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Archive 2012 · Show Samyang 14 mm Landscapes
  
 
jhg photo
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p.1 #1 · p.1 #1 · Show Samyang 14 mm Landscapes


The Samyang 2.8 14 mm is known for very good sharpness across the frame combined with an ugly distortion characteristic, which should not play that much of a role in landscape work.
How is color rendition etc?
You are invited to showcase great landscapes with that affordable lens to convince me that it is the right one for me. Full frame examples are clearly preferred, mentioning of aperture settings would also be nice.
Looking forward to inspiration.



Nov 23, 2012 at 09:15 AM
JimUe
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p.1 #2 · p.1 #2 · Show Samyang 14 mm Landscapes


i've got a couple:

f/2.8


dun remember what aperature this was.






the ugly distortion plays a huge role in landscape work if your landscape work involves lines like horizons. easy to fix with a lens correction profile though.



Nov 25, 2012 at 03:14 PM
mco_970
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p.1 #3 · p.1 #3 · Show Samyang 14 mm Landscapes


Jim - what camera body?


Nov 25, 2012 at 04:47 PM
Mike K
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p.1 #4 · p.1 #4 · Show Samyang 14 mm Landscapes


Originally written for POTN: using Canon 5DII

Based upon the other interest shown in the Samyang 14 thread, I thought those interested in this economy ultra wide angle lens would like to see how it compares to the legendary Zeiss 21. The objective was two fold:
Firstly the issue was to see if PT Lens visually diminished the sharpness of the Samyang (Rokinon branded) 14 f2.8 image captured on a 5DII. This distortion correction software for the Rokinon is not embeded into the Breezebrowser RAW conversion, as it is for the Zeiss. Rather it is a tool added as a Photoshop filter in post. The same test was performed with the Zeiss Distagon 21 f2.8, but PT Lens action was done as part of the RAW conversion. By switching back and forth one can readily see the changes in barrel (mustache) distortion correction being applied by PT Lens. While the Zeiss is being used as a control for the Rokinon application of PT Lens, one can contrast the overall sharpness and FOV of the Rokinon Vs the benchmark of wide angle lenses, the Zeiss 21.
These are presented in a larger size than I normally post so that one can see both the full frame effects of distortion inherent in these lenses as well as any changes in the sharpness of detail. Other than final, default sharpening of Topaz InFocus applied uniformly to all 4 images, there is no editing except downsampling to JPEG presentation size; I even left in the sensor dust bunny at the top. The Palace of Fine Arts in San Francisco was convenient, well lit target, and has lots of parallel straight lines for this test.

First the Rokinon 14 WITHOUT PT Lens, shot at f8







the identical Rokinon 14 TIFF file processed the WITH PT Lens







Open both images and tab them back and forth. Notice how the edges of the frame come forward and the center of the frame gets further away? This has the overall illusion of making the subject seem a bit smaller (distant). It looks as if there is some vignetting compensation too, but there is no way for the program to know what f stop is being used. I studied this at 100% looking for some obvious decrease in sharpness, and decided if any, it was pretty minimal. Some pixels may be added where the image has to expand a bit at the edges, but it seems as though most of the distortion correction is in taking out extra pixels in the center. The fine detail subjectively has the comparable resolution in both images.

Next we compare the a similar style mustache distortion correction by PT Lens on the output of the Zeiss Distagon 21 f2.8. Shot at f 5.6 (optimum sharpness for this lens) WITHOUT PT lens.








and the same RAW file converted WITH PT Lens as an automated Breezebrowser filter.







the distortion is not as accentuated in the center of the frame, but the action carries more towards the edges (see the dust bunny move). My assessment of 100% pixel peeping was that there was no change in image sharpness.

Finally compare the Rokinon Vs the Zeiss: image 1 Vs 3 and image 2 Vs 4. Obviously the 14mm image has a wider fov and smaller details than the 21mm image, don't expect them to be identical. Downsampling of the Zeiss shot could be done with cropping of the Rokinon, but thats another software action affecting IQ. Suffice it to say that the Rokinon does pretty well in comparison, as it is less than $400 at Amazon and the Zeiss more than $1800.

