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PL Mount 11-16mm f2.8 Prototype, Manual Iris

M

Matt Uhry

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Prototype of PL Remounted Tokina 11-16 f2.8, Manual Iris.

10_1236919197.jpg


The Good News:
The lens is well built, holds focus over it's 1.4x zoom range
very little breathing, very little image shift when racked.
Sharp, Low distortion, good field illumination, good flare resistance.

The Not Exactly Good but not too bad:
The modified Iris change very fast - not much rotation. It would be quite expensive and complicated to fix this. Not really enough space to mark every stop... It's not a big problem for the Red, you can easily get it exactly to the stop you desire. (*** UPDATE- DR. LENS HAS FIGURED THE IRIS OUT ***)

Nikon Focus direction ( backwards from most other lenses )

It's up at Chez Duclos getting it's gears and then will be anodized black.

It might be possible to make more of them. Price is TBD, still trying to figure it out, should be below $3,250. It could go down substantially with larger quantities.

How much interest is there in this ? It's probably going to be a one shot deal so if you're interested this is the chance.

Matt Uhry
www.mattuhry.com
 
If the price is right, I'm definitely interested. I'm not sure just what the right price would be, I would have to think on that a bit. But ~$3K doesn't seem too out of line, depending on the quality of conversion. I would think it could definitely drop quite a bit from there if there were a dozen orders or more.

Edit> Who is doing the PL conversion?
 
This sounds awesome!

Pardon my ignorance, but I just looked up this lens and new it goes for $569. Does it really cost over $2500 just to hack off the back, put a PL mount on it and a few gears?

If it was down in the $1500 range I'd be very interested.
 
great job Matt, I got the same lens, but can't find the tech engineer to fix it.
 
Does it really cost over $2500 just to hack off the back, put a PL mount on it and a few gears?
Click to expand...

Yes. first of all, you need many thousands of dollars worth of tools to do the work, and second there is a bunch of time involved. Really tight tolerance machining is an art (also the time to learn the skill). CNC machines don't compensate for cutter deflection or wear, so It really is a fit by hand type of operation. There are machines that can hit these tolerances, but they are stupid expensive. Plus, there is the whole if you fuck up even just a little, start over factor. If you take off an extra thousandth of an inch there is no putting it back on. Start over.

Nick
 
Shawn Nelson said:
Pardon my ignorance, but I just looked up this lens and new it goes for $569. Does it really cost over $2500 just to hack off the back, put a PL mount on it and a few gears?

If it was down in the $1500 range I'd be very interested.
Click to expand...

Go for it Shawn ! Get a hacksaw ! There is no chance whatsoever of it being sold for that price.

The people that I'm hoping to get involved, Machinists, Designers and Dr. Lens are skilled and experienced, have business costs, want to make a fair wage. They also all have plenty of other projects to do if not given a suitable incentive to work on this one.

Matt Uhry
www.mattuhry.com
 
Matt Uhry said:
Go for it Shawn ! Get a hacksaw ! There is no chance whatsoever of it being sold for that price.

The people that I'm hoping to get involved, Machinists, Designers and Dr. Lens are skilled and experienced, have business costs, want to make a fair wage. They also all have plenty of other projects to do if not given a suitable incentive to work on this one.

Matt Uhry
www.mattuhry.com
Click to expand...

hey, i said 'pardon my ignorance' there.
 
Wow, looks amazing!

Please post shoots with it, some motion and some stills. :whistling:

Congrats for the job!
 
wow, definitely interested!

after all that "too expensive, not possible, why would you want that ..." this is very inspiring.

congrats - regards,
martin
 
Very interesting.

I could do almost the the same with Tokina 11-16 Nikon G version using

Nikon G to Canon EF adaptor from 16:9

either on Birger, Alesniak or IMS (best option) mounts.

Manual iris guaranteed, no PL mount but... have another better options.

"For those who find the concept of rotating the lens in its adaptor too unconenventional,
the Lever-Operated version locks the lens and adaptor into fixed positions and actuates the diaphragm via
a control ring installed inside the adaptor. A control switch mounted on the outside perimeter of the adaptor
permits any aperture to be selected."

NikonGtoEOSadapter1.jpg
 
Hey Matt -

Fantastic work!!

Need a partner in making these up? I think I can offer a 303 stainless version.
 
Shawn Nelson said:
This sounds awesome!

Pardon my ignorance, but I just looked up this lens and new it goes for $569. Does it really cost over $2500 just to hack off the back, put a PL mount on it and a few gears?

If it was down in the $1500 range I'd be very interested.
Click to expand...
well said.
 
Matt Uhry said:

Prototype of PL Remounted Tokina 11-16 f2.8, Manual Iris.

It's up at Chez Duclos getting it's gears and then will be anodized black.

How much interest is there in this ? It's probably going to be a one shot deal so if you're interested this is the chance.

Matt Uhry
www.mattuhry.com
Click to expand...

Hi,

this one is very interesting! Maybe, you could put up some pics of the lens once it's done, and have Duclos make an official offer?

Please make a small review once you tested it.:shifty:

Thank you,

Jeff
 
Shawn Nelson said:
PDoes it really cost over $2500 just to hack off the back, put a PL mount on it and a few gears?
Click to expand...

Shawn, I've spent many hours finding a swiss made hack saw and taking classes to learn the proper technique when hacking lenses with a saw.
It's taken be years to become efficient with a hack saw.
It used to be cheaper back in the day when everyone was using butcher knives, but it was sloppy and took a lot longer.
Now that we have access to high quality saws, we can properly hack lenses apart and slap mounts on them.
(Im just messing with you, ignorance pardoned.)

The lens is in fact here in our shop and is being studied as I type this.
We have several ideas and could likely make this lens quite nice.
Matt, I wish you hadn't shown a picture in it's "Frankenstein stage" lol.
But I guess people wouldn't believe it otherwise. After all, we don't have any renders to shell out. :)
 
Matthew Duclos said:
Matt, I wish you hadn't shown a picture in it's "Frankenstein stage" lol.
But I guess people wouldn't believe it otherwise. After all, we don't have any renders to shell out. :)
Click to expand...


I think I said the picture was a prototype ? That way your final version will look so much prettier.

Matt Uhry
www.mattuhry.com
 
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