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beholder3 · 03-01-2016, 06:59 AM

First I was only suprised to see the MTF charts of the new DFA looking good.
Then when comparing them to the current Canon 24-105 lenses it looked even better, essentially outperforming them.
Take a look yourself at the MTFs.

But that is only theory, so it needs to be checked using actual pictures.

Nikon:
So here is a ISO 200 F5.6 picture (imagine the degree of sharpening applied here to save the picture from total softness) of the Nikon 24-120 kit lens to compare: https://www.flickr.com/photos/97447174@N04/12415070774/sizes/o/ (poor corners)
Here is one more Nikon with soft corners and edges even at F8: https://www.flickr.com/photos/100641426@N04/14376812009/sizes/o/
Color fringing madness: https://www.flickr.com/photos/126387360@N08/16444764803/sizes/o/

Canon:
Here is the Canon: https://www.flickr.com/photos/53622946@N07/8724055680/sizes/o/
Boy that sucks.

New Pentax:
http://www.ricoh-imaging.co.jp/english/products/k-1/ex/img/ex-pic04.jpg

Looking good!

AldaCZ · 03-01-2016, 07:38 AM

Originally posted by beholder3

First I was only suprised to see the MTF charts of the new DFA looking good.
Then when comparing them to the current Canon 24-105 lenses it looked even better, essentially outperforming them.
Take a look yourself at the MTFs.

But that is only theory, so it needs to be checked using actual pictures.

Nikon:
So here is a ISO 200 F5.6 picture (imagine the degree of sharpening applied here to save the picture from total softness) of the Nikon 24-120 kit lens to compare: https://www.flickr.com/photos/97447174@N04/12415070774/sizes/o/ (poor corners)
Here is one more Nikon with soft corners and edges even at F8: https://www.flickr.com/photos/100641426@N04/14376812009/sizes/o/
Color fringing madness: https://www.flickr.com/photos/126387360@N08/16444764803/sizes/o/

Canon:
Here is the Canon: https://www.flickr.com/photos/53622946@N07/8724055680/sizes/o/
Boy that sucks.

New Pentax:
http://www.ricoh-imaging.co.jp/english/products/k-1/ex/img/ex-pic04.jpg

Looking good!

They have done homework with 18-135

rawr · 03-01-2016, 08:00 AM

Originally posted by beholder3

First I was only suprised to see the MTF charts of the new DFA looking good.

That's what I've been hinting to people. Look at the MTF's. The 28-105 looks a champ.

D1N0 · 03-01-2016, 08:03 AM - **1 Like**

Doesn't tell me very much. I am sure it is a good lens but everybody can make crappy images even with good lenses. They would need to be compared under controlled conditions.

Ron_Man · 03-04-2016, 09:46 AM

Still an ugly lens, which happens to be a Tamron rebadge...

Will Pentax ever manufacture it's own lenses in the future that look nicer?

**pres589** · 03-04-2016, 09:55 AM

Originally posted by Ron_Man

Still an ugly lens, which happens to be a Tamron rebadge...

Will Pentax ever manufacture it's own lenses in the future that look nicer?

Is this another Tamron re-work job? I thought this was Pentax's own work. The 15-30 and 24-70 are but is this one as well? Not finding an exact Tamron version of this on the market today but I maybe didn't look in the right places.

D1N0 · 03-04-2016, 10:07 AM

It is a Pentax lens. Not a re badge. People are just saying that without checking their facts.

**mattb123** · 03-04-2016, 10:47 AM - **1 Like**

Originally posted by Ron_Man

Still an ugly lens, which happens to be a Tamron rebadge...

Will Pentax ever manufacture it's own lenses in the future that look nicer?

This "issue" puzzles me.
Is it not a black or grey cylinder? What more do you want in how a lens looks? If it's not attention-grabbing garish then so what?

