200 mm
Focal length
f/3.5
Maximum aperture
12°
Diagonal angle of view (Full frame)
Full frame
Designed for
Specifications#
- Brand
- Tamron
- Model
- 200mm f/3.5 CT-200 BBAR
- Lens type
- Telephoto prime
- Focal length
- 200 mm
- Maximum aperture
- f/3.5
- Image circle
- Full frame (36×24 mm)
- Mount(s)
- Tamron Adaptall
- Projection
- Rectilinear
- Lensfun correction profile
- Yes — distortion/vignetting/TCA
Equivalent focal length on different cameras#
Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).
| Camera format | At 200 mm | Equiv. aperture (DoF) |
|---|---|---|
| Full frame | 200 mm · 12° | f/3.5 |
| APS-C | 300 mm · 8° | f/5.2 |
| APS-C (Canon) | 320 mm · 8° | f/5.6 |
| Micro Four Thirds | 400 mm · 6° | f/7.0 |
Depth of field & background blur#
Computed on its native Full frame format (CoC 30 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 200 mm f/4 on full frame.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 200 mm | f/3.5 | 0.4 cm | 1.9 cm | 12.6 cm | 51.5 cm | 381 m | 17.6% |
| 200 mm | f/4 | 0.5 cm | 2.2 cm | 14.4 cm | 58.9 cm | 334 m | 15.4% |
| 200 mm | f/8 | 1.0 cm | 4.3 cm | 28.8 cm | 1.18 m | 167 m | 7.7% |
Handheld & night-sky limits#
NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).
| Body | Min. handheld shutter (longest focal) | 500 rule at 200 mm | NPF at 200 mm, f/3.5 |
|---|---|---|---|
| Full frame | 1/200 s | 2 s | 2 s |
| APS-C | 1/320 s | 2 s | 1 s |
| APS-C (Canon) | 1/320 s | 2 s | 1 s |
| Micro Four Thirds | 1/400 s | 1 s | 1 s |
Adapt it to other systems#
Frequently asked questions#
Is the Tamron 200mm f/3.5 CT-200 BBAR full frame?
Yes — it covers the full 36 × 24 mm frame.
What is the Tamron 200mm f/3.5 CT-200 BBAR equivalent to on APS-C?
On a 1.5× APS-C body it frames like 300 mm, and like 320 mm on Canon APS-C.
What is the Tamron 200mm f/3.5 CT-200 BBAR good for?
As a telephoto prime it suits sports, wildlife and stage photography.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources