Tokina atx-i 100mm F2.8 FF MACRO PLUS is listed for Canon EF with Full frame coverage. Its verified front filter size is Ø55 mm. 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 |
|---|---|
| Maker model code | atx-i 100mm F2.8 FF MACRO PLUS |
| Mount | Canon EF |
| Image format | Full frame |
| Front filter thread | Ø55 mm |
| Model ID | tokina-atx-i-100mm-f2-8-ff-macro-canon-ef |
| Focal length | 100 mm |
| Maximum aperture | f/2.8 |
| Filter attachment type | screw_in |
| Weight | 18.5 oz (approx.; 525 g maker value) |
| Length | 3.86 in (approx.; 98 mm maker value) |
| Maximum barrel diameter | 73 mm |
| Closest focus | 0.98 ft (approx.; 0.3 m maker value) |
| Maximum magnification | 1× |
| Lens AF hardware | Maker states yes |
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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 EF designation on the camera specification, then verify the exact model code and mount variant against its support page. The maker lists a 100 mm focal range and f/2.8 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.
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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.