I am in no way affiliated with PT Lens, but its a reasonable $25 program.
Mike K

Edited on Nov 25, 2012 at 06:16 PM · View previous versions



Nov 25, 2012 at 06:02 PM
Mike K
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p.1 #5 · p.1 #5 · Show Samyang 14 mm Landscapes


JimUe wrote:
the ugly distortion plays a huge role in landscape work if your landscape work involves lines like horizons. easy to fix with a lens correction profile though.


There are two distortions in your cityscape, the predominant one being perspective distortion (the vertical lines of buildings leaning inward). This can be addressed before the shot by using shift in a Tilt-Shift lens or post with PS or other image editing programs. This perspective distortion could be seen in any UWA lens, as you are tilting the camera backwards to capture the scene.

The mustache distortion inherent in the Samyang 14 is discussed in my post above, with examples of distortion correction using PT Lens.
Mike K




Nov 25, 2012 at 06:12 PM
wfrank
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p.1 #6 · p.1 #6 · Show Samyang 14 mm Landscapes


Here are four handhelds from a year ago when I got the lens. Havent used it as much as I should.


IMG_1117 1280 II by Wilhelm Frank - Stockholm, on Flickr


IMG_1139 1280 by Wilhelm Frank - Stockholm, on Flickr


IMG_1253 900w by Wilhelm Frank - Stockholm, on Flickr


IMG_1321 1280 by Wilhelm Frank - Stockholm, on Flickr




Nov 25, 2012 at 10:23 PM
JimUe
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p.1 #7 · p.1 #7 · Show Samyang 14 mm Landscapes


mco_970 wrote:
Jim - what camera body?


a900



Nov 26, 2012 at 01:41 AM
JimUe
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p.1 #8 · p.1 #8 · Show Samyang 14 mm Landscapes


Mike K wrote:
There are two distortions in your cityscape, the predominant one being perspective distortion (the vertical lines of buildings leaning inward). This can be addressed before the shot by using shift in a Tilt-Shift lens or post with PS or other image editing programs. This perspective distortion could be seen in any UWA lens, as you are tilting the camera backwards to capture the scene.

The mustache distortion inherent in the Samyang 14 is discussed in my post above, with examples of distortion correction using PT Lens.
Mike K



that's odd. i corrected the mustache distortion.



Nov 26, 2012 at 01:43 AM
Mike K
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p.1 #9 · p.1 #9 · Show Samyang 14 mm Landscapes


JimUe wrote:
that's odd. i corrected the mustache distortion.


Sorry, I misquoted your distortion correction. Your example shows that the perspective distortion can be quite strong in an UWA lens such as the Samyang 14. In PS CS5 its under Filter, Lens Correction, Custom Tab, Transform, Vertical or Horizontal perspective.



Nov 26, 2012 at 04:25 AM
Gunzorro
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p.1 #10 · p.1 #10 · Show Samyang 14 mm Landscapes


Lower Yosemite Falls





The other direction







Nov 26, 2012 at 06:39 AM
 

Search in Used Dept. 



jhg photo
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p.1 #11 · p.1 #11 · Show Samyang 14 mm Landscapes


JimUe
Thank you for your opening entry. Good star shot, one of the applications I am considering with such a fast ultrawide. Here, f2.8 makes the difference to f 4.5 of the otherwise certainly interesting Sigma 12-24.

Mike K
Thanks for the showing the role of using lens profiles, a topic already mentioned in JimUe contribution.

wfrank
You have some shots of impressing clarity that really show the capabilities of this lens. I like the sail ship in the harbor. Makes me really want that lens.




Nov 26, 2012 at 07:03 AM
markhout
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p.1 #12 · p.1 #12 · Show Samyang 14 mm Landscapes


Just to add a lower contrast image to the thread. Rokinon (=Samyang) 14mm UMC, D800E @ f8, tripod, Lightroom 4 then PTLens.

I found that there is a slight misalignment as the right side has more distortion than the left. Do other owners see similar misalignments as well? If no, I will return this one (I'm still within the 30 day period)




Nov 26, 2012 at 02:21 PM
Gunzorro
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p.1 #13 · p.1 #13 · Show Samyang 14 mm Landscapes


markhout -- Mine seems fine on "distortion" -- vignetting and edge softness are equal on all sides. This is my second lens, as I returned the first for inaccurate focus scale. This second one is the same -- had to do my own marked distanse settings.

