H-X1025E, LEICA DG VARIO-SUMMILUX 10-25mm/ F1.7 ASPH Lens

It’s well made, as heavy as a full frame 24-105 but is balanced well on the G9 especially with the battery grip. The clickless aperture is really useful and the manual focus clutch is excellent. It has no IS in the lens but the body IBS works fine.It is very fast at focusing and has no focus breathing that I could see. It is perfect for video and takes 77mm filters. For photography, it has replaced my primes 12/15/25 but I’ve kept the 20mm pancake for portability. It is expensive but in my opinion worth it especially for videographers

I had read lots of reviews about this lens and decided I wouldn't go for it because of its bulk and weight . BUT - I soon got over that when I started using the lens. In fact by using a sling type shoulder strap, I don't notice the weight as much. The 1.7 aperture and the quality of the lens is absolutely stunning. I'm very pleased. In fact, the lens feels comfortable and easy to use on a GH5 body. Also with Panasonic's cashback and Amazon's competitive price, I am starting to get over the shock of how expensive it was. Beautiful lens which I will never sell!

This 10-25 lens is kind of everything the Micro Four thirds was NOT meant for - it's big and it's heavy. But it's also a fine example of what the Micro Four Thirds sensor is capable of when coupled with some of the best glass you can put in front of it.This is quite simply of the best lenses ever, I genuinely believe that. This and the 25-50 couple up to provide you with a superb range which may well cover all scenarios. In years to come when you read lists of the best camera lenses ever, this one *will* be in that list.The 1.7 aperture is constant, so there's none of that closing as soon as you hit zoom! Now, that 1.7 is the optical equivalent of 3.4 on a Full Frame sensor, which makes it easy to compare. I say "optically" because an f-stop of 1.7 is an f-stop of 1.7 regardless of sensor size (it's a mathematical measurement of the fraction of light let in). But 1.7 on a MicroFour Thirds camera gives the same level of bokeh as 3.4 on a full frame camera, which will give some background separation at the widest end and more noticeable separation at the long end.The main advantage of the constant 1.7 aperture is the fact that your MFT camera can shoot in lower light, combine that with the amazing Image Stabilisation of the camera AND this lens combined, and you can find yourself shooting dead-steady in light fast shutter speeds - so no need to boost that ISO!Panasonic cameras are often criticised for their auto-focus, I read other reviewers saying that this performed faster than other lenses at auto-focus and I have to agree. The current Panasonic cameras are not going to become Sony-level in terms of auto-focus with a change of lens, but if you are reliant on auto-focus then this lens gives you more performance.The most impressive aspect of this lens is the sharpness. Usually with a zoom lens you find that the extreme ends and the widest aperture are soft, or at least patchy, but this isn't. Yes, if you stop down you will see some improvements, but even when wide open at 1.7 at 10mm - it looks awesome, it looks (dare I say it?) like a prime lens! I'm not the first to say that, before I got this lens I read many reviews and pretty much all of them said that this lens give the sort of optical performance you expect from a prime. And if you consider the prime lenses this could replace, then this single lens could replace 3 or 4 in your kit-bag.In a nutshell: This is big and it's expensive. But it's also a God-tier lens and if you are committing to Micro Four Thirds then this is one of the best investments you can make. Especially if you're a videographer using a tripod - you won't notice the size/weight, and that constant 1.7 gives you so much light to play with. The lens handles incredibly smoothly, and that size - well, it does look kinda cool doesn't it? Stick this on your GH6 and you look like Steven Spielberg!

