Olympus Zuiko Lenses 소개
Zuiko wideangle lens - 28mm f/2.0, 28mm f/2.8

Among all wide-angle lenses for a day-to-day usage - 28mm wide-angle can be the most practical and truly an all rounder lens. It should be also a better lens for "PR" (public relation) type of photography espeically when you often used flash. As compaed with 35mm focal length, It provides a better rendition of perspective, but has less tendency to exaggerate as compared to a 24mm or 20mm lens.

If you are undecided about which wide-angle is best for your type of photography, it might be a good idea to take a look through a viewfinder with a 28mm lens. The image you'll see will have more pronounced perspective than a 35mm lens but not to a great extent. The main advantage of the 28mm lens is its ability to capture a fairly large subject area without creating undue concern over its perspective rendition. I have always thought a 28mm is far more logical than investing into a 35mm to handle all round photographic situations. A comparison of 24mm, 28mm and 35mm angles of view should give you an idea of how a 28mm performs.

Angle of View - 24mm, 28mm, 35mm

Lens

Diagonal

Vertical

Horizontal

24mm

84°

53°

74°

28mm

75°

46°

65°

35mm

63°

38°

54°


* More .....

With group portraits, a lens like Zuiko 28mm when used with care can mean a truly pleasing picture. You can move in close enough for facial detail and at the same time have sufficient pictorial coverage. And, giving some consideration to the subject's surroundings, the use of depth of field to control the zone of sharpness at the sides and behind the main subject. Those who has faced similar experience during a round table dinner function will appreciate more of its slightly broader coverage. Perhaps the only thing that you may want to take note of is sometimes the people or objects at the extreme two edges of the picture frame may be slightly distorted if the working distance is too close.

Another more important factor is being the 28mm coverage usually will fit most popular electronic flash units regardless of whether you are using the dedicated Olympus T32 or a third party flash unit. The combination of a flash with good coverage and a 28mm lens can be extremely valuable, providing good exposure and sufficient coverage.




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Zuiko 28mm F2.0

A fast speed lens that gives an extra wide angle for composition even in restricted spaces, yet handles with the docility of a standard lens.

* Not to dampen your high spirit, but mainly for comparison purposes, the Zuiko 28mm f2.0 is not the lightest in this class, the SMC Pentax 28mm f2.0 weighs only 215g (7.5oz).

The construction of this lens is a brilliant new retrofocus type that cuts distortion and curvilinear aberrations, while affording exceptional compactness. For quite a while, the lens speed of f/2.0 was among the fastest in this class until the Nikon and Canon (Sigma) broke this lens speed barrier with a respective f/1.4 and f1.8 lens. However, even for a comparing Nikkor f/2.0 which weighs 360 grams to a Zuiko f2.0's 245g !

The appealing point for this Zuiko lens is, it is blending good lens speed and a compact design (It still shares 49mm accessories such as filter etc.). To contain general abberrations common to lenses of this high speed such as distortion, astigmatism and coma, high refraction glass are used for improved optical performance. The use of floating element system also helped to extend its high optical performance at its closest focusing distance of 30cm.

Strangely, although the older and newer version both share virtually same optical construction of 9 lens elements arranged in 8 groups and incorporated with close range optical correction system, the newer version lens is lighter than the older I-Zuiko AUTO-W 28mm f2.0.

Specification:

Older Version: I- Zuiko AUTO-W 28mm f2.0
Current Version:
Zuiko 28mm f2.0
Focal length: 28mm
Lens construction: 8 groups, 9 elements
Angle of view: Diagonal: 75°
Diatance Scale: (m) 0.3 (1 ft) to infinity (
OO)
Focusing: Helicoid
Minimum and Maximum aperture: f/2.0-f/16
Diaphragm: Automatic
Filter Size. 49mm
Length: 43mm
Weight: 245g (8.6oz); older version: 250g (8.8oz)

Recommended Focusing Screens: 1:1*, 1:2**, 1:3*, 1:4n*, 1:5#, 1:10*, 1:13*, 1:14*
* Compatible. Focusing and exposure accuracy remains. ** Compatible, Focusing and exposure accuracy remains intact but micropsrim, corners of the screen and split image may darken. # Can be used, they provide accurate focusing but exposure error may occur in manual mode for OM1 and OM2 series models.