If you are unsatisfied, I recommend returning and exchanging the lens. It won't be as easy to fix after that return period ends.



Nov 26, 2012 at 02:33 PM
wfrank
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p.1 #14 · p.1 #14 · Show Samyang 14 mm Landscapes


Thanks for kind words. It is a great lens with some known deficiencies. As any other lens. But the performance is there to be harvested for anyone interested in it.

Focus scale is way off on mine too. I never bothered, even bought a Nikon version to a Canon 5D2 just to be able to use an adapter with AF-confirm chip. Nikon means distance scale is in the wrong direction too. Also, far corners can be bothersome.

The last two shots I posted was taken on a ride up upon a large dome-shaped hockey arena here. At the top I did entertain myself with a few handheld HDR's as I usually like them in BW. Here's one.


IMG_1292 1280 by Wilhelm Frank - Stockholm, on Flickr



Nov 26, 2012 at 08:09 PM
JimUe
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p.1 #15 · p.1 #15 · Show Samyang 14 mm Landscapes


on my lens, when focused to infinity, the distance scale is at the very right edge of the number 3, as in 3 metres.


Nov 27, 2012 at 02:25 AM
dbehrens
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p.1 #16 · p.1 #16 · Show Samyang 14 mm Landscapes


Its a fun lens! Dave






















Dec 03, 2012 at 02:15 AM
wfrank
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p.1 #17 · p.1 #17 · Show Samyang 14 mm Landscapes


Nice shots dbehrens. As you obviously know how to do pleasing image it would be interesting to hear your opinion about far corners.

If you take a look at my shot in post #14, you'll see significant degradation in the lower right corner. I see similar in yours (lower left #1, and some in both lower left and right in the last. But I dont think degradation is as harsh as mine. I dont think it's a bad sample, and sometimes it looks more pleasing (and my copy is supersharp 80% of the screen). Any thoughts?



Dec 03, 2012 at 08:30 AM
markhout
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p.1 #18 · p.1 #18 · Show Samyang 14 mm Landscapes


wfrank - I had been shooting at f:8 and found significant degradation on the entire right side, with the lower corner being the worst.

On further investigation - stopping down further to f:13 brought significant relief - that's why I think my lens was slightly misaligned (post #12). From other internet postings I believe that this is a common error in these lenses and I did not bother to return the lens.



Dec 03, 2012 at 02:56 PM
Grahamc
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p.1 #19 · p.1 #19 · Show Samyang 14 mm Landscapes


Some shots using the Samyang 14mm on a Canon 5D2.

All shots corrected with PT lens.



Grahamc 2012

Durham Cathedral





Grahamc 2012

Durham Cathedral from the River Wear.





Grahamc 2012

Palace Green - Durham Cathedral





Grahamc 2012


Durham Castle




Dec 03, 2012 at 11:09 PM
dbehrens
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p.1 #20 · p.1 #20 · Show Samyang 14 mm Landscapes


wfrank wrote:
Nice shots dbehrens. As you obviously know how to do pleasing image it would be interesting to hear your opinion about far corners.

If you take a look at my shot in post #14, you'll see significant degradation in the lower right corner. I see similar in yours (lower left #1, and some in both lower left and right in the last. But I dont think degradation is as harsh as mine. I dont think it's a bad sample, and sometimes it looks more pleasing (and my copy is supersharp 80% of the screen). Any thoughts?


Thanks. Normally I am very pleased with my corners on a FF but in that last pic my lower left is not crisp. I'm guessing (due to low light in the canyon) that this was shot more wide open and closer to infinity focus than what I normally like to shoot. I'm guessing this was probably set on about 7ft focus and f/4-5.6.

Normally I like to set my focus on about 3 feet and from about f/11 onwards I have a very crisp foreground with acceptable infinity. The example below is with a 1Ds Mk2 with focus set at 3ft and f/16.

Dave





100% crops








Dec 04, 2012 at 03:35 AM
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