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crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Lawrence Lau
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| + | [title] Freeing the power diaphragm unit |
|---|---|
| + | [* black] Once the barrel is freed, the rest of the assembly comes apart once the pieces are rotated - they are 'nested' within helical tracks inside each 'shell' |
| + | [* black] Before you disassemble it, note carefully how each 'layer' is nested within the next one. Otherwise it will take a lot of trial-and-error to put it back. |
| + | [* black] The focussing ring assembly also 'drops out'. To re-assembleit, align the 3 tabs in the barrel with the slots in the inner helicoid (inner part of the focussing ring), then turn it 45º. |
| + | [* black] During re-assembly, ensure that: 1. the ribbon cable doesn't get snagged. 2. the white focusing gear needs to sit into the black pillar (highlighted in step 4) |
| + | [* black] Useful document: [http://allphotolenses.com/public/files/pdfs/2678849ec46af2a434c5ad79fd044100.pdf|Parts Catalog for Canon EF 35-80mm III Lens] |
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