Canon RF1200mm F8 L IS USM is listed for Canon RF with image coverage not yet established in this record. A front screw-in filter size is not established by the checked evidence, so no diameter is recommended. The supplied research links this exact mount variant to manufacturer evidence. Body-specific AF, crop and adapter behavior remain separate checks.
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Verified specifications
| Field | Value |
|---|---|
| Mount | Canon RF |
| Image format | Not verified |
| Front filter thread | Not specified in checked source |
| Model ID | canon-rf1200mm-f8-l-is-usm-canon-rf |
| Focal length | 1200 mm |
| Maximum aperture | f/8 |
| Filter attachment type | drop_in |
| Weight | 117.8 oz (approx.; 3340 g maker value) |
| Length | 21.14 in (approx.; 537 mm maker value) |
| Maximum barrel diameter | 168 mm |
| Closest focus | 14.11 ft (approx.; 4.3 m maker value) |
| Maximum magnification | 0.29×; see maker conditions below |
| Lens AF hardware | Maker states yes |
| Optical stabilization | Maker states yes |
The reported maximum magnification is conditional: 0.29. Do not substitute a 35 mm-equivalent figure or a teleconverter configuration for the bare-lens value.
Compare camera lenses listings
Compare the exact model code and rear mount in each listing. Amazon results may contain another mount or generation; the search is not a compatibility verdict.
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Search camera lenses on AmazonChoosing a camera
Look for the Canon RF designation on the camera specification, then verify the exact model code and mount variant against its support page. The maker lists a 1200 mm focal range and f/8 maximum aperture. A physical mount match is a starting point; still AF, movie AF, crop behavior, stabilization and firmware need separate checks.
Choosing a filter
A circular screw-in filter with a matching documented thread size is only a mechanical candidate. Magnetic filters, wide frames and stacked rings need separate system and vignetting checks. When no front thread is specified, do not buy a size from the focal length or barrel diameter.
This model cannot enter the diameter calculator until a verified front thread or dedicated holder specification is available.
Hoods, caps and other maker-listed parts
“Supplied” describes the maker’s package statement for this exact lens record. A merely related part may be sold separately, and neither label establishes cross-generation interchangeability.
| Part code | Maker label | Relationship |
|---|---|---|
| E-185C | E-185C | Maker lists as related; inclusion not established |
| ET-160 / ET160B | ET-160 / ET160B | Maker lists as related; inclusion not established |
| LS1200 | LS1200 | Maker lists as related; inclusion not established |
Keep exploring
Official sources and scope
Checked for this reference on October 30, 2026. Product firmware and support lists can change; inspect the current maker page for your exact revision.