Jump to content
Tito Ferradans

The Diopter Thread.

Recommended Posts

9 hours ago, Manjeet Singh said:

B&H has the Tamron close up lens for $7... wondering if it is the same glass? 

http://www.bhphotovideo.com/c/product/53497-REG/Tamron_FL71400_Close_Up_Lens_for_Older.html

 

Get it, it's a good price. Nothing special about it, people tend to thing singlets are awful, but they're not. They're not as great as an achromat, but that's pretty much it.

Unless we're talking about $5 kits, from china. These might be bad, at the edges mostly.

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
On May 31, 2016 at 9:22 AM, Timotheus said:

No, they aren't, unfortunately (...as mentioned above ;-)) Could still be useful though.

Here's a list I made a while ago https://docs.google.com/spreadsheets/d/1cEzX4hb0NKbhPetTkVsnORNHeGnji7lhB4OmuCdQC-g/edit?usp=docslist_api

I just picked up a "For Super-Multi-Coated (S-M-C) Takumar-Zoom 85-210mm F4.5" diopter off this list. Doesn't seem to be an achromat and I don't think it's a +0.25. Looks to be more in the +0.3 or +0.4 range, but it was pretty soft compared to the +0.33 Minolta.

Share this post


Link to post
Share on other sites
On 4-6-2016 at 6:04 PM, Evan Burns said:

I just picked up a "For Super-Multi-Coated (S-M-C) Takumar-Zoom 85-210mm F4.5" diopter off this list. Doesn't seem to be an achromat and I don't think it's a +0.25. Looks to be more in the +0.3 or +0.4 range, but it was pretty soft compared to the +0.33 Minolta.

The 0.33 Minolta is nice, achromat also (at least, if it's the one for the 100-500mm zoom). Tito uses it regularly in his videos. I have the 67mm diopter from Asahi Pentax and measured it...indeed 0.33 also. If you want to know precisely how strong your Pentax diopter is, focus on infinity with the diopter attached. Measure the distance from sensor to the focus plane. Diopter strength = 1/(max focus distance in meters). Oh, if you do, let us know, I'll update the list :-) Cheers.

Share this post


Link to post
Share on other sites
On 5/29/2016 at 0:40 PM, Tito Ferradans said:

86mm is hard, but I bet you don't need 86mm since the anamorphic front is smaller. Keep an eye on my youtube channel ( www.youtube.com/tferradans ) as I'll teach cheap diopter tricks over the next two weeks! :) 

just did some tests and a 82mm diopter would work, but a 77mm is too small and causes too much vignetting on 50mm even only using 4:3 area of a super 35 sensor

still looking for a good close up lens recommendation

Share this post


Link to post
Share on other sites
On June 6, 2016 at 5:45 AM, Timotheus said:

The 0.33 Minolta is nice, achromat also (at least, if it's the one for the 100-500mm zoom). Tito uses it regularly in his videos. I have the 67mm diopter from Asahi Pentax and measured it...indeed 0.33 also. If you want to know precisely how strong your Pentax diopter is, focus on infinity with the diopter attached. Measure the distance from sensor to the focus plane. Diopter strength = 1/(max focus distance in meters). Oh, if you do, let us know, I'll update the list :-) Cheers.

 I just picked up the other 67mm Pentax "1:3.5/85~210mm". I'll do some more precise tests after it arrives. I've accumulated quite a few diopters now and I want to test them all at the same time.

Share this post


Link to post
Share on other sites
On 22 juni 2016 at 4:43 PM, Evan Burns said:

 I just picked up the other 67mm Pentax "1:3.5/85~210mm". I'll do some more precise tests after it arrives. I've accumulated quite a few diopters now and I want to test them all at the same time.

Nice, very interested to see the results. There are few good comparisons on actual image quality between diopters. On a side note, can I ask where you found the close up for the 3.5/85-210? The actual zoom and it's accessorries (including the close up) are quite rare (in contrast to the f4.5 version).

Share this post


Link to post
Share on other sites

I have a question regarding diopters for the Slr Magic Anamorphot 2x. I noticed that the 1.33 includes 2 diopters but the 2x does not. I can't find any examples with the 2x using diopters. Are they necessary for semi close up? I'm shooting with it in a couple of weeks and want to make sure I have all options covered. Thanks.

