Jump to content
Sign in to follow this  
JaeM

Iscorama 54 Aperture test with Achromats & Diopters

Recommended Posts

Hi there - here's a link to download this test:

http://vimeo.com/jaemorrison/iscorama54test01

 

I was interested in seeing what Apertures were sharp with different Achromats & Diopters.

 

Rather than waste even more time cutting a boring video,

I've just uploaded a boring image sequence for you to download and step through frame-by-frame. 

 

The Achromats and Diopters tested were:

 

Redstan +.25 Achromat

Tokina +.4 Achromat

Voightlander Focar A

Voightlander Focar B

And some stacked combinations of the above.

 

Apologies if the test isn't ideal (h264 certainly isn't) - thought it was worth sharing as I've learnt a lot from people posting stuff here.

 

Cheers,

Jae.

 

Share this post


Link to post
Share on other sites
EOSHD Pro Color for Sony cameras EOSHD Pro LOG for Sony CamerasEOSHD C-LOG and Film Profiles for All Canon DSLRs

Hi there - here's a link to download this test:

http://vimeo.com/jaemorrison/iscorama54test01

 

I was interested in seeing what Apertures were sharp with different Achromats & Diopters.

 

Rather than waste even more time cutting a boring video,

I've just uploaded a boring image sequence for you to download and step through frame-by-frame. 

 

The Achromats and Diopters tested were:

 

Redstan +.25 Achromat

Tokina +.4 Achromat

Voightlander Focar A

Voightlander Focar B

And some stacked combinations of the above.

 

Apologies if the test isn't ideal (h264 certainly isn't) - thought it was worth sharing as I've learnt a lot from people posting stuff here.

 

Cheers,

Jae.

Nice one Jae, that will make a good reference guide - since i have the same set up.

Nice to see that the Focars hold up quite well in comparison to the Tokina.

Which Redstan +0.25 do you have - is it a doublet?

 

The only problem is that the Helios 40-2 is v.soft wide open (I love it, but for a test...), have you tried it with something like a Super-Takumar 55mm f1.8 - so far that seems to be my sharpest combo with the 54.

 

Thanks again

Share this post


Link to post
Share on other sites

Yeah, it does go a bit crap wide open, you're right.

I've got some other Helios 58s / Super Taks 50s that I'll do it again on too - just ran out of energy after that one.

Will link a Prores4444 version to this too on a dropbox link.

Yes, it's the doublet from Redstan.

 

I'd be interested to hear what lenses you've found the sharpest combos - had a Mir-1b on a scarlet with this adapter at 4K, was soft round the edges, but in a good way.

Share this post


Link to post
Share on other sites

I'd be interested to hear what lenses you've found the sharpest combos - had a Mir-1b on a scarlet with this adapter at 4K, was soft round the edges, but in a good way.

As I said the Super-Tak 55mm f1.8 & 35mm f3.5 are v.good for sharpness.

 

The Russain lenses can be a bit of a crap shoot quality-wise & the Mir 1b does seem to be the weakest link (still nice though), but have you tried the Mir 24 35mm f2 (it comes in Nikon or M42 & is MC) its much better.

The other Russains that i like are the Tair 11a, Jupiter 9 ( a 85mm f2 - dreamy wide open like the Helios 40-2) & the classic Helios 44-2.

 

The Yashica ML lenses are good on a budget or if you've got the money Zeiss Contax (obviously).

 

I've recently switched cameras to the BM Pocket & have been using a Nikon 24mm f2.8 ai-s which is proving to be excellent (will post a grading test soon), so am really tempted to go the whole hog & get a set. However, I love my Russain lenses & would rather wait a little to see if the Canon EF Speedbooster gets released.

 

On a slightly different note, I got the chance to see the original box for the 54 & it did state that it was optimised to be used with Zoom lenses as well as Primes. So I've been really tempted to try this out with either the Angenieux 35-70mm + speedbooster or the Meteor 5-1 16-69mm f1.9 (a 16mm film lens) - probably the later as its way cheaper & Russain.

 

The Helios 40-2 is a lovely lens & the swirly bokeh wide-open is to die for & a test chart isn't the same as actually filming with it - love it, just can't use it with the Pocket cam.

I've got one of his Angenieux single +0.25, but your doublet really sharpens things up nicely - i was really tempted to get one.

 

Anyways, nice test & thanks for the ProRes version!

Share this post


Link to post
Share on other sites

Thanks for your info, keen to try a set of Nikkors Ai-s on them too,

and that's really interesting that the box said they're designed for zooms.

 

I've updated the vimeo video and dropbox link (probably still uploading) with the following lenses:

 

Asahi Pentax Super Takumar f/1.4, 50mm
Helios 77M-4 f/1.8, 50mm
Helios 44 f/2, 58mm
Helios 44M-4 f/2, 58mm
Helios 40-2 f/1.5, 85mm

 

 

Will keep adding to it as I get through my other lenses - I have the Tair & Jupiter too.

Share this post


Link to post
Share on other sites

Thanks for your info, keen to try a set of Nikkors Ai-s on them too,

and that's really interesting that the box said they're designed for zooms.

 

I've updated the vimeo video and dropbox link (probably still uploading) with the following lenses:

 

Asahi Pentax Super Takumar f/1.4, 50mm
Helios 77M-4 f/1.8, 50mm
Helios 44 f/2, 58mm
Helios 44M-4 f/2, 58mm
Helios 40-2 f/1.5, 85mm

 

 

Will keep adding to it as I get through my other lenses - I have the Tair & Jupiter too.

