Notice about 28-75mm F/2.8 Di III RXD (Model A036) Operation
Dear Tamron product users and potential purchasers.
Thank you for your interest in Tamron products.
We would like to announce that we discovered some issues with the auto focus of our new lens, model A036FS; 28-75mm F/2.8 Di III RXD for SONY mirrorless cameras, released on May 24, 2018. The issues occur primarily when using the camera in video recording mode.
Rest assured, we are evaluating the cause of the error and for the solution to this matter. We expect this issue to be resolved very shortly and we will release a firmware update at that time.
Regarding the firmware updating process, please be assured that the process is accomplished directly through the SONY camera and supported by the Sony firmware updating function. As soon as the process is finalized, we will explain the process in detail on our website.
We sincerely apologize to all users and potential purchasers for any inconvenience this issue may cause.
Notice about the supply of the 28-75mm F/2.8 Di III RXD (Model A036) for Sony FE mount
We appreciate your continuous support of Tamron products. Regarding our new product, the 28-75mm F/2.8 Di III RXD (Model A036) scheduled to be released on Thursday, May 24, 2018, we are receiving orders for immensely greater quantities than we could have anticipated. Therefore, we regret to inform our customers that the quantities prepared for the launch date will not nearly fill the current demand, and that we will not be able to produce the necessary quantity of products to satisfy all customer requests immediately. Please trust that we are taking every possible action to meet this elevated demand as quickly as possible. Please accept our sincerest apologies for any inconvenience that this may cause you. We would like to thank you in advance for your patience, understanding, and most of all, your patronage.
Express your vision in intimate detail
An F/2.8 high-speed zoom made for full-frame mirrorless
Packing cutting-edge technology into a compact body, Tamron has created a high-speed zoom lens specifically designed for mirrorless cameras: the 28–75mm F/2.8 Di III RXD (Model A036). A great addition to the Sony E-mount, the A036 strikes a beautiful balance between vibrant image quality, superb bokeh, compact size and lighter weight.
Specialized glass elements throughout control various aberrations and produce stable resolution across the entire zoom range. All the lens surface is treated with Tamron’s proprietary BBAR (Broad-Band Anti-Reflection) Coating, which dramatically reduces ghosting and flaring while preserving crisp image quality. The A036 also incorporates an all-new high-speed precision AF drive system with an RXD (Rapid eXtra-silent stepping Drive) motor unit that is remarkably quiet.
In addition to portraits, nature shots and street photography, the 0.19m Minimum Object Distance (MOD) lets you enjoy new forms of photographic expression with close-up shooting at the wide-angle end. With Moisture-Resistant Construction and Fluorine Coating, this lens offers exceptional mobility and outdoor functionality. It is the only zoom you need to portray the world in all its full-frame beauty.
The A036 zoom delivers a dazzling balance of clear yet soft rendering, stunning bokeh and exceptional resolution for in-focus areas. It also captures the finer details across the entire focus plane with performance that supports the latest high-resolution cameras—all while expressing the characteristic smoothness of a fast aperture lens.
Stunning bokeh spreads gently from the plane of focus to highlight your subject. By stopping down the aperture, you can alter how images are rendered. The lens also incorporates a nine-bladed aperture that produces beautifully round defocused light points. And Tamron’s distinctive image characteristics, which produce more than just a different degree of blur with F-stop changes, add even more impact.
The A036 zoom is designed to maximize the potential of full-frame mirrorless cameras. Because it is designed to be your most frequently used high-speed zoom, we made it compact. Now you can enjoy advanced optical performance in a compact size with lightweight convenience. Weighing just 550g (19.4 oz) with a length of 117.8mm (4.6 in), the A036 lets you take advantage of the mobility offered by mirrorless cameras for everything from everyday snaps and commemorative photos to specialized photography.
The Model A036 breaks all the rules regarding MOD. No longer must the MOD of a zoom lens be fixed throughout the focal range. The A036 reaches a MOD of 0.19m (7.5 in) at the 28mm wide-angle end achieving a maximum magnification ratio of 1:2.9. A working distance of just 5.7cm (2.24 in) from the front element allows you to shoot close-up with a sense of perspective unique to wide angles. At the 75mm telephoto end, the 0.39m (15.3 in) MOD provides an image magnification of 1:4, allowing close-up shooting with a pleasantly blurred background similar to a macro lens.
The AF drive on the A036 includes an RXD (Rapid eXtra-silent stepping Drive) motor unit to help you stay focused on the action. RXD uses an actuator to precisely control the rotational angle of the motor, allowing it to directly drive the focusing lens without passing through a reduction gear. A sensor that accurately detects the position of the lens enables high-speed and precise AF, which is ideal when shooting continually moving subjects or video. With a focusing system that is both smooth and quiet, the A036 lets you shoot a video without worrying about picking up ambient drive sounds.
Tamron’s new 28-75mm zoom is compatible with many of the advanced features that are specific to mirrorless cameras. This includes:
- Fast Hybrid AF
- Eye AF
- Direct Manual Focus (DMF)
- In-camera lens correction (shading, chromatic aberration, distortion)
- Camera-based lens unit firmware updates
* Features vary by camera. Please consult your camera’s instruction manual for details.
*As of March, 2018
The A036 zoom features our new “Human Touch” design, a mixture of form and function embodied by the “Luminous Gold” brand ring above the lens mount. It tells you that no detail has been overlooked in creating a design and feel that’s easy to work with—everything you look for in a photography partner. And everything you expect from Tamron.
|Angle of View (diagonal)||
75°23'-32°11'(for full-frame format)
52°58'-21°05'(for APS-C format)
|Optical Construction||15 elements in 12 groups|
|Minimum Object Distance||0.19m (7.5 in) (WIDE) /
0.39m (15.3 in) (TELE)
|Maximum. Magnification Ratio||1:2.9 (WIDE) / 1:4 (TELE)|
|Length*||117.8mm (4.6 in)|
|Weight||550g (19.4 oz)|
|Diaphragm Blade Number||9 (circular diaphragm)**|
|Standard Accessories||Lens hood, Lens caps|
|Compatible Mounts||Sony E-mount|
* Length is the distance from the front tip of the lens to the lens mount face.
** The circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture.
Specifications, appearance, functionality, etc. are subject to change without prior notice.
This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.
May 24th, 2018
Optical Construction (15 elements in 12 groups)
MTF (Modulation Transfer Function) curves describe to what extent the tested lens can faithfully reproduce contrast of the subject in images it captures.
The closer the 10 lp/mm (line pairs per millimeter) curve (the thick line for low frequency) in an MTF chart to "1" of the vertical axis (the higher up), the higher the contrast reproduction performance of the tested lens will be. The closer the 30 lp/mm curve (the thin line for high frequency) to "1" (the higher up), the higher the resolving power and thus the subjective sharpness of the lens will be.
Lens performance differs depending upon directions. Solid lines show performance in the sagittal (radial) direction while dotted lines indicate performance in the meridional (circumferential) direction. When sharp lenses capable of delivering uniform optical performance over the entire image field are tested, MTF charts show curves plotted in good balance.
Performance characteristics of photographic lenses cannot be expressed with only MTF charts. There are other factors that are expressed in different methods, such as taste of softness and degrees of compensation of various aberrations. But you can use MTF charts as a scale to measure lens performance.