SPIDERTECH
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LENS FOUNDRY
Optics bay //
online
TTY
Optical layout
Sample frame
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Spider · L-mount
24–70mm F2.8
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Category
Mirrorless
Broadcast
Cinema
Wildlife
Macro
Vintage
Front of lens
Lens hood
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Hood style
Matte box size
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Optics
Prime
Zoom
Focal length
Wide end
Tele end
Zoom position
Barrel extends when zooming
Inner tube slides out toward the tele end
Parfocal
A compensator group rides a cam to hold focus while zooming. Off makes it varifocal: refocus after zooming.
Aperture
Maximum aperture
Variable aperture
Slows down as you zoom in
Maximum at tele
Minimum aperture
Aperture ring
Clicked ring with engraved stops
Iris
Blades
Rounded blades
Keeps highlights circular for the first stops
Stopped down to
Iris
Highlight shape
Focus & stabilisation
Autofocus
Adds an AF/MF switch
AF motor
Stepper
Ring ultrasonic
Linear
Screw drive (body motor)
Focus
Or drag the focus ring on the model
Optical stabilisation
Adds a stabiliser switch
Ring grips
Focus ring
Zoom ring
Iris ring
Body
Mount
Barrel material
Finish
Accent ring
Weather sealing
Rubber gasket at the mount
Engraved maker name
DIY build
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Resin replica
Off-the-shelf parts
Elements · front to back
Download element data (.json)
Parts
Tools
Build steps
What to expect