Highly recommended. Although it’s big and very expensive (for MFT), it’s very capable too – and I got it with an RRP discount and winter cashback from Panasonic to soften the blow. In effect it replaces a multitude of lenses – but it still costs as much as all of them put together. What you’re paying for is the convenience of one wide-to-standard lens to rule them all, and remarkable sharpness. For me this has replaced a 7-14mm f/2.8 zoom (93% of my usable shots were 10mm+ anyway), a 17mm f/1.8 prime and a 25mm f/1.4 prime. But you could add almost any other sub 25mm MFT prime into that mix. The constant f/1.7 aperture and incredible sharpness even wide open beats all of my other lenses – even Olympus’ own sharp 12-40mm f/2.8. Reviews have said you’d have to go to an Olympus f/1.2 Pro prime to equal or beat this, and I can believe it. Also, for me the DOF and bokeh doesn’t suffer much vs f/1.2 – in fact its slightly larger in-focus range is a little more forgiving in the real world.Speaking of focus, I don’t think there’s a faster or more reliable focusing lens in the entire MFT range, even on Olympus and certainly not a zoom. Shutter speed-wise, indoors at a constant ISO and aperture and at the same focal length as the prime it consistently gives a faster shutter speed on my EM-1 Mk2 than an Olympus f/1.8, despite the miniscule aperture difference, and the same shutter speed as my Panasonic f/1.4 – wondering if this might be because of the huge 77mm front element physically gathering more light.I also compared it to a colleague’s Sigma 18-35mm f/1.8 with a Metabones 0.64 Speedbooster for MFT (taking it to f/1.2). That’s a very popular web pro video combo. This Sigma combo gives a similar focal range of about 12-24mm in MFT terms, but vignettes very noticeably (unusable without post processing) at f/1.2 in the 12-15mm range. And although at f/1.2 the Sigma/Metabones gives a faster shutter speed vs this lens’ f/1.7, there’s not much in it and the PanaLeica has more neutral native colour reproduction, a small edge in sharpness and virtually no vignetting. Also, for me, that extra 2mm on the wide end makes a big difference.Apart from price there are only three downsides that I can see: First, its comparatively large size for MFT, which is especially comedic on a smaller bodied Olympus (see photo on an EM-10). Understandable as it replaces several other lenses, but still a shock if you're used to a compact Oly or Pana prime. It's shorter than the Sigma/Metabones though, and similar in length to the Olympus 12-100 f/4.0. But it has more girth than both (see photo). That said, it’s surprisingly light for its size: 691g vs 956g for the Sigma/Meta and only about 100g heavier than the 12-100. It has similar weather proofing to the Olympus too. Secondly, the supplied hood feels cheap and flimsy and rarely stays on. Thirdly, the intriguing manual aperture ring that sits in front of the focus ring only works on Panasonic cameras. Dear Olympus – it’s worth enabling this via firmware if possible, this lens is almost worth switching to Pana bodies for.

L'obiettivo è perfetto, una delle migliori ottiche M4/3 che si possa desiderare, mi dispiace aver notato che la scatola originale era sprovvista di sigillo e l'ottica avvolta male nel suo panno d'imballaggio, chiaramente era stato aperto, per fortuna non mancava nulla. Dispiace cumunque dover sottolineare che Amazon mi ha venduto un prodotto aperto quindi usato a prezzo pieno come se fosse nuovo

Un monstre ! Énorme ! Bluffant autant par le piqué que par les couleurs et la qualité du cliché. Je n'ai jamais rien vu de tel. Certes ça a un prix, mais le résultat est là. Quelques photos parleront mieux qu'un long discours (pas de retouche, sorties tel quel en raw du boitier)