Thanks for doing this & the time/effort it takes to do it.

Just out of interest, which camera are you using - scarlet or...?

 

The Zoom thing freaked me out & i've seen a couple of posts where people have talked about using Zooms with the 54, but to get it from the horses mouth was reassuring. However, I wouldn't have thought it was that practical, since the 54 isn't the smallest lens & lens support is essential, especially with the tiny Super-Taks. So really need an internal zoom.

 

>

Share this post


Link to post
Share on other sites

Hi Jae!

Thank you very much for your work! Very informative and good to know especially if you are on film and doing tests like these cost you

a lot of money :)

 

 

 

On a slightly different note, I got the chance to see the original box for the 54 & it did state that it was optimised to be used with Zoom lenses as well as Primes.

The 54 was (and still is) often used on Super-8 cameras. Most of these cameras have zooms.

Mostly from Schneider, some Angenieux. The Schneider Optivaron for example is a very sharp lens.

6-66mm F 1.8 and has 62mm thread. The 54 had a step-ring for that size.

 

Maybe I shoulde try my Optivaron for Leitz with an adapter on the GH3...

The Angenieux lenses tend to be softer and have less contrast

Share this post


Link to post
Share on other sites

Here's a new link to an updated prores4444 version:

https://www.dropbox.com/sh/ef7ov6o5x52i14y/R6cSuFmo-c

and Vimeo link:

https://vimeo.com/88869240

 

ANAMORPHIC ADAPTER: 
Iscorama 54

ACROMATIC DOUBLETS / DIOPTERS:
Redstan +.25 Achromat
Tokina +.4 Achromat
Voightlander Focar A Diopter
Voightlander Focar B Diopter

LENSES
Carl Zeiss Jena DDR Flektogon f/2.4, 35mm
Mir-1B f/2.8, 37mm
Asahi Pentax Super Takumar f/1.4, 50mm
Helios 77M-4 f/1.8, 50mm
Helios 44 f/2, 58mm
Helios 44M-4 f/2, 58mm
Helios 40-2 f/1.5, 85mm
Helios f/2.8, 135mm
Tair 11a f/2.8, 135mm
Jupiter 6-2 f/2.8, 180mm
Carl Zeiss Jena DDR Flektogon f/2.8, 20mm (Paired with 1.33x Panasonic Ag-La7200)

Share this post


Link to post
Share on other sites

Interesting, I didn't know redstan's doublet had arrived! I think I may have to sell a tokina and buy one.

 

Who's tried one? at .25 you could almost put one on and rarely take it off your anamorphic.

Share this post


Link to post
Share on other sites

Interesting, I didn't know redstan's doublet had arrived! I think I may have to sell a tokina and buy one.

 

Who's tried one? at .25 you could almost put one on and rarely take it off your anamorphic.

whats the focal range (min to max) of a .25 diopter on an isco 54?

Share this post


Link to post
Share on other sites

on further inspection 82mm i'm not sure ithe 0.25 would be a good match for the iscroama 36, you'd need to add step rings which would increase vignette even further (doublets are quite chunky and increase vignette threshold quite a bit already)

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.

Sign in to follow this  

  • Similar Content

    • By Zalem
      - PRICE: $599
      - STRETCH: 2X
      - FOCUS: Double-focus
      - PAYMENT METHOD: Paypal (fees to be paid after initial payment)
      - LOCATION: Switzerland
      - SHIPPING: Not included
      - INCLUDED: Redstan rear adapter with foot support and Redstan front clamp (value = $100).
      - CONDITION: No scratches and no fungus. Clean glass with the exception of a couple tiny spots on the rear glass. A couple of VERY light scratches that are only noticeable under a light source. Body shows some signs of wear but it works perfectly. Coatings are not flamboyant but the lens creates these signature purple/orange flares perfectly well. I wasn't able to get 1000% tack sharp images, so the lens might need to be serviced. It gives reasonably sharp results though, and my issue might actually come from my taking lens. Bought it from a fellow member of the Anamorphic Shooters group on FB and barely used it because of a decrease in filmmaking activity.
      - COMMENTS: I can send some footage via wetransfer. Open to offers.










    • By icarrere
      GH5 and Iscorama pre36. The way I saw Japan in  a 9 days travel.
      Thanks to webrunner 5 for his help.
       
      or
      https://vimeo.com/271896481
    • By brianmcall
      Please let me know if you have an Iscorama to sell. Thanks!
    • By Geoff CB
      Selling my Tokina 28-70 2.6-2.8 in Nikon mount. A great lens for that creamy classic look. 

      Lens was modified by Duclos Lenses, aperture was declicked and focus ring was added. Rear glass is in pristine condition, front element has some minor marks and a tiny chip in the coating. I do not see this in images even stopped down. No fungus or haze. 

      Price includes shipping CONUS.



    • By Hans Punk
      Excellent lens in very good condition, no issues at all.
      Ideally configured for video use - high quality seamless gears for zoom and focus rings have been added (purchased from Helicoptersean), rings can be removed by hand, as they install by friction fit - no tools required. Peli case has its foam plucked to ensure a very snug and secure fit. Comes with Peli 1120 case, Petal sunhood, lens gears, front and rear caps.
      See more detailed pictures for condition in auction here...
      https://www.ebay.co.uk/itm/Tokina-11-16mm-F-2-8-AT-X-PRO-For-Canon-EOS-with-focus-gears-and-peli-case/253656227792
       
       
      Cheers.


×
×
  • Create New...