
Tamron 70-300mm F/4.5-6.3 Di III RXD for Sony Mirrorless Full Frame/APS-C E-Mount (Tamron 6 Year Limited USA Warranty), Black
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AI Verdict
This 1.2-pound, 70-300mm f/4.5-6.3 telephoto zoom lens with RXD autofocus is for Sony E-mount users prioritizing portability and reach over a fast aperture or in-lens stabilization.
This lens is a strong fit for Sony E-mount users who need a lightweight telephoto zoom for daylight shooting and have a camera with in-body image stabilization. Its 1.2-pound weight and 70-300mm range make it highly portable for travel and general outdoor use.
If you frequently shoot in low light or need stronger stabilization, look for lenses with a wider constant aperture (e.g., f/2.8) or built-in optical stabilization (OSS/VC).
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Pros
- Weighs only 1.2 pounds (19.2 oz), making it the world's lightest 70-300mm full-frame mirrorless zoom lens.
- Measures 5.8 inches long with a 77mm maximum diameter, contributing to its compact form factor.
- Features 15 elements in 10 groups, including a high-precision LD element, for resolving power.
- Equipped with an RXD (Rapid eXtra-silent stepping Drive) motor for fast and quiet autofocus.
- Constructed with moisture-resistant features for outdoor use.
- Offers up-close shooting performance with a minimum object distance of 31.5 inches at 70mm and 59.1 inches at 300mm.
Cons
- Lacks in-lens image stabilization (VC/OSS), relying solely on camera body IBIS.
- Maximum aperture of f/6.3 at 300mm is slow, requiring higher ISO in challenging light.
- Does not include a physical AF/MF switch on the lens barrel.
- Absence of a lens lock mechanism, though some users report no lens creep.
- Not ideal for low-light photography due to its slower aperture.
Dimension Scores
The lens uses 15 elements in 10 groups, including an LD element, and users report sharpness in good light, especially for its price point.
The RXD stepping motor delivers fast and quiet autofocus, capable of keeping up with moving subjects.
While the RXD motor is quiet for video, the lack of in-lens stabilization means handheld video will rely entirely on camera IBIS, which can be less effective at 300mm.
Weighing 1.2 pounds and measuring 5.8 inches long, it's marketed as the world's smallest and lightest 70-300mm full-frame mirrorless zoom lens.
Best For
- Travel photography where minimizing gear weight is crucial.
- Outdoor shooting like landscapes, nature, or sports in bright daylight.
- Sony E-mount camera owners with effective in-body image stabilization (IBIS).
- Hobbyists seeking extended telephoto reach without a premium price tag.
Not Recommended For
- Professional wildlife or sports photography requiring fast apertures and advanced tracking in all conditions.
- Users of Sony E-mount cameras without in-body image stabilization.
- Low-light event photography or astrophotography where a wider aperture is essential.
- Videographers who need dedicated in-lens stabilization for smoother handheld footage.
Watch Out For
- No optical image stabilization means you're completely dependent on your camera's in-body stabilization, which isn't always enough at 300mm.
- The f/6.3 aperture at the long end means you'll be bumping up your ISO in anything but bright sunlight, leading to more noise in images.
- Lack of an AF/MF switch on the lens means you have to dig into camera menus to change focus modes.
- Some users might find the bokeh 'a bit mushy' compared to more expensive lenses.
Full Specifications
| ASIN | B08K3MXZCZ |
| Brand | Tamron |
| Lens Type | Telephoto |
| Item Weight | 1.2 pounds |
| Manufacturer | Tamron USA |
| Item model number | AFA047S700 |
| Product Dimensions | 5.8 x 3 x 3 inches |
| Compatible Mountings | Sony E |
| Camera Lens Description | 70-300mm |
| Focal Length Description | 70-300 millimeters, Standard 35 |
What Buyers Say
Users frequently highlight this lens's surprisingly light weight and compact size, making it a go-to for travel and outdoor shooting where bulk is a concern. While it delivers sharp images in ample light, the f/6.3 aperture at 300mm is a recurring point of discussion, often leading to higher ISO settings in dimmer environments. The absence of in-lens stabilization means its performance is heavily tied to your camera's IBIS capabilities, which some users find sufficient while others wish for more stability at longer focal lengths. It's often praised for its value, offering a long reach without the hefty price tag of comparable Sony lenses.
