Jump to content
konzy

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

Recommended Posts

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

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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!

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...