Introduction

The Panasonic Lumix G 25mm F1.7 ASPH is a compact and light-weight prime lens for Micro 4 Thirds digicam our bodies. It provides an equal focal size of 50mm in full-frame phrases, and an equal most aperture of F3.4. This lens is a superb selection for general-purpose pictures, together with low-light work.

At $250 USD and accessible now, the Lumix G 25mm F1.7 is a stable possibility whether or not you are in search of a companion to your ‘package’ zoom lens otherwise you simply need one thing small and quick to shoot with.



Key specs:

  • Focal size: 25mm (50mm Full-Body equal)
  • Aperture vary: F1.7 – 22
  • Stabilization: None built-in
  • Filter thread: 46mm
  • Shut focus: 0.25 m (9.84″)
  • Most magnification: 0.14x
  • Diaphragm blades: seven
  • Hood: sure (plastic, included)
  • Weight: 125 g (0.28 lb)
  • Optical building: Eight parts in 7 teams
ISO 200 | 1/800 sec | F4 | Panasonic Lumix DC-G9

Ah, the nifty fifty. Again within the movie digicam days, lengthy earlier than the arrival of the zooming package lens, digicam corporations usually shipped their shopper and fanatic our bodies kitted with a 50mm lens; a apply I might be thrilled to see come again. In spite of everything, they are saying you turn out to be a greater photographer, sooner, ‘zooming’ together with your toes moderately than zooming together with your lens. Why? As a result of transferring round forces creativity and sometimes opens up new views!

Anyhow, the hallmark of any good nifty fifty, then and now, is a positive ratio of high quality to cost. And Panasonic’s fashionable take for Micro 4 Thirds suits the invoice properly: although it’s extremely inexpensive, it is able to producing beautiful photographs.

Comply with alongside as we soar into dealing with, AF conduct, and optical traits to seek out out if this lens can also be a good selection for you.

Pattern photographs on this assessment have been edited in Adobe Digicam Uncooked with changes restricted to white steadiness and publicity parameters. Sharpening and noise discount have been left at ACR defaults.

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Dealing with

At 125g (4.Four oz) in weight and simply 52mm (2 in) in size, this 25mm F1.7 is amongst Panasonic’s smallest and lightest prime lenses. The mount is metallic whereas the physique is constructed of plastic. Regardless of the delightfully light-weight design, it seems to be and feels well-built.

As one ought to anticipate on the worth level, this 25mm provides a bare-bones feature-set. There is no optical stabilization, although this should not matter for the overwhelming majority of shooters, as virtually all fashionable Micro 4 Thirds our bodies have inside IS. Neither is there an aperture ring or customized buttons. What the lens does provide is a large focus ring.

The entrance accepts 46mm filters and a plastic lens hood, H-H025, is included within the field. The hood attaches bayonet model, so it may be used with a filter. It will also be hooked up backward, to avoid wasting area.

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In comparison with…

Olympus additionally makes a ‘nifty fifty’ much like this one. It is a bit dearer, nevertheless it’s additionally a bit extra compact. Different choices on this section embody the sooner, although longer Sigma 30mm F1.Four and the higher-end Panasonic/Leica 25mm F1.Four II.

Here is how all of them stack up:

Panasonic Lumix G 25mm F1.7 Olympus M.Zuiko 25mm F1.8 Sigma 30mm F1.Four DC DN Panasonic Leica DG 25mm F1.Four II
Avenue worth $250 $290 $290 $700
Optical building Eight parts in 7 teams 9 parts in 7 teams 9 parts in 7 teams 9 parts in 7 teams
Aperture vary F1.7 – F22 F1.8 – F22 F1.4. – F16 F1.4 – F16
Focus motor Stepping motor Stepping motor Stepping motor Stepping motor
Climate sealed No No No Sure
Diaphragm blades 7 7 9 7
Filter thread 46mm 46mm 52mm 46mm
Minimal focus distance 0.25 m (9.84″) 0.24 m (9.45″) 0.30 m (11.81″) 0.30 m (11.81″)
Diameter / size 61mm / 52mm 56mm / 41mm 65mm / 73mm 63mm / 55mm
Weight 120 g 136 g 265 g 205 g

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Autofocus and focus respiratory

The Panasonic 25mm F1.7 is a lot quick to give attention to a Lumix physique; and taking pictures in AF-S tends to result in sooner AF acquisition than utilizing AF-C. The lens can also be snappy to focus with Olympus our bodies, although given how shut in worth the Olympus 25mm F1.Eight is to this lens, we might suggest sticking with the native possibility for greatest AF efficiency.