► EINLEITUNG ◄Bisher habe ich an meiner GH5 mit Sigma 18-35mm f/1.8 und Speedbooster XL (0,64x) bzw. Viltrox Fokalreduktor EF-M2 (0,71x) fotografiert und gefilmt. Nachdem das Objektiv von Panasonic vorgestellt wurde, war ich aber direkt davon überzeugt, dass es das Sigma 18-35mm f/1.8 ersetzen könnte.► VERARBEITUNGSQUALITÄT ◄Das Leica 10-25mm f/1.7 ist super verarbeitet und fühlt sich an meiner GH5 trotz recht hohem Gewicht (mit Gegenlichtblende ca. 700g) gar nicht so schwer an. Beim Sigma 18-35mm f/1.8 (mit Gegenlichtblende und Fokalreduktor ca. 950g) liegt der Schwerpunkt viel weiter vorne, was dafür sorgt, dass Fotografieren und Filmen zum Leistungssport wird. Obwohl der Durchmesser beim Leica größer ist, hat sich die Balance in Kombination mit GH5 sehr viel besser angefühlt. Bis auf die Gegenlichtblende (welche sich im Vergleich zur Gegenlichtblende des Leica 12-60mm f/2.8-f/4 irgendwie billig anfühlt) ist wirklich alles top verarbeitet. Zoom- und Fokusring sind aus Metall und super smooth! Das Objektiv ist laut Panasonic staub- und spritzwassergeschützt und soll wohl auch noch bei bis zu -10°C funktionieren. Dieser Schutz stellt allerdings nur eine Präventivmaßnahme und keine Garantie dar, was ich etwas schade finde. In anderen Worten: Das Objektiv hält sicher ein bisschen Regen und Staub aus, es kann aber trotzdem sein, dass es dadurch beschädigt wird.► FEATURES ◄Die Brennweite gibt es so im MFT-Segment bisher nicht. 10-25mm (20-50mm KB) können super viele Bereiche abdecken und die feste Blende f/1.7 sorgt auch bei wenig Licht für gute Performance! Obwohl das Objektiv ein Zoom ist, fühlt es sich eher wie eine Festbrennweite an, weil das Bokeh auch im Weitwinkelbereich dank der 9 Blendenlamellen butterweich ist. Der Blendenring ist stufenlos, lässt sich aber auch auf "A" einrasten, sodass die Blende über die Kamera eingestellt werden kann. Das meiner Meinung nach beste Feature ist aber der manuelle Fokusring, welcher sich runterziehen lässt und dadurch in einen linearen Modus wechselt, was manuelles Fokussieren endlich zu einer wahren Freude macht. Bisher war dies bei anderen Objektiven von Panasonic vor allem im Videomodus leider nicht so einfach möglich, weil Fly-by-Wire verwendet wurde, was alles andere als linear ist. Olympus bietet diesen linearen Mechanismus übrigens schon seit Jahren bei vielen Objektiven an. Es ist schön, dass endlich auch Panasonic zur Vernunft gekommen ist. Die minimale Fokusdistanz beträgt 28cm. Der Autofokus ist in Fotos und Videos echt schnell und zuverlässig. Von allen MFT Objektiven, die ich bisher so an der GH5 ausprobiert habe, war dieses Objektiv definitiv das mit dem schnellsten Autofokus.► PRO & CONTRA ◄Die wichtigsten Fakten zum Leica 10-25mm f/1.7 auf einen Blick:+ Vielseitiger Brennweitenbereich+ Konstante f/1.7 Blende sorgt für scharfe Bilder bei wenig Licht+ Stufenloser Blendenring mit Automatik-Modus+ Sehr schöne Flares, Kontrast bleibt erhalten+ 9 Blendenlamellen sorgen für weiches Bokeh+ Schneller und zuverlässiger Autofokus+ Manueller Fokus lässt sich linear einstellen+ Minimales Focus-Breathing+ Keine erkennbaren chromatischen Aberrationen+ Minimale Verzerrungen- Gegenlichtblende macht etwas billigen Eindruck- Objektiv wird beim Zoomen größer (kein interner Zoom-Mechanismus)- Bereits bei geringem Gegenlicht Ghosting- Gewicht und Größe- Preis► FAZIT ◄Trotz des hohen Preises bietet das Objektiv eine echte Spitzen-Performance und ist somit absolut empfehlenswert. Wäre das Objektiv nicht so groß und schwer, hätte es sicher nicht die selbe optische Leistung. Ich finde, dass Panasonic hier einen guten Kompromiss getroffen hat. Der bessere Autofokus in Videos, das geringere Gewicht und 5mm mehr im Weitwinkelbereich machen es zum perfekten Ersatz für das Sigma 18-35mm f/1.8. Wer weitere Aufnahmen und Vergleiche vom Objektiv sehen möchte, kann gerne mal nach meinem Namen auf YouTube suchen.

El mejor objetivo que he tenido para el sistema micro 4/3. Espectacular. El único pero es que es grande y pesado, pero si quieres mucha calidad necesitas que sea grande y los cristales no son livianos.

Objectif lumineux très bien conçu malgré un poids mon négligeable