Jump to content

Samyang/Rokinon 135mm f2 > Teleconverter? Extension rings?

konzy

By konzy
in Fuji X Lenses

 Share

Recommended Posts

konzy Enthusiast

konzy

Posted
Posted

Hey guys,

 

I just received my Samyang 135mm f2, and it looks like an (heavy) awesome beast! I'll use it for astro, and perhaps some other things.

 

When inspecting the lens, I noticed a big space between the rear lens element and the mount, and was wondering if a teleconverter would fit. Some guy on a german forum claims that he could use the 1.4x teleconverter, but I haven't seen any picture.

 

Has anyone ever tried? That would be awesome to have a 270mm f4, especially for astrophotography, where this lens excels!

 

 

I have the same question with extension rings. The new 80mm macro lens looks great, but very expansive... I read here and here about using extension rings on this 135mm lens, but haven't seen any example so far. Would any of you have any example?

 

Thanks for your inputs!

 

Konzy

Link to post
Share on other sites
  • 3 weeks later...
milandro Grand Master

milandro

Posted
Posted

few people probably own the 135mm and even fewer would have used it with a teleconverter, which probably explains the lack of response.

 

Anyway.

 

Being the teleconverter 1.4 x the focal length will not be 270mm ( which would be doubled it it were 2x but it isn'y) but 189mm  the good news is the because it isn’t 2x you shouldn’t lose 2 stops but only 1.4 stops.

Link to post
Share on other sites
konzy Enthusiast

konzy

Posted
  • Author
Posted

Oh sorry, the 270/4 was actually referring to the 2x teleconverter. I mentioned the 1.4x as an example, but my question was actually for both and these 2 sentences were not supposed to be linked!

 

Anyway, yeah, I guess it's not a lens that is used a lot out there... Which is pity, it's insanely good! I tried my luck on Sony Alpha forums as well, since the setup is the same. 

 

I guess the last resort would be to rent the thing and test it!

Link to post
Share on other sites
  • 2 years later...
Frrrlip Newbie

Frrrlip

Posted
Posted

The Samyang 135mm f/2 is lens for fullframe cameras, on Fuji is equivalent to +/-200mm. So, witn a 2x teleconverter it will become more like a 400mm f/4 beast. I don't have nether Samyang 135mm or a Fuji teleconverter, but I'm looking also for information if anyone has tried.

Link to post
Share on other sites
quincy Community Regular

quincy

Posted
Posted

I bought a Samyang 135/2, and I can use the Fuji 1.4x TC with it. The front part of the 2x TC looks the same, so it should also work.

However, with the 1.4x TC, I see a slight reduction in sharpness. I guess the 2x TC will be worse. The same 1.4x TC on the Fuji 80/2.8 Macro causes no visible degradation of the image, so I think it's the Samyang 135/2 at its limit.

Link to post
Share on other sites
yukosteel Rising Star

yukosteel

Posted
Posted

I've used Fuji TC 2x on many adapted Nikon DSLR lens. Optically that Samyang 135mm F2 is designed for DSLR which means it has at least 30mm more space between rear glass and sensor comparing to Fuji, so TC protruding front block should definitely fit the space and work with Samyang great. The only cons is expected IQ degradation because Fuji TCs are optimized for modern formulas of Fuji tele lens, however resulting IQ may be higher comparing to image right out of Samyang cropped 1.4x or 2x times.

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Similar Content

  • Posts

    • jerryy
      Fungus

      By jerryy · Posted

      A fungus in the forest.

      Welcome, dear visitor! As registered member you'd see an image here…

      Simply register for free here – We are always happy to welcome new members!

      (p.s. Open Topic.)  
    • Don Barar
      LUT doesn't works on resolve

      By Don Barar · Posted

      The backslashes you are referring are just symbols denoting path.  Once you import into these LUTS into Davinci Resolve those backslashes are removed by default and you only see is the true file name which has no backslashes.  Convince yourself of this by opening the LUT folder from the Davinci Resolve Project Settings.  Do you see any backslashes in those LUT names? Of course not.  The only name you see is the one that has the underscores and the periods. These LUTS work as designed without having to change any path names.  However, they need to be set up properly through CSTs and by what is supported in Davinci Resolve.  Hence, the FLog2C film simulation LUTS cannot be used because Davinci Resolve does not support Fuji Gamut color space and the FLog2C gamut. Alternatively, Davinci Resolve does support Flog2 film simulation LUTS because the color space for FLog2 is Rec 2020 and there is an FLog2 gamut. If all you are doing is changing the path names then you are not getting the correct results.
    • PoorAlchemist
      LUT doesn't works on resolve

      By PoorAlchemist · Posted

      I found the reddit topic i refere to :  https://www.reddit.com/r/davinciresolve/comments/1pc3f1e/cant_apply_new_fujifilm_gfx_55_lut/ "Update for y'all, It's just like what @ExpBalSat said, it's because of the backslashes in the names break them. I changed the file name and it works now. "   For me it was the solution. Realy annoying if it doesn’t work for you 😕  
    • Don Barar
      LUT doesn't works on resolve

      By Don Barar · Posted

      Here is the solution to using the Eterna 55 file simulation LUTs in Davinci Resolve.   In general, do not use the FLog2C to film simulation LUTs as they are not supported by Davinci Resolve for two reasons: 1) Davinci Resolve does not support Fuji Gamut Color Space and 2) Davinci Resolve does not support FLog2C gamma.  Instead, use Flog2 which is supported by Davinci Resolve.  Here is an example.  Let's say that you want to use Classic Chrome simulation.  Do the following: Complete your color grade and use a CST to get to Rec 709. Add a node.  Use a CST to convert from Rec 709 to FLog2.  Output Color space is Rec 2020 and Outout Gamut is FLog2. Add a node.  Apply the FLog2 to Classic Chrome LUT Create a combination node from node in steps 2 and 3. Apply a Key to the combination node and adjust the Key Output Gain to get the amount of the combination node that you want applied. So that you do not have to do this over and over again, generate a LUT for the combination node.  Remember to turn off all other nodes before generating the LUT. Hope this helps others. Don  
    • crazyfields
      Please save me from insanity 23mm f2 vs F1.4r

      By crazyfields · Posted

      Thanks for the insights. I think it's really hard to make a decision without having the two side by side! 
×
×
  • Create New...