F5: Quick optitek adaptor for Nikon lenses on sony F3 - F5 - F55

Sparky874

Sparky874

Well-known member
Hi. My Optitek Nikon adaptor arrived this morning for my Sony F5. Great build quality. Just a quick question. The turning distance for the aperture control seems very 'small', is this right? There are no instructions as such but I think I'm doing it right. You can loosen and tighten a small red screw to adjust the resistance of the wheel but this doesn't seem to make much difference? Does anyone using a Nikon one have any advice? Thanks as ever.
Sparky
 
Thank you for the purchase. I'm glad you like it.
The red knob is actually used to loosen the scale and slip it to fine tune the iris calibration. It also serves as way to tighten and the iris control in some degree.
To fine tune the iris calibration mount the lens, turn the iris till lens is wide open , note the f-stop on the lens, loosen the red knob and slip the iris scale (if needed) to have the equivalent line on the iris scale line up with the index line.
Tighten the red knob to where the iris control is comfortable resistance. The iris control has decent amount of resistance because the iris mechanism on the lens is spring loaded and would "creep" out of position if the iris ring was too loose.
hope that helps...;)
 
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Many thanks for this assistance. I imagine if the lens doesn't have a manual iris wheel - such as the Tokina 11-16mm it doesn't matter the scale is lined up. It just takes a while to get used to the 'small' movement on the iris wheel going through the full iris range of the lens , F2.8 - F22 for example. Thanks again Mr Optitek!
 
We set them pretty close for any lens but if , for example with your 11-16 Tokina- wide open position on the Optitek does not show the 2.8 mark lined up with the index line on the adapter body you can loosen the red knob and slip the scale to line up precisely. This way you can monitor your stops precisely if needed.
most of the time however our "pre-calibration" is close and you may not even care about monitoring your stops precisely as long as you exposure is correct (when you check the histo, waveform, etc...).
 
As Jacek said - if you do line up the iris ring then you can see what your real f stops are. If you don't care it doesn't matter. If you want to know then its a great feature. I like to know so I line it up. Usually its pretty close for most lenses once you line it up once.
 
Received my Mark II adapter. Does it require external power? (seems like I read somewhere that it doesn't)
If so, where/what cable to get?
Thanks.
 
I guess you figured it out by now.
No external power is needed, lens interface to "Type C" in the camera menu. Press and hold the iris "up" button for 1 second upon lens changes or camera power cycling.
That's all!!!
 
Since no one chimed in I will:
For starters I would like to say that I think MTF makes good products. I'm not very familiar with them because 've never seen one in person.
From the Specs:
Ergonomics: MTF requires external power and a box with LCD display to control lenses.
OptiTek does not.
The ProLock-i mount adapter is self contained. It accepts power from the FZ mount camera contacts.
Mechanical:
MTF is a traditional still camera bayonet mount- much like on Canon still cameras.
OptiTek is not. We effectively transform standard unmodified canon lenses into PL style lenses. The "ProLock" indicates locking mechanism built into the adapter that allows for positive locking of Canon EF lenses thus eliminating the slop or play between the lens and the adapter entirely.
Features:
MTF adapter allows f stops displayed on the separate LCD display.
Optitek pipes the lens data (t-stop and distance)through the FZ camera mount contacts to the camera display and also makes meta data that is included and can be retrieved from the footage files.
The ProLock-i system can be expanded with the optional OptiTron drive by wire Follow Focus (EFF) and/or the wireless receiver to control focus in a very smooth and repeteable manner using the AF motors built into the AF lenses. All that without any external power needed for wired configuration . For wireless the OptiTron controller comes with a removable, rechargeable and replaceable battery. I do not believe MTF offers such an option.
As for the price I don't know the specifics for the MTF . The OptiTek ProLock-i adapter retails for $1750
 
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