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N O T E: As no photographer in the world would possess ALL the lenses within a single trade name. You are always encouraged to replace these reserved slot for sample images above shooting with a lens type detailed above - just mail in your creative visual, a little caption relative to the background information will help a lot to let other understand how you prepared the shot. Please mention IF you require a complimentary link and where should it be pointed at. Naturally, I DO NOT like to disappoint anyone, but in order to maintain my self-set standard in the PIM website - I would prefer to have high quality input rather than in quantity, if your image is NOT selected for broadcasting in this site, give it a try the next time but I do promise every image will be view and consider carefully. I do appreciate your consideration in this matter.

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Zuiko 28mm F2.8

Easily the more popular version between two 28mm lenses. Extremely compact, its overall length of 32mm and light weight of 170 grams made it the one of the lightest Zuiko lenses. With a reasonable price and sufficient speed.

It is one of the first and most practical choices for a wide-angle lens. This is also a good subsitute to the discontinued G-Zuiko AUTO-W 28mm f/3.5 version which in fact is heavier than the newer f2.8 version.

Composed of 6 air-spaced elements, the 28mm f/2.8 provides high contrast and high resolving power. This is the only 28mm Zuiko lens that can stopped down to f/22 instread of f/16. Combined with the uncharacteristic nature of the compact SLR design, this lens when combined with tany OM body is particularly convenient for traveling and all round photographic applications.

Specification:

Current Version: Zuiko 28mm f2.8
Focal length: 28mm
Lens construction: 6 groups, 6 elements
Angle of view: Diagonal: 75°
Diatance Scale: (m) 0.3 (1ft) to infinity (
OO)
Focusing: Helicoid
Minimum and Maximum Aperture: f/2.8-f/22
Diaphragm: Automatic
Filter Size. 49mm
Length: 32mm
Weight: 170g (6.0oz)

Recommended Focusing Screens: 1:1*, 1:2**, 1:3*, 1:4n*, 1:5#, 1:10*, 1:13*, 1:14*
* Compatible. Focusing and exposure accuracy remains. ** Compatible, Focusing and exposure accuracy remains intact but micropsrim, corners of the screen and split image may darken. # Can be used, they provide accurate focusing but exposure error may occur in manual mode for OM1 and OM2 series models.

Brief info on G-Zuiko AUTO-W 28mm F3.5

IT has a differing optical construction with the current 6 elements in 6 groups f/2.8 Zuiko lens. The G-Zuiko AUTO-W 28mm f/3.5 has a 7 elements arranged in 7 groups and thus, it weighs 180g whcih is heavier than the current f/2.8 counterpart which replaced it. It can close focus to 0.3m, as with other 28mm Zuiko lenses and its length is marginally shorter at 31mm.

Specification:

Lens: G-Zuiko AUTO-W 28mm f/3.5
Focal length: 28mm
Lens construction: 7 groups, 7 elements
Angle of view: Diagonal: 75°
Diatance Scale: (m) 0.3 (1ft) to infinity (
OO)
Focusing: Helicoid
Minimum and Maximum aperture: f/3.5-f/16
Diaphragm: Automatic
Filter Size. 49mm
Length: 31mm
Weight: 180g (6.3oz)

Recommended Focusing Screens: 1:1*, 1:2**, 1:3*, 1:4n*, 1:10*, 1:13*, 1:14*
* Compatible. Focusing and exposure accuracy remains. ** Compatible, Focusing and exposure accuracy remains intact but micropsrim, corners of the screen and split image may darken.

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