Specifications#
- Brand
- Tamron
- Model
- 70-300mm F4.5-6.3 Di III RXD
- Lens type
- Telephoto zoom
- Focal length
- 70–300 mm
- Maximum aperture
- f/4.5–6.3
- Image circle
- Full frame (36×24 mm)
- Mount(s)
- Sony E-mount, Nikon Z
- Projection
- Rectilinear
- Autofocus motor
- stepping (RXD)
- 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 70 mm | At 145 mm | At 300 mm | Equiv. aperture (DoF) |
|---|---|---|---|---|
| Full frame | 70 mm · 34° | 145 mm · 17° | 300 mm · 8° | f/4.5 |
| APS-C | 105 mm · 23° | 218 mm · 11° | 450 mm · 5° | f/6.8 |
| APS-C (Canon) | 112 mm · 22° | 232 mm · 11° | 480 mm · 5° | f/7.2 |
| Micro Four Thirds | 140 mm · 18° | 290 mm · 9° | 600 mm · 4° | f/9.0 |
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: 85 mm f/5.6 on full frame.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 70 mm | f/4.5 | 5.1 cm | 21.3 cm | 1.38 m | 5.91 m | 36.4 m | 1.6% |
| 70 mm | f/8 | 9.1 cm | 38.2 cm | 2.56 m | 12.7 m | 20.5 m | 0.9% |
| 145 mm | f/4.5 | 1.1 cm | 4.8 cm | 31.2 cm | 1.27 m | 156 m | 7.0% |
| 145 mm | f/8 | 2.0 cm | 8.5 cm | 55.6 cm | 2.28 m | 87.7 m | 3.9% |
| 300 mm | f/4.5 | 0.2 cm | 1.0 cm | 7.1 cm | 29.1 cm | 667 m | 32.7% |
| 300 mm | f/8 | 0.4 cm | 1.8 cm | 12.5 cm | 51.8 cm | 375 m | 18.4% |
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 70 mm | NPF at 70 mm, f/4.5 |
|---|---|---|---|
| Full frame | 1/320 s | 7 s | 5 s |
| APS-C | 1/500 s | 5 s | 4 s |
| APS-C (Canon) | 1/500 s | 4 s | 4 s |
| Micro Four Thirds | 1/640 s | 4 s | 4 s |
Compatible cameras#
Bodies in our database with a native Sony E-mount and Nikon Z mount.
- Sony α7R VI 2026
- Nikon Z5II 2025
- Sony α7 V 2025
- Nikon ZR 2025
- Sony ZV-E10 II 2024
- Sony α1 II 2024
- Sony α9 III 2024
- Nikon Z50II 2024
- Nikon Z6III 2024
- Nikon Z8 2023
- Nikon Zf 2023
- Sony α6700 2023
- Sony ZV-E1 2023
- Sony α7C II 2023
- Sony α7CR 2023
- Sony α7R V 2022
- Nikon Z30 2022
- Sony FX30 2022
- Sony FX3 2021
- Sony ZV-E10 2021
- Sony α1 2021
- Nikon Z9 2021
- Nikon Zfc 2021
- Sony α7 IV 2021
- Sony α7S III 2020
- Nikon Z5 2020
- Nikon Z7II 2020
- Nikon Z6II 2020
- Sony FX6 2020
- Sony α7R IV 2019
- Nikon Z50 2019
- Sony α6400 2019
- Sony α6600 2019
- Sony α6100 2019
- Nikon Z6 2018
- Nikon Z7 2018
- Sony α7 III 2018
- Sony α6300 2016
- Sony α6500 2016
- Sony α7R II 2015
Adapt it to other systems#
Similar lenses#
- Sony FE 70-200mm f/2.8 GM OSS f/2.8
- Sony FE 70-200mm f/4 G OSS f/4
- Sony FE 70-300mm f/4.5-5.6 G OSS f/4.5–5.6
- Nikon Nikkor Z 70-180mm f/2.8 f/2.8
- Nikon Nikkor Z 70-200mm f/2.8 VR S f/2.8
- Sigma 70-200mm F2.8 DG OS HSM | S f/2.8
- Sony E 70-350mm f/4.5-6.3 G OSS f/4.5–6.3
- Tamron 70-180mm F/2.8 Di III VC VXD G2 f/2.8
- Tamron 70-180mm f/2.8 Di III VXD A056 f/2.8
- Sony E 55-210mm f/4.5-6.3 OSS f/4.5–6.3
- Nikon Nikkor Z DX 50-250mm f/4.5-6.3 VR f/4.5–6.3
- Nikon Nikkor Z 100-400mm f/4.5-5.6 VR S f/4.5–5.6
Frequently asked questions#
Is the Tamron 70-300mm F4.5-6.3 Di III RXD full frame?
Yes — it covers the full 36 × 24 mm frame.
What is the Tamron 70-300mm F4.5-6.3 Di III RXD equivalent to on APS-C?
On a 1.5× APS-C body it frames like 105–450 mm, and like 112–480 mm on Canon APS-C.
What is the Tamron 70-300mm F4.5-6.3 Di III RXD good for?
As a telephoto zoom it suits sport, wildlife, events and compressed landscapes.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources