Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional Overview

Introduction

Ease of Use

The Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional is a weather-sealed wide-angle zoom lens with a devoted Micro 4 Thirds mount that’s made from steel, with a rubber seal across the mount. Communication between lens and digicam physique is supplied by eleven electrical contacts.

Word nevertheless that with the intention to take full benefit of the weatherproofing, you have to to mount it on a equally weather-sealed physique, like the brand new flagship OM System OM-1 digicam that we examined it with.

Tipping the scales at 411g and measuring 88.5mm in size and 77mm in diameter, the Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional is a compact and light-weight ultra-wide-angle to plain zoom lens.

When it is unlocked and zoomed out to 8mm, although, it does achieve one other 3cm in size. It is truly a little bit shorter in size when set to 25mm than at 8mm.

The OM System OM-1 used for this take a look at is an excellent match for the lens, providing good stability, quick auto focus, and full environmental seals.

The M.Zuiko Digital ED 8-25mm F4.0 Professional lens may be very properly constructed, totally residing as much as the PRO designation that Olympus have given it.

When it comes to options, the M.Zuiko Digital ED 8-25mm F4.0 Professional supplies a lot of the identical controls supplied by a few of the larger, sooner Olympus Professional lenses.

As with all Olympus M.Zuiko lenses, the 8-25mm F4.0 Professional doesn’t provide picture stabilisation. As an alternative that is supplied by the digicam physique, on this occasion the frankly superb 5-axis system within the OM-1, which supplies 7 stops of compensation when paired with this lens.

So whereas the shortage of in-lens picture stabilisation is a non-issue for Olympus digicam customers, house owners of different producers merchandise who do not provide in-camera picture stabilisation in a few of their cameras, like Panasonic, could wish to contemplate a special lens.

With the 8-25mm lens connected to an OM-1 physique, focusing proved to be very fast in most conditions. This mix is able to locking concentrate on a topic virtually immediately, even when alternating between shut and faraway topics.

In excessive low-light conditions it’s possible you’ll expertise a little bit focus looking on the lengthy finish, the place a lens with a sooner f/2.8 fixed aperture would assist keep away from this.

Guide focusing is completed in a standard vogue, with the adequately sized focus ring mechanically coupled to the transferring lens parts, though there aren’t any arduous stops at both finish. Focusing is totally inside and the filter thread doesn’t rotate on focus.

There’s a reasonably sized focusing ring across the lens, which you should utilize when manually focusing the lens. You may snap again the focusing ring to alter from auto focus to guide focus in a particularly fast movement, snapping it again once more if you wish to change again to utilizing autofocus. When within the guide focus place, you may see a number of focal distances are displayed in each meters and ft.

Slightly below the zoom ring on the base of the lens is a operate button, marked L-Fn, which could be customised by way of the digicam’s essential menu to regulate a variety of totally different actions. One helpful operate is depth of discipline preview – this lets you see how your picture will have a look at the chosen if you happen to maintain down the L-Fn button, and is especially helpful when working with slim apertures.

The Olympus M.ZUIKO Digital ED 12-45mm f/3.5-6.3 EZ lens contains a 72mm filter thread and a entrance bayonet for attaching the equipped LH‑76E petal-shaped lens hood, which twists into place to lock and launch it from the lens. The filter thread doesn’t rotate on focus, which is nice information for anybody intending to make use of a polariser or ND grads.

Focal Vary

The 8mm focal size supplies an angle of view of 107 levels.

8mm

The 25mm focal size supplies an angle of view of 47 levels.

25mm

Chromatic Aberrations

Chromatic aberrations, sometimes seen as purple or blue fringes alongside contrasty edges, aren’t an excessive amount of of an issue with the Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional lens, besides in areas of very excessive distinction.

8mm

25mm

Vignetting

With the lens set to its most aperture of f/4, there’s some gentle fall-off within the corners, requiring you to cease down by at the least 2 f-stops to fully forestall it.

8mm

25mm

Distortion

The Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional does not exhibit an excessive amount of barrel or pincushion distortion, as you’ll be able to see within the images beneath.

8mm

25mm

Sunstars and Flare

The Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional is able to producing good sunstars when stopped-down to f/22, as proven beneath, though the lens is inclined to flare when taking pictures immediately into the solar, even with the equipped lens hood fitted.

8mm

25mm

Macro

The Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional isn’t actually a macro lens, but it surely does provide a usefully shut focus level of 23cm / 9.05in throughout the complete zoom vary from the sensor aircraft and a most magnification of 0.21x.

Bokeh

Bokeh is a phrase used for the out-of-focus areas of {a photograph}, and is normally described in qualitative phrases, resembling easy / creamy / harsh and so on.

Olympus have paid shut consideration to this side of lens use, using a 7-segment diaphragm with rounded blades for pretty pleasing bokeh.

In our view, their efforts have been fairly profitable for an ultra-wide to plain zoom lens – see the examples beneath to evaluate for your self.

Sharpness

With a purpose to present you the way sharp the Olympus M.Zuiko Digital ED 8-25mm F4.0 Professional lens is, we’re offering 100% crops on the next pages.