Product Description
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.
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
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 situationsVC (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.
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 switchMolded 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
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
fringingeBAND 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
Circular Aperture
Even when stopped down two steps, the nine-blade diaphragm maintains its
circular shape to deliver nicely-tuned background blurOptimal
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 cleanMoisture-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
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