The minimal focus distance of 0.25m or simply shy of 10 inches is stable. Customers will be capable of get pretty up-close and private with their topics. And focusing is inside, that means the lens doesn’t improve in measurement because it racks.

For video shooters, focus respiratory – the place the framing shifts as the main focus is pulled – is pretty effectively managed. That is excellent news for people who could wish to manually rack focus for a cinematic impact. The guide focus motion is a focus-by-wire affair and responsive sufficient; the ring itself turns with no onerous cease at both finish of the main focus vary.

The lens can also be impressively quiet when utilizing AF in video mode because of its stepper motor. We examined it with a Panasonic G9 and located the touchscreen makes it painless to maneuver focus easily and silently, with simply the faucet of a finger.

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Picture high quality

Sharpness

ISO 200 | 1/4000 sec | F1.7 | Panasonic Lumix G9

This Panasonic 25mm F1.7 is pretty sharp throughout the focal aircraft, huge open. And even on the best decision 20MP 4 Thirds sensors, its resolving energy ought to go away most customers happy.

That being mentioned, stopping down only a bit to F2 or F2.8 will consequence within the sharpest output. However sharpness will drop fairly visibly by even F5.6 and definitely by F8, as a result of diffraction (remembering that F5.6 – F8 on 4 Thirds is F11 – F22 in full-frame phrases). So it is higher to crank your shutter velocity in vibrant gentle, moderately than transcend these apertures, if doable.

Vignetting and distortion

This lens shows minimal vignetting huge open. And any noticeable vignetting is passed by F2.8.

ISO 200 | 1/1250 sec | F2.8 | Panasonic Lumix G9

Whereas the lens has a good diploma of barrel distortion in its optical design (which is to be anticipated, because the M43 system prioritizes compact measurement), distortion is totally corrected for, digitally, within the digicam’s JPEGs and/or in your Uncooked converter. This implies straight traces will look, effectively, straight (see the pictures above the flowers for an instance). The lens additionally reveals minimal vignetting huge open and any traces of vignetting are passed by F2.8.

If the tiny little bit of vignetting does hassle you, it may simply be corrected for in submit. I personally take pleasure in it, although, as a matter of style. However to every their very own!

Bokeh

ISO 200 | 1/2000 sec | F1.7 | Panasonic Lumix G9

The bokeh – or high quality of the out-of-focus areas produced by this 25mm – is pretty pleasing. Panasonic takes pleasure within the smoothness/sprucing of its aspherical surfaces/molds, and it reveals right here. The discs rendered by out-of-focus highlights are comparatively Gaussian and freed from distracting patterns like ‘onion rings’. Solely sometimes do they present the slightest trace of a tough edge (extra noticeable as you cease down), however not sufficient to trigger any concern.

At F1.7, bokeh close to the sting of the body shows a ‘cat eye’ impact. At F4, bokeh seems to be way more uniform, by way of its form.

Nonetheless, when taking pictures huge open, bokeh close to the sting of the body seems to be lopsided, displaying the traditional ‘cat eye’ impact. Whereas this may result in a barely much less shallow DOF impact at edges, it is completely acceptable for a lens of this kind, and wasn’t extreme sufficient to yield swirly bokeh in our pictures. Extra importantly, the discs close to the corners aren’t truncated in an odd or distracting method.

The ‘cats-eye’ bokeh is generally passed by F4. Nonetheless, bokeh discs turns into much less rounded. Particularly, the polygonal form of the lens’s 7-blade aperture turns into extra pronounced within the out-of-focus highlights, if you cease down previous F2.8, and this may have a barely adverse impression on bokeh on the whole.

