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SP/XP 14mm /2.4 Rokinon testing and images
  
 
rji2goleez
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p.3 #1 · p.3 #1 · SP/XP 14mm /2.4 Rokinon testing and images


This is looking good! My sigma MC-11 seems to be spot on and focuses just past infinity which is my preference. However it's been too cold, snowy and cloudy here in MN to do much testing.


Mar 13, 2017 at 01:11 PM
Schlotkins
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p.3 #2 · p.3 #2 · SP/XP 14mm /2.4 Rokinon testing and images


Looks great! I may have to try one. Does it seem like it's faster (i.e. more light) than the old 2.8 version?


Mar 13, 2017 at 02:06 PM
mcbroomf
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p.3 #3 · p.3 #3 · SP/XP 14mm /2.4 Rokinon testing and images


Schlotkins wrote:
Looks great! I may have to try one. Does it seem like it's faster (i.e. more light) than the old 2.8 version?


I can't really tell yet, not enough shots in the same conditions. I typically only used the old MF version for stars. Once I've done more I'll be able to compare files.



Mar 13, 2017 at 04:42 PM
mcbroomf
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p.3 #4 · p.3 #4 · SP/XP 14mm /2.4 Rokinon testing and images


The SS foil I ordered was delivered and I made up some shims to go in one of my MB IV adapters which was too thin. I was lucky and with a single shim got it to pretty much the same as the MC-11 adapter, ie got infinity focus just before the hard stop. The result seems to bring the adapter up to the same quality as the Sigma adapter which is good news.

I think the lens is a keeper. Not sure what the Sigma will bring to the table but I'm very happy with the tests from this lens so I'll likely skip it ... unless

Some additional tests. I forgot to put on the unshimmed adapter to show the difference, but this was with the new and improved MB IV

Top left and right only, WO, 13 secs, 1600 ISO





Top left-center-bottom right, hand held





Bottom left-center-top right








Mar 17, 2017 at 05:51 PM
rji2goleez
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p.3 #5 · p.3 #5 · SP/XP 14mm /2.4 Rokinon testing and images


Nice! I tend to agree this is a keeper but I wish the weather would cooperate so I could contribute to these tests! Hopefully this weekend . . .


Mar 17, 2017 at 05:58 PM
mcbroomf
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p.3 #6 · p.3 #6 · SP/XP 14mm /2.4 Rokinon testing and images


Fingers crossed for you. We're expecting another 5-8" of snow ...


Mar 17, 2017 at 06:02 PM
freaklikeme
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p.3 #7 · p.3 #7 · SP/XP 14mm /2.4 Rokinon testing and images


Nice work, gentlemen. Thanks for sharing and it looks like you've both got good copies.


Mar 18, 2017 at 02:09 AM
Chris_88
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p.3 #8 · p.3 #8 · SP/XP 14mm /2.4 Rokinon testing and images


Thanks for tests, gentlemen. It's probably too early to comment on QC, but otherwise how does the XP compare to the old 14 2.8? Vignetting looks slightly better may be?


Mar 18, 2017 at 01:34 PM
rji2goleez
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p.3 #9 · p.3 #9 · SP/XP 14mm /2.4 Rokinon testing and images


Finally some decent weather. All are at f/5.6 except the first which is wide open. Close focusing is nice. Colors and sharpness are nice. A bit of flare shooting into the sun is not. Hopefully it stay clear and I can shoot some stars tonight.






















Mar 18, 2017 at 10:42 PM
Lamda
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p.3 #10 · p.3 #10 · SP/XP 14mm /2.4 Rokinon testing and images




mcbroomf wrote:
The SS foil I ordered was delivered and I made up some shims to go in one of my MB IV adapters which was too thin. I was lucky and with a single shim got it to pretty much the same as the MC-11 adapter, ie got infinity focus just before the hard stop. The result seems to bring the adapter up to the same quality as the Sigma adapter which is good news.

Hi

Would you mind posting pics of your shims? I'm haveong the same issue with my Fotodiox Pro adapter and I'm not liking the corners at all! They do look consistent so I don't think it's decentering. Hoping to get it working right. The center is really quite sharp!

Thanks!



Mar 19, 2017 at 03:53 AM
 

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Lamda
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p.3 #11 · p.3 #11 · SP/XP 14mm /2.4 Rokinon testing and images




rji2goleez wrote:
I have one coming tomorrow as well but I need to find an adapter. I think my local camera store has the MC-11 in stock so I may pick up one of these.


Did you end up using the MC11 or another adapter?



Mar 19, 2017 at 03:55 AM
mcbroomf
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p.3 #12 · p.3 #12 · SP/XP 14mm /2.4 Rokinon testing and images


Lamda wrote:
Hi

Would you mind posting pics of your shims? I'm haveong the same issue with my Fotodiox Pro adapter and I'm not liking the corners at all! They do look consistent so I don't think it's decentering. Hoping to get it working right. The center is really quite sharp!