03-01-2016, 06:59 AM	#1
beholder3 Pentaxian Join Date: Dec 2011 Posts: 3,112	The Pentax DFA 28-105 declasses Nikon and Canons similar offerings First I was only suprised to see the MTF charts of the new DFA looking good. Then when comparing them to the current Canon 24-105 lenses it looked even better, essentially outperforming them. Take a look yourself at the MTFs. But that is only theory, so it needs to be checked using actual pictures. Nikon: So here is a ISO 200 F5.6 picture (imagine the degree of sharpening applied here to save the picture from total softness) of the Nikon 24-120 kit lens to compare: https://www.flickr.com/photos/97447174@N04/12415070774/sizes/o/ (poor corners) Here is one more Nikon with soft corners and edges even at F8: https://www.flickr.com/photos/100641426@N04/14376812009/sizes/o/ Color fringing madness: https://www.flickr.com/photos/126387360@N08/16444764803/sizes/o/ Canon: Here is the Canon: https://www.flickr.com/photos/53622946@N07/8724055680/sizes/o/ Boy that sucks. New Pentax: http://www.ricoh-imaging.co.jp/english/products/k-1/ex/img/ex-pic04.jpg Looking good!

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03-01-2016, 07:38 AM	#2
AldaCZ Veteran Member Join Date: Nov 2013 Location: North Bohemia Photos: Gallery Posts: 1,251	Originally posted by beholder3 First I was only suprised to see the MTF charts of the new DFA looking good. Then when comparing them to the current Canon 24-105 lenses it looked even better, essentially outperforming them. Take a look yourself at the MTFs. But that is only theory, so it needs to be checked using actual pictures. Nikon: So here is a ISO 200 F5.6 picture (imagine the degree of sharpening applied here to save the picture from total softness) of the Nikon 24-120 kit lens to compare: https://www.flickr.com/photos/97447174@N04/12415070774/sizes/o/ (poor corners) Here is one more Nikon with soft corners and edges even at F8: https://www.flickr.com/photos/100641426@N04/14376812009/sizes/o/ Color fringing madness: https://www.flickr.com/photos/126387360@N08/16444764803/sizes/o/ Canon: Here is the Canon: https://www.flickr.com/photos/53622946@N07/8724055680/sizes/o/ Boy that sucks. New Pentax: http://www.ricoh-imaging.co.jp/english/products/k-1/ex/img/ex-pic04.jpg Looking good! They have done homework with 18-135

03-01-2016, 08:00 AM	#3
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by beholder3 First I was only suprised to see the MTF charts of the new DFA looking good. That's what I've been hinting to people. Look at the MTF's. The 28-105 looks a champ.

03-01-2016, 08:03 AM - 1 Like	#4
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	Doesn't tell me very much. I am sure it is a good lens but everybody can make crappy images even with good lenses. They would need to be compared under controlled conditions.

03-04-2016, 09:46 AM	#5
Ron_Man Senior Member Join Date: May 2009 Location: MD Posts: 221	Still an ugly lens, which happens to be a Tamron rebadge... Will Pentax ever manufacture it's own lenses in the future that look nicer?

03-04-2016, 09:55 AM	#6
pres589 Site Supporter Join Date: Jan 2014 Location: Wichita, KS Photos: Albums Posts: 4,533	Originally posted by Ron_Man Still an ugly lens, which happens to be a Tamron rebadge... Will Pentax ever manufacture it's own lenses in the future that look nicer? Is this another Tamron re-work job? I thought this was Pentax's own work. The 15-30 and 24-70 are but is this one as well? Not finding an exact Tamron version of this on the market today but I maybe didn't look in the right places.

03-04-2016, 10:07 AM	#7
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	It is a Pentax lens. Not a re badge. People are just saying that without checking their facts.

03-04-2016, 10:47 AM - 1 Like	#8
mattb123 Site Supporter Join Date: Apr 2010 Location: Colorado High Country Photos: Gallery Posts: 10,873	Originally posted by Ron_Man Still an ugly lens, which happens to be a Tamron rebadge... Will Pentax ever manufacture it's own lenses in the future that look nicer? This "issue" puzzles me. Is it not a black or grey cylinder? What more do you want in how a lens looks? If it's not attention-grabbing garish then so what?

The Pentax DFA 28-105 declasses Nikon and Canons similar offerings

Win a Pentax Limited Lens: Raffle Now Live!