Jump to content
Sign in to follow this  

Widest lens for Pocket Blackmagic camera Bolex anamorphot?

Recommended Posts

I'm trying to figure out theoretically what the widest lens I can use with the new Blackmagic Pocket camera AND a Bolex 8/19/1.5 anamorphot.

Would the Voigtlander 17.5mm work? How about the 24? (EDIT: meant the 25)

Thanks for any input.

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

If you know what is the maximum focal length you can use on your current camera, then you know what you can use on the Pocket. Just calculate everything back to fullframe.


For example: my Kowa 2X works on 35mm on my GH2 with 1,86x crop.

35mm x 1,86 = 65,1 (fullframe equivalent)

Divide 65,1 by 3 (cropfactor Pocket Camera) = 21,7mm

Share this post

Link to post
Share on other sites

Now I'm not so sure because 35mm on a my T2i vignettes too much:





50 x 1.6 = 80 (WORKS)

40 x 1.6 = 65 (WORKS)

35 x 1.6 = 56 (VIGNETTE)




28 x 1.9 = 53.2 (WORKS w 16/32)



17.5 x 3 = 52.5 (NOT SO SURE) <----

25 x 3 = 75 (LOOKS GOOD)


But is the above calculation the ONLY way of figuring it out?

Share this post

Link to post
Share on other sites

It also depends on the design of the lens. Some might vignette more than others, it should be a rough guideline.


I'm surprised it works on your GH2 with 53.2mm equivalent, but doesn't work on your T2i with 56mm equivalent.. what 35mm are you using on the T2i?

Share this post

Link to post
Share on other sites

The 35mm on the T2i was the Zeiss 2.0 Distagon. Maybe I should try a different 35mm...?


RE: the GH2; I was referencing itimjim's post above mine (apologies for the confusion). Which is also a different anamorphot, so that may account for the difference too.


It's anyone's guess, I suppose. Just gonna have to drop $1200 to find out!

Share this post

Link to post
Share on other sites

Bolex 8/19/1.5x rear element is 20mm


ok,.. the rear on my shigascope and izukarscope are smaller, 17mm and 19mm respectively.


from here i'll use the focal length of lenses for 35mm still photography to avoid any confusion, so multiply by x2.7 for the field of view:


on a nikon v1 cx sensor which has a crop factor of x 2.7, a 28mm takumar vignettes.


a 35mm takumar doesnt vignette.


i did play with a v1 zoom lens that went from 24-something in the shop and i put my shigascope infront, and it would be ok till about 30mm. after that the vignette starts to appear.

Share this post

Link to post
Share on other sites

16/32 means it has rear aperture of 32mm and was intended for 16mm film

8/19 means it has rear aperture of 19mm and was intended for 8mm film


both are 1.5x and made by Moeller but some say the Bolex ones are higher quality (unproven)


there are 2x models also like 30/2x and 32/2x as well as the bigger cinema projection lenses

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.

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 tompeter
      Blackmagic Pocket Cinema Camera with Micro Four Thirds Lens Mount On Ebay
      Price: $599.95
      Brand: Blackmagic Design
      Storage Type: Removable (Card/Disc/Tape)
      Model: Pocket Cinema Camera
      Media Format: SDXC/SDHC/SD
      Color: Black
      Recording Definition: High Definition
      Type: Professional
    • By Kevin B
      Blackmagic Micro Cinema Camera in Excellent Condition. I only used this in a few test footage scenarios but it wasn’t right for my needs. Included with this will be Davinci Resolve 15 with SD Card and code it came with. The Smallrig BMMCC Cage and Top Handle to keep the camera protected. Another item is the S-Bus cable included. 
      Selling for $950. 
      I have an Aputure v5 monitor and NPF-Battery bridge + Batteries I can include for a higher offer for the complete kit. 

    • By dia3olik
      Hey guys,
      I'm selling a brand new Wooden Camera cage for the BMMCC plus the Wooden Camera PL Mount kit for it.
      Asking price is 300€ for everything ! ! ! !
      I'm in Italy and I can ship to Europe for fair prices and even WW if needed (postal or UPS).
      BTW I also have a SpeedBooster for the Pocket and the Micro, Canon EF lens version for sale in another thread.

    • By Lenscamera
      I have a brand new unopened Blackmagic pocket cinema camera 4k that I bought from B&H. Still in it's wrapped plastic seal from B&H so obviously it includes everything that comes with it. I am thinking/considering going a different route with my camera gear and looking to gauge interest if anyone is looking for one. 
      Let me know if you're interested. 
    • By Sandeepthefifth
      Hey all, I'm looking to shoot a narrative short film with controlled lighting early next year and am thinking about shooting it on my original BMPCC...
      I know, I know. No 4K, terrible low-light, and horrible battery life. But if 1080p was fine, controlled lighting throughout, and an external battery solution, is it better for me to use the original and cancel my 4K pre-order? I could use the money saved to pay for an additional cine prime/actually pay actors a decent wage...
      What would be the advantages in this case of using the 4K over the original?
  • Create New...