Thanks!

I have 1 more adapter to make shims for so I'll post a pic when I do that one, but essentially it will look like this, except that I found I had to make the shims narrower otherwise they fouled the lens flange when it was being mounted (I could not mount the lens the 1st time). I'm using a thicker, stiffer shim material and only needed 1 layer and I think that was part of the problem.
http://www.fredmiranda.com/forum/topic/1415739/2#13444891



Mar 19, 2017 at 07:56 AM
rji2goleez
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p.3 #13 · p.3 #13 · SP/XP 14mm /2.4 Rokinon testing and images


Lamda wrote:

Did you end up using the MC11 or another adapter?


I have the MC-11. No shimming required.



Mar 19, 2017 at 11:36 AM
Chris_88
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p.3 #14 · p.3 #14 · SP/XP 14mm /2.4 Rokinon testing and images


Sorry to bug people again, but how would rate fall off/vignetting wide open? Bob's first shot above shows some, but to my eyes it doesn't look too bad. The old Samyang 14 2.8 and the Zeiss 15 2.8 are pretty bad in that regard, with the latter supposedly having more than 4 EVF worth at f2.8, which sucks for astro.


Mar 22, 2017 at 01:34 PM
rji2goleez
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p.3 #15 · p.3 #15 · SP/XP 14mm /2.4 Rokinon testing and images


In my limited shooting with the lens, I believe it to be much better than the old Samyang. While there might be some variability depending on shooting conditions, I believe what we see in my WO shot above to be typically what we will see with the new lens. I will say that I need more time with the lens myself. Work and weather have prevented me from spending the quality time I need . . .


Mar 22, 2017 at 02:05 PM
Chris_88
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p.3 #16 · p.3 #16 · SP/XP 14mm /2.4 Rokinon testing and images



rji2goleez wrote:
In my limited shooting with the lens, I believe it to be much better than the old Samyang. While there might be some variability depending on shooting conditions, I believe what we see in my WO shot above to be typically what we will see with the new lens. I will say that I need more time with the lens myself. Work and weather have prevented me from spending the quality time I need . . .


Thanks, Bob. That sounds encouraging.



Mar 22, 2017 at 02:15 PM
mcbroomf
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p.3 #17 · p.3 #17 · SP/XP 14mm /2.4 Rokinon testing and images


I'll try to get a few WO shots done later this week. I don't think I have any from my old Rokinon though as I only used that for astro


Mar 22, 2017 at 03:32 PM
kylebarendrick
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p.3 #18 · p.3 #18 · SP/XP 14mm /2.4 Rokinon testing and images


Received mine this week and have played with it a little on my 5DSR. Here are a couple of shots in late afternoon light and then a few of the (light polluted) night sky in my neighborhood. 100% crops of those as well in the lower left corner. I attempted to get the exposures for the sky to be about the same (f/2.4 at 20s and ISO 1600, f/2.8 at 30s and ISO 1600, and f/4 at 30s and ISO 3200).

FWIW, I set the focus at the infinity mark and it looks pretty darn accurate to me.





House Wide Open







House at f/8 (the sun was going down so there is a little less light)







Sky wide open, 20s at ISO1600







Sky f/2.8, 30s at ISO1600







Sky f/4, 30s at ISO 3200



Edited on Mar 23, 2017 at 05:51 AM · View previous versions



Mar 23, 2017 at 05:45 AM
kylebarendrick
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p.3 #19 · p.3 #19 · SP/XP 14mm /2.4 Rokinon testing and images


And the 100% crops of the lower left corner...





100% at f/2.4

  Canon EOS 5DS R    14mm lens    14mm    f/2.5    20s    1600 ISO    0.0 EV  







100% at f/2.8

  Canon EOS 5DS R    14mm lens    14mm    f/2.8    30s    1600 ISO    0.0 EV  







100% at f/4

  Canon EOS 5DS R    14mm lens    14mm    f/4.0    30s    3200 ISO    0.0 EV  




Mar 23, 2017 at 05:46 AM
mcbroomf
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p.3 #20 · p.3 #20 · SP/XP 14mm /2.4 Rokinon testing and images


Here are a couple of WO shots taken yesterday to show vignetting. They're pretty small but you can find larger versions in the link below, as well as the same images taken from 2.8 to F8
http://www.pbase.com/mike_broomfield/14mm_sp_rokinon_lens_tests
'scuse the glove intrusion on the left on some of them ...

These were hand held with EFC off so that there should be no effect from short shutter times (1/2500) on the WO shots. LR processed with defaults.















Mar 24, 2017 at 02:51 PM
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