The Panasonic 25mm F1.7 is able to producing photographs with good topic separation from the background.

ISO 200 | 1/3200 sec | F2.2 | Panasonic Lumix G9

Flaring, ghosting, and sunstars

Lens flare could cause some lack of distinction particularly when taking pictures immediately into vibrant gentle sources, whereas a number of ghosts of vibrant sources can manifest themselves as coloured ‘blobs’ that get extra outlined the extra you cease the lens down.

ISO 200 | 1/800 sec | F16 | Panasonic Lumix G9

Even when taking pictures with the included lens hood hooked up, artifacts from lens flare could be fairly distracting with this lens. You could discover ghosting when taking pictures immediately into the solar, normally manifesting as a multiple-color haze or purple blobs.

When taking pictures vibrant gentle sources at stopped-down apertures – like within the F16 shot above – the ‘spikes’ of the sunstar are soft-edged and never all that effectively pronounced.

Lateral and longitudinal chromatic aberration (fringing)

The out-of-focus areas on this F1.7 shot present some purple fringing in entrance of the topic, aka longitudinal CA (LoCA)

ISO 200 | 1/3200 sec | F1.7 | Panasonic Lumix G9

Lateral chromatic aberration – or purple/inexperienced fringing close to the sting of the body in excessive distinction areas – could be very effectively managed for optically, and is additional corrected for digitally in JPEGs and/or in your Uncooked converter. Listed below are uncorrected and corrected Uncooked conversions – as you may see the variations are minor.

Longitudinal CA (LoCA) – or purple and inexperienced fringing manifesting in entrance of and behind the aircraft of focus – could be pretty noticeable huge open and is difficult to manually appropriate for. That mentioned, stopping down the lens only a bit helps to mitigate it, and though it does not completely disappear even by F2.8, it isn’t too distracting both.

Whereas the Panasonic 25mm F1.7 reveals some longitudinal CA huge open, it turns into a lot much less noticeable if you cease down a bit. Nonetheless, at 100%, you may definitely spot some purple and inexperienced fringing within the out-of-focus areas on the left facet of this picture, within the vines and stems.

ISO 200 | 1/2000 sec | F2.8 | Pansonic Lumix G9

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Conclusion

What we like What we do not like
  • Fairly sharp huge open and even sharper stopped right down to F2
  • Quick and quiet to focus
  • Minimal distortion
  • Compact, lightweight design
  • Very inexpensive
  • Included lens hood
  • Steel lens mount
  • Sunstars might be extra pronounced
  • A number of seen ghosting artifacts in scenes with a vibrant gentle supply within the body
  • Longitudinal CA could be distracting huge open
  • No weather-sealing

The Pansonic Lumix G 25mm F1.7 ASPH is an inexpensive and succesful possibility for 4-Thirds shooters in search of one thing extra versatile than the package lens, particularly for low-light pictures. It is well-built, compact, and quick/quiet to focus, making it a good selection for stills and video shooters alike.

In fact, for a bit more cash, you will get Sigma’s barely sooner 30mm F1.Four DC DN lens, which can also be a sturdy optical performer. However the trade-off is a tighter crop (60mm in Full-frame phrases) and a lens building that is fairly a bit longer and about twice as heavy because the Panasonic.

ISO 200 | 1/800 sec | F5.6 | Panasonic Lumix G9

For people needing the best possible 50mm equiv. output for Panasonic Micro 4 Thirds cameras, the Panasonic Leica DG 25mm F1.Four II is the ticket. Nonetheless, at almost thrice the price of the Panasonic 25mm F1.7, it isn’t the best lens to justify. It is even more durable to justify given how solidly this extra inexpensive prime performs.

In the end, although it isn’t optically good, for most folk, the Panasonic Lumix G 25mm F1.7 ASPH goes to be greater than adequate.

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Pattern gallery

Please don’t reproduce any of those photographs with out prior permission (see our copyright web page).

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Scoring

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