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The Diopter Thread.


Tito Ferradans
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On 4/27/2019 at 6:00 AM, Rikoshet said:

Is it possible to put the single focus element not in front of anamorphic lens BUT between the taking lens and anamorphic. It would be easier for focus pulling and matte box usage.

Thank you!

nope. that's not how the optics work. ;)

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On 4/27/2019 at 6:00 AM, Rikoshet said:

Tito, asking, you're a guru! Is it possible to put the single focus element not in front of anamorphic lens BUT between the taking lens and anamorphic. It would be easier for focus pulling and matte box usage.

Thank you!

Heya! No, that won't work because optics don't work that way. :)

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Hello everybody, I'm selling a couple of diopters. They are all in good shape (Tokina and Tamron nos). 

- 72mm Kaiser +1

- 72mm Pallas (made in Japan) +1

- 67mm B+W 0.5

-55mm Kenko achromat 0.0

-72mm Tamron (threaded!) 0.5

-72mm Tokina 0.5

I don't have a clue about pricing. I consider Tito's list from page one outdated?! So just drop me a line when you are interested.

 

 

 

diopter.jpg

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I found a set of 46mm +0.25 and +0.5 dpts close up lens on ebay if anyone needs that: ebay.de

I ordered the same in Series 8 size (https://www.apotelyt.com/photo-accessory/series-filters) I think their outer diameter is about 63mm but they are not threaded, it'll probably be to small for my lens so I might sell them in the next few days, PM me if you're interested. 

I sourced an optician that can provide me a +0.25 diopter 65mm glass element but I have no idea how I could attach that to my lens, any one has experience with custom glass element holder / clamp ?

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Hi everyone, i'm having a hard time distinguishing between the many types of closeup lens attachements. I have an aivascope anamorphic adaptor with an 82mm front thread. It focuses to about 1m away, but I would love to have an adaptor to do extreme closeup macro shots (within 1') of the lens.

I've seen closeup lens filters for as little as $3 all the way to $200 for the Hoya set, all claiming to do the same thing. Can anyone explain why there is such a variance in price? Is there nothing available for around $50 that will do the trick well enough?

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5 hours ago, 026163 said:

Hi everyone, i'm having a hard time distinguishing between the many types of closeup lens attachements. I have an aivascope anamorphic adaptor with an 82mm front thread. It focuses to about 1m away, but I would love to have an adaptor to do extreme closeup macro shots (within 1') of the lens.

I've seen closeup lens filters for as little as $3 all the way to $200 for the Hoya set, all claiming to do the same thing. Can anyone explain why there is such a variance in price? Is there nothing available for around $50 that will do the trick well enough?

http://www.tferradans.com/blog/?p=7282

Here's some info on the price/quality variance

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  • 4 months later...

A very short extension tube turns ONLY your spherical lens into a macro one.
The anamorphic adapter is an entirely independent optical block and therefore is not affected by it.

If you put a diopter in front of the entire setup (assuming it's properly focused, meaning: you can get a sharp image from it), then it acts globally.

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