Jump to content
ken

Interested in auto-focus anamorphic lens

Recommended Posts

EOSHD Pro Color for Sony cameras EOSHD Pro LOG for Sony CamerasEOSHD C-LOG and Film Profiles for All Canon DSLRs
5 hours ago, mjamerson said:

looks interesting.. can you do it on say a 70D using Dual Pixel AF?

I don't know about Dual Pixel AF.  Anything special in auto focus?

Original lens has no flare, but with close up filter, flare added.

Samples with hand hold SLR Magic +1.3x filter.  

spIMG_1344.jpg

spIMG_1390.jpg

spIMG_1399.jpg

Share this post


Link to post
Share on other sites

Filter thread(77mm) added.

samples with CPL filter. 

BTW, the CPL filter (HOYA Silm) also contributes flare.

auto_ana5.jpg

auto_ana7.jpg

spsIMG_1704.jpg

ssIMG_1844.jpg

ssIMG_1853.jpg

Share this post


Link to post
Share on other sites
8 hours ago, artiswar said:

But what's happening optically?! This distortion is gorgeous. 

In my comparison test, the lens actual horizontal view angle equals to 21mm.  So basically, even wider then most 1.33x lens.  Some perspective distortion is must, comparing to 1.33x lens with widest setting, not much difference. 

The image quality is basically the same as ISCO or Schneider lens.  Much better then most 1.33x lens.  I post a high resolution sample here at F2.8, wide open shoot.

hdIMG_1801.jpg

Share this post


Link to post
Share on other sites

Very cool stuff, so you merged together a Canon EF 40mm STM and a Cinelux ES 2x and now you have a working FF autofocus setup?

How did you manage to align all of the elements so precisely, I'm guessing this is more involved than a it seems. Did you need any specialist gear or was it all done by hand?

Are you going to post instructions or a tear down so that others can try it out too?

Share this post


Link to post
Share on other sites
15 hours ago, rbbayliss said:

Very cool stuff, so you merged together a Canon EF 40mm STM and a Cinelux ES 2x and now you have a working FF autofocus setup?

How did you manage to align all of the elements so precisely, I'm guessing this is more involved than a it seems. Did you need any specialist gear or was it all done by hand?

Are you going to post instructions or a tear down so that others can try it out too?

Alignment is easy.  First adjust only rear lens, you still can find a horizontal flare, but very short.  Magnifying LCD to see it clear and adjust to the best.  Then after mounting front lens, adjust front lens only. 

The key here is the rear lens is not from the front lens, which you noticed it.  So I need to destroy two anamorphic lenses.

Each manufacturer design the front lens and rear lens has different diopter factor approach.  So we can try different combination to get wider or shorter at focus point.

And also need to find the way to mount the front lens become non movable.  If set up ok, that is real single focus.  And no extra glass, the image quality is identical as dual focus setup.

 

 

auto_ana6.jpg

auto_ana3.jpg

Share this post


Link to post
Share on other sites

Wow, thanks for the extra photos. What was the lens that you used for the rear element?

I like your approach, even if it sounds like a lot of trial and error would be involved. ; )

I recently recalibrate the rear element on my 16F to get it sharper, the required adjustments are very very small. so I suspect the slight blur on the right side of your photos are due to the alignment (not the rotation, but the z-space alignment) - or do you see this as symmetric in the uncropped output?

Using the Cinelux as the front element makes sense to me. I find mine pretty super sharp - I typically pair it with the Canon 100mm Macro as the macro lenses have longer focus throw - which is also why manual lenses are great as taking lenses...

Btw, Did you have to cut the cinelux? (I haven't taken mine apart so not sure if that's just the front). 

Share this post


Link to post
Share on other sites
1 hour ago, rbbayliss said:

Wow, thanks for the extra photos. What was the lens that you used for the rear element?

I like your approach, even if it sounds like a lot of trial and error would be involved. ; )

I recently recalibrate the rear element on my 16F to get it sharper, the required adjustments are very very small. so I suspect the slight blur on the right side of your photos are due to the alignment (not the rotation, but the z-space alignment) - or do you see this as symmetric in the uncropped output?

Using the Cinelux as the front element makes sense to me. I find mine pretty super sharp - I typically pair it with the Canon 100mm Macro as the macro lenses have longer focus throw - which is also why manual lenses are great as taking lenses...

Btw, Did you have to cut the cinelux? (I haven't taken mine apart so not sure if that's just the front). 

Please refer to this thread, they are the same lenses as this auto focus mods: 

 

Yes, I need to cut cinelux several times, shorter and shorter to make it better.

The previous manual single focus mainly drawback is no aperture control, so I gave up.  But the ISCO's  mechanism is really good, it is an internal focus type.

 

Share this post


Link to post
Share on other sites

Modify again by adding a negative diopter in side, better accurate focus at infinity, not so wide, measured view angle equals to about 24mm, but distortion improved.  Edge IQ might be not so good.  But still much better than 1.33x lens I used before.  Flares are funny.

spIMG_2551.jpg

spIMG_2574.jpg

ssIMG_2371.jpg

spsIMG_2386.jpg

ssIMG_2323.jpg

ssIMG_2404.jpg

Share this post


Link to post
Share on other sites
On 5/29/2016 at 11:23 PM, ken said:

Alignment is easy.  First adjust only rear lens, you still can find a horizontal flare, but very short.  Magnifying LCD to see it clear and adjust to the best.  Then after mounting front lens, adjust front lens only. 

The key here is the rear lens is not from the front lens, which you noticed it.  So I need to destroy two anamorphic lenses.

Each manufacturer design the front lens and rear lens has different diopter factor approach.  So we can try different combination to get wider or shorter at focus point.

And also need to find the way to mount the front lens become non movable.  If set up ok, that is real single focus.  And no extra glass, the image quality is identical as dual focus setup.

 

 

auto_ana6.jpg

auto_ana3.jpg

 

Wow,great modification!

 

I've got a cinelux es,too. How can I dissemble it ? Loose all the screws I can find.....

thx~

Share this post


Link to post
Share on other sites
On 5/31/2018 at 8:30 AM, conaneva said:

 

Wow,great modification!

 

I've got a cinelux es,too. How can I dissemble it ? Loose all the screws I can find.....

thx~

my mod is just cut it.  if you need to take out front lens, besides loosing screws, you need to soften epoxy points by heat gun.

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.   Restore formatting

  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.


×
×
  • Create New...