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DFA 100mm/2.8 vs DFA 100mm/2.8 WR
Lens: 100mm Camera: K-7 and K-x 
Posted By: tcom, 01-09-2010, 09:56 AM

Well, I did the first comparison shots between both DFA 100/2.8, the WR and the non WR version.

(Warning: by clicking on the shot, you get to the full resolution photo)

K-7, f/2.8, 6s, 100iso

DFA 100/2.8


DFA 100/2.8 WR


K-x, f/5.6, 1/60s, 200iso, AF160FC

DFA 100/2.8


DFA 100/2.8 WR


K-x, f/11, 1/60s, 200iso, AF160FC

DFA 100/2.8


DFA 100/2.8 WR


K-x, f/8, 1/60s, 200iso, AF160FC

DFA 100/2.8


DFA 100/2.8 WR


All these shots are also under DFA 100/2.8 vs DFA 100/2.8 WR - a set on Flickr

It is quite difficult to get the same focus point when changing the lenses. I tried the best to get comparable shots. I do not really see differences between both lenses, apart from slight different focus points.
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01-09-2010, 10:41 AM   #2
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Looks like all the optical quality was retained. With macro a difference in focus is completely understandable, no need to apologize there!!

Thanks for the comparisons!
01-09-2010, 04:28 PM   #3
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Shoot with specular highlights in the background and you'll see a difference.
01-09-2010, 04:35 PM   #4
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Can you give a subjective report regarding the handling and build quality of the lens? Does it basically feel like a Limited lens, in terms of build quality and manual focus? Just curious because I might be interested in upgrading to this from F100 Macro since this has WR.

01-09-2010, 04:47 PM   #5
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lets see a shot with it on the camera!!
01-10-2010, 05:16 AM   #6
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Original Poster
Jim: the handling and overall feeling of this lens is much closer to the limited lens than to the "old" non WR DFA 100 plastic feeling.


I did an additional test this morning, I wanted to see the difference due to the rounded aperture blades of the new WR lens. I set the camera to MF, pointed the camera to a few red LEDs and set the focusing ring to about 1m, in order to have the LEDs well out of focus:

K-7, DFA 100/2.8, f/4.5


K-7, DFA 100/2.8 WR, f/4.5

Last edited by tcom; 01-10-2010 at 06:00 AM.
01-10-2010, 07:16 AM   #7
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Thanks for taking the time to do this.

01-10-2010, 10:45 PM   #8
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QuoteOriginally posted by tcom Quote
Jim: the handling and overall feeling of this lens is much closer to the limited lens than to the "old" non WR DFA 100 plastic feeling.


I did an additional test this morning, I wanted to see the difference due to the rounded aperture blades of the new WR lens. I set the camera to MF, pointed the camera to a few red LEDs and set the focusing ring to about 1m, in order to have the LEDs well out of focus:

--images snipped--
Well those OOF highlights sure do look nice even stopped down a bit, that's pretty cool. Sigh...I'm not sure I can handle any more LBA.

Thanks for posting the tests. I want to see some real life examples too if you can manage to bring out the any differences that this makes in real world shooting.
01-11-2010, 11:20 AM   #9
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Due to requests on several forums, I did another bokeh comparison series to see the effect of the rounded aperture blades at various apertures.

For the testing, I used two green LEDs, put the camera on a tripod, set DOF preview to optical. I set the aperture, set DOF preview, and turned the focusing ring until I was seeing two large spots in the viewfinder and took the photo.

Here are the results:

f/2.8
WR


non WR


f/4.5
WR


non WR


f/5.6
WR


non WR


f/8
WR


non WR
01-11-2010, 02:10 PM   #10
Ash
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Wow, thanks for these experiments Dom.
The WR version seems to come out on top in terms of bokeh, but everything else seems to be comparable to the non-WR lens. Great real world results above - both are good lenses.
Perhaps we can now have it as a separate entry in the lens review database?
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