“Look, I needed a long lens for my A7III that wouldn't break my back or my bank, and this Tamron totally delivers for daylight hikes, but don't even think about using it indoors without cranking the ISO way up, it's just too slow.”
Common Praise
- The 1.2-pound weight makes it incredibly easy to carry for extended periods.
- Images are sharp and detailed, especially when shot in bright conditions.
- The RXD autofocus motor is fast and operates silently.
- Its compact size (5.8 inches long) makes it unobtrusive in a camera bag.
- Offers a 70-300mm focal range at a significantly lower price than Sony's equivalent.
Common Complaints
- The f/6.3 maximum aperture at 300mm severely limits its usability in low-light situations.
- Lack of optical image stabilization (OSS/VC) means handheld shots at 300mm can be challenging without strong IBIS.
- No physical switch for autofocus/manual focus, requiring menu diving.
- Some users find the bokeh quality 'mushy' compared to premium lenses.
Ownership Tips
- Balances surprisingly well on smaller Sony bodies despite its telephoto reach.
- The moisture-resistant construction holds up well against light rain or splashes during outdoor use.
- The autofocus remains consistent and accurate even when tracking moderately fast-moving subjects like birds in flight, provided there's enough light.
- You'll quickly learn to rely on your camera's IBIS, as any movement at 300mm without it is immediately noticeable.
- The lack of a lens hood in some packages is a minor annoyance, as flare can be an issue in direct sunlight.
Frequently Asked Questions
Does this lens have image stabilization?
No, this Tamron 70-300mm lens does not have built-in optical image stabilization. It relies on your Sony camera's in-body image stabilization (IBIS) for shake reduction.
Is this lens suitable for low-light photography?
Due to its maximum aperture of f/4.5 at 70mm and f/6.3 at 300mm, this lens is not ideal for low-light conditions. You'll likely need to use higher ISO settings, which can introduce noise.
Will this lens work on my APS-C Sony camera?
Yes, this lens is designed for full-frame E-mount cameras but will also work on APS-C Sony E-mount cameras. On an APS-C body, it will provide an equivalent focal length of approximately 105-450mm.
Does this lens have an autofocus/manual focus switch?
No, the Tamron 70-300mm F/4.5-6.3 Di III RXD does not feature a physical AF/MF switch on the lens barrel. You will need to change focus modes through your camera's menu system.
Is the autofocus fast enough for moving subjects?
The lens uses Tamron's RXD (Rapid eXtra-silent stepping Drive) motor, which provides fast and quiet autofocus, making it capable of tracking moving subjects in good lighting conditions.
Buying Guide
When you're looking at a telephoto zoom like this, you're essentially buying reach. The '70-300mm' tells you how much you can magnify distant subjects. The 'f/4.5-6.3' is your aperture, which dictates how much light the lens lets in and how blurry your background can get. A smaller number means more light and blur. Since this lens doesn't have its own stabilization, your camera's ability to stabilize images internally becomes super important, especially at the 300mm end.
Focal Length (70-300mm)
This range lets you zoom from a moderately tight shot (70mm) to a very close-up view of distant subjects (300mm). Think of it like a pair of binoculars that can adjust its magnification, allowing you to capture everything from a distant landscape detail to a bird in a tree.
Maximum Aperture (f/4.5-6.3)
This indicates how wide the lens can open to let in light. The 'f/4.5' is at 70mm, and it narrows to 'f/6.3' at 300mm. A wider aperture (smaller f-number) is like having bigger pupils; it lets in more light for brighter photos in dim conditions and creates a blurrier background, making your subject pop. This lens's aperture is relatively narrow, especially at 300mm, meaning it's best for well-lit scenes.
Weight (1.2 pounds)
The weight directly impacts how comfortable it is to carry and shoot with for long periods. A 1.2-pound lens is like carrying a small water bottle, making it easy to take on hikes or travel without feeling weighed down, unlike heavier telephoto lenses that can feel like carrying a brick.
Alternatives
If this lens doesn't quite fit, consider searching for telephoto zooms with a wider, constant maximum aperture (e.g., f/2.8 or f/4) for better low-light performance, or lenses with built-in optical image stabilization for cameras without strong IBIS or for video work.



