Subject overview: Panasonic Lumix G 25mm F1.7 ASPH



The Panasonic Lumix G 25mm F1.7 ASPH is a compact and light-weight prime lens for Micro 4 Thirds digital camera 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 images, together with low-light work.

At $250 USD and obtainable 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: 8 components in 7 teams
ISO 200 | 1/800 sec | F4 | Panasonic Lumix DC-G9

Ah, the nifty fifty. Again within the movie digital camera days, lengthy earlier than the arrival of the zooming package lens, digital camera corporations usually shipped their shopper and fanatic our bodies kitted with a 50mm lens; a apply I would be thrilled to see come again. In any case, they are saying you grow to be a greater photographer, quicker, ‘zooming’ together with your ft moderately than zooming together with your lens. Why? As a result of transferring round forces creativity and infrequently 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 is very inexpensive, it is able to producing beautiful photos.

Comply with alongside as we bounce into dealing with, AF habits, and optical traits to search out out if this lens can be a good selection for you.

Pattern photos on this overview had been edited in Adobe Digital camera Uncooked with changes restricted to white stability and publicity parameters. Sharpening and noise discount had been left at ACR defaults.

Again to high

Dealing with

At 125g (4.4 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 steel 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 isn’t any optical stabilization, although this should not matter for the overwhelming majority of shooters, as virtually all fashionable Micro 4 Thirds our bodies have inner IS. Neither is there an aperture ring or customized buttons. What the lens does supply 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 fashion, so it may be used with a filter. It may also be hooked up backward, to save lots of area.

Again to high

In comparison with…

Olympus additionally makes a ‘nifty fifty’ just like this one. It is somewhat dearer, nevertheless it’s additionally a bit extra compact. Different choices on this phase embrace the quicker, although longer Sigma 30mm F1.4 and the higher-end Panasonic/Leica 25mm F1.4 II.

This is how all of them stack up:

Panasonic Lumix G 25mm F1.7Olympus M.Zuiko 25mm F1.8Sigma 30mm F1.4 DC DNPanasonic Leica DG 25mm F1.4 II
Road worth$250$290$290$700
Optical building8 components in 7 teams9 components in 7 teams9 components in 7 teams9 components in 7 teams
Aperture varyF1.7 – F22F1.8 – F22F1.4. – F16F1.4 – F16
Focus motorStepping motorStepping motorStepping motorStepping motor
Climate sealedNoNoNoSure
Diaphragm blades7797
Filter thread46mm46mm52mm46mm
Minimal focus distance0.25 m (9.84″)0.24 m (9.45″)0.30 m (11.81″)0.30 m (11.81″)
Diameter / size61mm / 52mm56mm / 41mm65mm / 73mm63mm / 55mm
Weight120 g136 g265 g205 g

Again to high

Autofocus and focus respiration

The Panasonic 25mm F1.7 is lots quick to deal with a Lumix physique; and taking pictures in AF-S tends to result in quicker AF acquisition than utilizing AF-C. The lens can be snappy to focus with Olympus our bodies, although given how shut in worth the Olympus 25mm F1.8 is to this lens, we would advocate 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 to get pretty up-close and private with their topics. And focusing is inner, that means the lens doesn’t enhance in dimension because it racks.

For video shooters, focus respiration – the place the framing shifts as the main focus is pulled – is pretty properly managed. That is excellent news for people who might need 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 exhausting cease at both finish of the main focus vary.

The lens can 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.

Again to high

Picture high quality


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

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

That being mentioned, stopping down only a bit to F2 or F2.8 will outcome within the sharpest output. However sharpness will drop fairly visibly by even F5.6 and definitely by F8, on account 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 pace in shiny mild, moderately than transcend these apertures, if potential.

Vignetting and distortion

This lens shows minimal vignetting large 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 dimension), distortion is absolutely corrected for, digitally, within the digital camera’s JPEGs and/or in your Uncooked converter. This implies straight traces will look, properly, straight (see the photographs above the flowers for an instance). The lens additionally exhibits minimal vignetting large open and any traces of vignetting are passed by F2.8.

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


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 exhibits right here. The discs rendered by out-of-focus highlights are comparatively Gaussian and freed from distracting patterns like ‘onion rings’. Solely often 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 large open, bokeh close to the sting of the body seems to be lopsided, displaying the basic ‘cat eye’ impact. Whereas this will result in a barely much less shallow DOF impact at edges, it is completely acceptable for a lens of this sort, and wasn’t extreme sufficient to yield swirly bokeh in our photographs. Extra importantly, the discs close to the corners aren’t truncated in an odd or distracting method.

The ‘cats-eye’ bokeh is usually 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, once you cease down previous F2.8, and this will have a barely detrimental affect on bokeh normally.

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

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

Flaring, ghosting, and sunstars

Lens flare may cause some lack of distinction particularly when taking pictures straight into shiny mild sources, whereas a number of ghosts of shiny 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 might be fairly distracting with this lens. You might discover ghosting when taking pictures straight into the solar, normally manifesting as a multiple-color haze or purple blobs.

When taking pictures shiny mild sources at stopped-down apertures – like within the F16 shot above – the ‘spikes’ of the sunstar are soft-edged and never all that properly 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 properly managed for optically, and is additional corrected for digitally in JPEGs and/or in your Uncooked converter. Listed here 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 airplane of focus – might be pretty noticeable large open and is tough to manually right for. That mentioned, stopping down the lens only a bit helps to mitigate it, and though it does not totally disappear even by F2.8, it isn’t too distracting both.

Whereas the Panasonic 25mm F1.7 exhibits some longitudinal CA large open, it turns into a lot much less noticeable once you cease down a bit. Nonetheless, at 100%, you may actually 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

Again to high


What we likeWhat we do not like
  • Moderately sharp large open and even sharper stopped right down to F2
  • Quick and quiet to focus
  • Minimal distortion
  • Compact, lightweight design
  • Very inexpensive
  • Included lens hood
  • Metallic lens mount
  • Sunstars could possibly be extra pronounced
  • Plenty of seen ghosting artifacts in scenes with a shiny mild supply within the body
  • Longitudinal CA might be distracting large open
  • No weather-sealing

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

After all, for somewhat more cash, you will get Sigma’s barely quicker 30mm F1.4 DC DN lens, which can be a robust 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 F1.4 II is the ticket. Nonetheless, at almost 3 times the price of the Panasonic 25mm F1.7, it isn’t the best lens to justify. It is even tougher to justify given how solidly this extra inexpensive prime performs.

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

Again to high

Pattern gallery

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

Again to high


Again to high


Please enter your comment!
Please enter your name here