2014 Posts: 676	Originally posted by Nicolas06 What the reason? You are disatisfied with the tamron 70-200 sharpness wise? No, but the dfa seems sharper af f2.8 (against f4), is quieter with the DC, and have WR, this features are important to me, but idk is they justify the 1000usd diference