=====Sigma Cine Zoom 50-100mm T2.0 ===== 
{{ :lens:sigma-zoom-50-100mm.png?direct&400|}}
==== Summary ====
==== Tech Specs ====
| Manufacturer    |Sigma|
| Series          |Cine|
| Model           |-|
| Focal Length    |50-100mm|
| Max Aperture    |T2.0|
| Min Aperture    |T16|
| Format          |Super 35|
| Image Circle    |28.4mm|
| Minimum Focus   |38 in.|
| Focus Rotation  |-|
| Iris Blades     |9|
| Optical Design  |-|
| Squeeze         |none|
| Front Diameter  |95mm|
| Filter Thread   |82mm|
| Focus/Zoom Rod  |n/a|
| Native Mount    |PL, EF, E|
| Data Protocol   |-|
| Length          |6.6 in.|
| Weight          |1828 g|
| Body Telescope  |none|
| Body Material   |Aluminum|
| Focus Drive     |Manual|
| Iris Drive      |Manual|
| Zoom Drive      |Manual|
==== History ====
Country of Origin: Japan \\
Release Date: - \\
Launch Price: - \\
Design Revisions:\\

==== Service ====
<nodisp 8>
Service Manual: [[staff:servicedb:SigmaCinezoom|Disassembly/Re-assembly]] \\
Screws: [[staff:servicedb:sigmaparts|]]\\
\\
Full CLA: **6-8hrs.**\\
I+Z C/L: **3-4hrs.**\\
Re-Collimate tele and wide: **2hrs.**\\
T+S rear housing: **2hrs.**\\
<wrap note>screws located underneath iris mechanism come loose. must remove rear grp and iris mech to access.</wrap>\\
T+S Focus witness/focal length engraved ring: **3 hrs.**\\
<wrap note>Must remove iris, zoom scale, focal length engraved ring and rear optical housing to access and secure screws in witness ring.</wrap>\\
T+S Focus scale: **1 hr.**\\
<wrap note>Focus scale screws are accessible from the front by first removing the front engraved ring **(Pentalobe #4 screws, NOT torx!)**.</wrap>\\
C+A front optics only: **4-6hrs.**\\
Field adjustment: **4-6hrs.**\\
<wrap note>50-100mm has 2 sets of eccentric rollers in zoom section stacked on each other (seen through circular through holes to access under zoom scale. front and rear zoom groups each have 3 rollers, 2 of which are eccentric, one is not.
zoom rollers towards front of lens appear to affect field. 
zoom rollers towards rear of lens may affect image as well. not confirmed </wrap>\\
Disassemble w/o C/L: **3-5hrs.**
<wrap note>If focus, zoom and iris feel good/have no damaged parts, these can be removed as a unit so C/L is not necessary. increase hours for image shift.  increase time if optical groups need to be removed.</wrap>\\			
</nodisp>

==== Notes ====
==== Media ====