Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 30 Apr 2016 (Saturday) 16:08
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

Rokinon FE14M-C 14mm F2.8 Ultra Wide - Is it an okay copy?

 
neacail
Goldmember
Avatar
1,188 posts
Gallery: 43 photos
Likes: 439
Joined Dec 2013
Location: Calgary, AB, Canada
Post edited over 3 years ago by neacail. (2 edits in all)
     
Apr 30, 2016 16:08 |  #1

After years of procrastination, I finally picked up the 14mm Rokinon. The reviews kept scaring me: particularly when people would mention having to send a couple back before finally getting a good one.

I ordered the Rokinon FE14M-C 14mm F2.8 Ultra Wide, and I think that is the one I received. This one has no chip.

Here are two image samples from it. These have been processed in Lightroom. I just did a batch process to try to get them as close as possible. All of the vignetting hasn't been corrected in the F2.8 image. My tripod was set up about a 1/2 metre away from the wall.

What do you think? Do you see any issues? I think I might see an issue in one of the images, but I might just be over thinking it and not totally sure what to expect. Overall, I think it is okay. I don't know if this is as good as it gets or not.


HOSTED PHOTO
please log in to view hosted photos in full size.


HOSTED PHOTO
please log in to view hosted photos in full size.


Shelley
Image Editing Okay

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
NG8JGFX
Senior Member
Avatar
732 posts
Gallery: 5 photos
Likes: 283
Joined Mar 2011
Location: Southern CA
     
Apr 30, 2016 18:48 |  #2

Yeah, the "AE"14M-C is the one with the chip in it...I just received mine Friday but its at my office..picking up tonight... it does look like a little bit of odd vignetting is going on in the second photo, but at f2.8 its expected...(vignetting of some kind) looks like a little more to the right and softens going to the left...I found one on ebay for $455 new...I dint want to mess the manual selections other than just focusing by itself...I'll test mine out over the next few days, see how it performs...

Have you tried correcting in post with a lens profile?


MyCanonPhotos (external link) facebook (external link)
Tenba 32L, 5D IV, 5D III, 7D II, 8 Lenses, Three 600 EX-RT's, ST-E3-RT +

  
  LOG IN TO REPLY
neacail
THREAD ­ STARTER
Goldmember
Avatar
1,188 posts
Gallery: 43 photos
Likes: 439
Joined Dec 2013
Location: Calgary, AB, Canada
     
Apr 30, 2016 19:00 as a reply to  @ NG8JGFX's post |  #3

I used Adobe's lens profile for the lens on the 6D, but I was using my 5D3. That could account for the poor correction on the f2.8 photo.

I'm going to be heading out in about an hour to test it out on a panorama. I'll test it on my 6D. I'll also be shooting the same panorama (with hopefully the same settings) with my 21mm Distagon. It isn't a fair comparison (the Distagon should kick butt), but it'll give me a better idea how it is performing.

My 6D is my manual lens camera (I have a different focus screen in it), so I should have done the test shots I posted on that. I was working with the 5D3 and couldn't be bothered with the 6D.

I think it is the diffraction in the f22 photo that bugs me. I'll test it at f11 tonight.

The top left corner looks too blurry to me in the f2.8 photo. But, that could be an issue with the vignetting.


Shelley
Image Editing Okay

  
  LOG IN TO REPLY
Bassat
"I am still in my underwear."
8,075 posts
Likes: 2735
Joined Oct 2015
     
Apr 30, 2016 19:09 |  #4

neacail wrote in post #17990973 (external link)
I used Adobe's lens profile for the lens on the 6D, but I was using my 5D3. That could account for the poor correction on the f2.8 photo.

I'm going to be heading out in about an hour to test it out on a panorama. I'll test it on my 6D. I'll also be shooting the same panorama (with hopefully the same settings) with my 21mm Distagon. It isn't a fair comparison (the Distagon should kick butt), but it'll give me a better idea how it is performing.

My 6D is my manual lens camera (I have a different focus screen in it), so I should have done the test shots I posted on that. I was working with the 5D3 and couldn't be bothered with the 6D.

I think it is the diffraction in the f22 photo that bugs me. I'll test it at f11 tonight.

The top left corner looks too blurry to me in the f2.8 photo. But, that could be an issue with the vignetting.

Why f/22? You will NEVER NEED f/22 with this lens. At f/5.6 and HFD, everything from 3' to infinity will be in focus. At f/8, it is close to 2'-infinity.




  
  LOG IN TO REPLY
neacail
THREAD ­ STARTER
Goldmember
Avatar
1,188 posts
Gallery: 43 photos
Likes: 439
Joined Dec 2013
Location: Calgary, AB, Canada
     
Apr 30, 2016 19:14 |  #5

Bassat wrote in post #17990983 (external link)
Why f/22? You will NEVER NEED f/22 with this lens. At f/5.6 and HFD, everything from 3' to infinity will be in focus. At f/8, it is close to 2'-infinity.