Share this post


Link to post
Share on other sites

The 1.33 doesn't come with the diopters. They're usually sold together, but it's not mandatory. As for the 2x, you can see its performance with the close ups in my review - http://tferradans.com/blog/?p=8331. I'd STRONGLY recommend having diopters for proper results using the Anamorphot 2.0x

Andrew Chan, from SLR Magic, recommended testing another 85mm with the 2x anamorphot, since the Jupiter 9 gave weird results, but I haven't had time to do that yet.

Share this post


Link to post
Share on other sites
2 hours ago, Tito Ferradans said:

The 1.33 doesn't come with the diopters. They're usually sold together, but it's not mandatory. As for the 2x, you can see its performance with the close ups in my review - http://tferradans.com/blog/?p=8331. I'd STRONGLY recommend having diopters for proper results using the Anamorphot 2.0x

Andrew Chan, from SLR Magic, recommended testing another 85mm with the 2x anamorphot, since the Jupiter 9 gave weird results, but I haven't had time to do that yet.

Thanks. I'll make sure to use those diopters.

Share this post


Link to post
Share on other sites

I'm thinking about manufacturing some 114mm clamp-on (fast on-and-off) achromatic diopters for the wide-angle anamorphic attachment I'm developing.  Similar to the now-extinct Zeiss Master Diopters.  Also similar to the Leica Macrolux, except larger and less expensive.  Aside from being useful accessories for my anamorphic attachment, would these be of more general interest to readers here?  Thinking about +0.4D, +1.0D and +2.0D .

Share this post


Link to post
Share on other sites

Pretty good item when the math was done. 67mm close up, +0.25
https://goo.gl/MVKMHa

SOURCES.'
http://www.pentaxforums.com/lensreviews/SMC-Pentax-K-85-210mm-F3.5-Zoom-Lens.html - states 67mm threads and 3.5m minimum focus

http://forum.mflenses.com/s-m-c-takumar-zoom-85-210mm-f-4-5-t47546.html - informs 1.9m as the new minimum focus with close up

https://en.wikipedia.org/wiki/Close-up_filter - close up math

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.


  • Similar Content

    • By DIGICHombre
      eBay Listing: http://www.ebay.com/itm/112426475899?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
      Superb close focus lens filter / diopter. Size 72mm filter thread. Increases minimum focus distance in front of lens. Same result as a macro lens or macro extension tube. Purchased 2, selling 2. Both in excellent condition. No scratches or dings. Threads perfectly in tact.
      These are the non-bayonet A9FB version, that come in 72mm filter size. 
      I sought this filter out specifically for shooting video on modified anamorphic lens adapters. Vintage anamorphic lenses typically are handicapped by close focus distances of over 1 meter or more. Stacking 1 or more close-up diopters on the end of your anamorphic can decrease this minimum focus distance. Stacking multiple diopters on top of one another will minimize this close-up focus distance even further, without noticeable distortion.
      +1 lens filter equals roughly .8 meter minimum focus distance.
      +2 lens filter equals roughly .5 meter minimum focus distance.
      These are also wide & slim enough o they don't produce a dark vignette in the edge of the frame. I used step-up/step-down rings to mount to my lens.
      *Be aware you won't be able to rack focus very far, or focus to infinity with this on. It is not a one size fits all solution.
      I'm told these adapters replicate what a Tokina +.4 achromat diopter can do at much less the price.
      Payment via PayPal only. Questions welcome.
       


    • By EnzoNgu
      Hi Guys,
                   I'm looking to purchase a set of Voigtlander 95mm Focar A or B diopters to use with an Iscorama 54. Hoping someone has a set for sale as Ebay hasn't listed any lately. I just joined the forum after reading the posts for quite some time. Thanks in advance.
      -Enzo
    • By brianmcall
      Hey everyone, I'm looking to buy a Helios 44m-7 lens.  I don't trust ebay with this lens as it looks like most are switched plate fakes, unless you know of a reputable seller with one.  Also looking to pick up a Tokina +0.4 Diopter, if anyone would like to part with theirs.  Thanks!
    • By Sean Keen
      Selling some lomo and foton diopters, photos  on request 
       
    • By harharj
      Can some explain to me why +0.4 and +0.5 diopters are more desirable than +1 diopters? Are +1 diopters terrible? I would assume using +1 would grant the user the the option of being able to shoot at the distance a +0.5 allows and closer since its +1. Maybe someone can enlighten me on the pros and cons of each diopter strength.
×
×
  • Create New...