The 45mm format is the closest approximation to human field of vision and captures high-resolution shots to an unparalleled degree of resolving power. Furthermore, the integration of VC into a 45mm fast standard prime lens for full-frame DSLR cameras is an industry-first*. 

Compose an image at will, without regard to shooting distance or ambient lighting constraints – to produce crisp, tack sharp images from F/1.8 full open aperture. The unique synthesis of a VC system in a 45mm lens with a best-in-class MOD of 0.29m** redefines standard distance shooting – freeing the photographer to discover another dimension of personal style.

Lens Technology

• F/1.8
• Focusing Distance
• Vibration Compensation (VC)
• Ultrasonic Silent Drive (USD)
• Molded Glass Aspherical Elements
• LD Glass
• eBAND and BBAR Coating
• Circular Aperture
• Optimal Relative Illumination
• Fluorine Coating and Moisture-Resistant Construction

Focal length: 45mm Exposure: F/1.8 1/400sec

High Performance at F/1.8 Full Aperture

The open aperture is set to F/1.8 with optimized critical properties at a higher level: superb optical performance coupled with a VC system, a shorter MOD, and a well-balanced form factor. Rigorous simulation processes performed throughout the design phase are materialized in distinguished resolving power and beautifully-tuned background blur, a prominent feature to a fast-aperture, full-frame compliant optic.

Focal length: 45mm Exposure: F/1.8 1/320sec

Focal length: 45mm Exposure: F/1.8 1/320sec

Closest Focusing Distance in its Class

The SP 45mm (MOD: 0.29m) offers best-in-class close focusing*. A floating system design feature seamlessly optimizes image quality by shifting elements relative to the focus group in close shooting situations.

* 45mm: Rated top among current 45mm and 50mm fixed focal length interchangeable AF lenses for full-frame DSLR cameras excluding macro lenses (As of July 2015. Source: Tamron).

Focal length: 45mm Exposure: F/3.2 1/40sec

VC (Vibration Compensation) Integration, Setting Itself Apart

VC deployed on fast-aperture lenses dramatically enhances freedom of hand-held shooting under lime light or dim room light conditions by eliminating minute camera shake. In particular, cameras with high-pixel density imagers tend to pick up subtle vibrations, resulting in degradation of image quality. VC is an excellent attribute to acquire inherent high-fidelity images. 45mm is the very first lens that employs the VC functionality among the fast standard fixed focal lenses in full-frame format.*

* As of July 2015. Source: Tamron.

VC module

Focal length: 45mm Exposure: F/4 1/320sec

Ultrasonic Silent Drive (USD)

The USD actuator converts ultrasonic waves into rotational motion that delivers autofocus with responsiveness, accuracy, and speed without so much as a whisper. The photographer can easily use manual focus at any point while the AF system is operating without having to fumble for a switch.

Ring-type ultrasonic motor USD

Focal length: 45mm Exposure: F/1.8 1/60sec

Molded Glass Aspherical Elements

Two molded glass aspherical elements deliver planarity in field curvature. These elements ensure superb focusing uniformity over the entire field by compensating for spherical and comatic aberrations.

Focal length: 45mm Exposure: F/1.8 1/500sec

LD (Low Dispersion) Glass

To further compensate for chromatic aberrations, the new SP Series lenses use an LD element. This element helps to deliver crisp, clear images without color fringing.

eBAND and BBAR Coating

eBAND (Extended Bandwidth and Angular-Dependency) Coating and BBAR (Broad-Band Anti-Reflection) Coating both provide superior anti-reflection properties. These technologies have been adapted to each lens and provide crystal clear images by suppressing element surface reflections that lead to ghosting and flare.

eBAND Coating is a nano-structured layer deployed on the critical element surface. In addition to regular anti-reflection coatings, eBAND Coating offers higher transmissivity and a significant improvement in anti-reflection characteristics against angulated incident rays.

Focal length: 45mm Exposure: F/2.8 1/500sec

Circular Aperture

Even when stopped down two steps, the nine-blade diaphragm maintains its circular shape to deliver nicely-tuned background blur.

Focal length: 45mm Exposure: F/2.8 1/2500sec

Optimal Relative Illumination

The 45mm lens delivers exceptionally uniform illumination levels across the image field to avoid non-linear pattern or fall-off toward corners.

Fluorine Coating

Developed for industrial optics, fluorine coating offers long-lasting oil and water resistance to the lens. Moisture and smudges wipe away, making it easy to keep your lens clean.

Image illustrates resistance to grime (oil-based felt marker)
left side: Without fluorine coating
right side: With fluorine coating

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Moisture-Resistant Construction

Constructed to prevent moisture from entering the internal mechanisms of the lens, the new SP line is sealed to allow photographers to shoot outdoors in adverse conditions.

Technical Information

Specifications

Model	F013
Focal Length	45mm
Maximum Aperture	F/1.8
Angle of View (diagonal)	51°21’ for full-frame format 34°28’ for APS-C format
Optical Construction	10 elements in 8 groups
Minimum Object Distance	0.29m (11.4 in)
Maximum Magnification Ratio	1:3.4
Filter Size	Φ67mm
Maximum Diameter	Φ80.4mm
Length*	91.7mm (3.6 in) Canon 89.2mm (3.5 in) Nikon
Weight	540g (19 oz) Canon 520g (18.3 oz) Nikon
Aperture Blades	9 (circular diaphragm**)
Minimum Aperture	F/16
Standard Accessories	Flower-shaped lens hood, Lens caps
Compatible Mounts	Canon, Nikon, Sony***

Specifications, appearance, functionality, etc. are subject to change without prior notice.

* 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.
*** Sony mount model without VC.

MTF Chart

MTF Chart Guide

Optical Construction