I just tested both ends. The extremes are usually where issues appear. I'd probably never use either f22 or f2.8. F8 and F11 will most likely be where it is used most of the time.


Shelley
Image Editing Okay

  
  LOG IN TO REPLY
neacail
THREAD ­ STARTER
Goldmember
Avatar
1,188 posts
Gallery: 43 photos
Likes: 439
Joined Dec 2013
Location: Calgary, AB, Canada
Post edited over 3 years ago by neacail.
     
May 01, 2016 18:24 |  #6

neacail wrote in post #17990973 (external link)
I'm going to be heading out in about an hour to test it out on a panorama. I'll test it on my 6D. I'll also be shooting the same panorama (with hopefully the same settings) with my 21mm Distagon. It isn't a fair comparison (the Distagon should kick butt), but it'll give me a better idea how it is performing.

The Distagon did produce better results (contrast and sharpness), but the 14mm Rokinon performed quite admirably for a lens that cost a 1/4 what the Distagon did. The panorama stitched together well.

This has really been down sampled to get it under 10Mb.


HOSTED PHOTO
please log in to view hosted photos in full size.


Shelley
Image Editing Okay

  
  LOG IN TO REPLY
NG8JGFX
Senior Member
Avatar
732 posts
Gallery: 5 photos
Likes: 283
Joined Mar 2011
Location: Southern CA
Post edited over 3 years ago by NG8JGFX.
     
May 02, 2016 00:37 as a reply to  @ neacail's post |  #7

Did you stitch these from vert. or horiz. shots? and how many stitched? whats the final WxH at 300dpi prior to saving down?..

I shot around with mine out back for a bit hand held on my 5D3 and was impressed overall with how well I was able to achieve a good manual focus at f8 and f11...
Still need to do some more testing but I'm primarily going to be using this lens for milky way and star shots...maybe some wide angle beach shots w stars and sky...

-Jason


MyCanonPhotos (external link) facebook (external link)
Tenba 32L, 5D IV, 5D III, 7D II, 8 Lenses, Three 600 EX-RT's, ST-E3-RT +

  
  LOG IN TO REPLY
neacail
THREAD ­ STARTER
Goldmember
Avatar
1,188 posts
Gallery: 43 photos
Likes: 439
Joined Dec 2013
Location: Calgary, AB, Canada
     
May 02, 2016 06:14 |  #8

NG8JGFX wrote in post #17992579 (external link)
Did you stitch these from vert. or horiz. shots? and how many stitched? whats the final WxH at 300dpi prior to saving down?..

I shot around with mine out back for a bit hand held on my 5D3 and was impressed overall with how well I was able to achieve a good manual focus at f8 and f11...
Still need to do some more testing but I'm primarily going to be using this lens for milky way and star shots...maybe some wide angle beach shots w stars and sky...

-Jason

This one is a little over 55"x19" @ 300 DPI. There were 26 vertical shots, taken every 15° (I could have done 45° . . . 15° was a bit excessive). I used Photoshop's "content aware fill" on the sky to fill in the places where there was no data (along the "bumpy" top of the panorama). I cropped along the bottom, as the content aware fill didn't do a good job of dealing with the grasses and the fill was obvious.

For comparison, the one done with my 21mm was also built from 26 vertical shots taken every 15°. It is much larger at a little over 96x28 inches @ 300 DPI. I did the same thing with that one: filled in the bumps in the sky and cropped along the bottom. I haven't worked out the math to account for the discrepancy between the sizes of the panoramas, or determined if something weird happened somewhere in my process.

Here is the panorama from the Zeiss (heavily downsized). Interestingly, it flared worse than the Rokinon. When I shot this I was going for a blown out sun with sun and lens flares, and I thought the Rokinon would be the lens that would deliver the flares.


HOSTED PHOTO
please log in to view hosted photos in full size.


The two panoramas were processed exactly the same way. The Zeiss has better colour and contrast, but those are things that can be tweaked in post. The Rokinon picked up less detail and wasn't quite a sharp, but it may have been that I didn't have quite perfect focus. Without the chip in the lens Live View was very, very dark, and I wasn't able to focus using Live View and 10x magnification. I'll have to play around with that.

I think it will do very well for your wide field astrophotography. Many, many people get great results using it for that purpose, and that is one of the reasons I picked it up too.

Shelley
Image Editing Okay

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

2,402 views & 0 likes for this thread
Rokinon FE14M-C 14mm F2.8 Ultra Wide - Is it an okay copy?
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is HamPhoto
769 guests, 344 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.