Panasonic Leica DG Vario-Elmarit 100-400mm II: A Lens You Can Trust in the Field?

The Panasonic Leica DG Vario-Elmarit 100-400mm II is a second-generation evolution of a beloved birding lens that’s already proven itself in the field.

This latest version keeps everything that made the original popular—lightweight build, sharp optics, and long reach—but improves usability and adds teleconverter compatibility.

For birders and wildlife photographers who shoot on the Micro Four Thirds system, this lens hits a sweet spot: it’s portable, powerful, and precise, and the bundled filters make it even more field-ready.

Take advantage of the Panasonic Lumix Blooming Spring Savings and elevate your photography with up to $500 in instant rebates on select Lumix cameras and lenses. For a limited time, the featured Panasonic Lumix bundle is available at $1,297.99, reflecting a 19% discount and an immediate $300 in savings. This comprehensive bundle includes a Circular Polarizer (CPL) and UV Filter Kit to enhance image clarity and protect your lens, along with a complete optics cleaning kit to maintain your equipment in optimal condition. Designed for photographers seeking both performance and value, this offer delivers exceptional quality and essential accessories for capturing stunning spring visuals.

Lens Evolution: What’s New in the Mark II Version?

The original Panasonic Leica 100-400mm f/4.0–6.3 lens was released in 2016 and quickly became a go-to for wildlife and sports shooters using Micro Four Thirds. The Mark II version, launched in 2023, builds on that legacy with several key improvements:

• Teleconverter Compatibility: One of the biggest upgrades—this new version supports Panasonic’s DMW-TC14 (1.4x) and DMW-TC20 (2.0x) teleconverters, expanding the reach to 1120mm and 1600mm equivalent respectively.
• Improved Handling: Zoom action is smoother, and it now features a zoom lock ring to prevent lens creep during long hikes or tripod use.
• Better Video Support: Autofocus tracking and aperture transitions are more fluid, which is a nice touch for hybrid shooters capturing both stills and 4K video.
• Refined Weather Sealing: Dustproof and splash-resistant construction is more robust, ideal for unpredictable outdoor conditions.

This lens doesn’t reinvent the wheel, but it polishes it until it shines. And it still delivers Leica-grade optics in a package that’s far more compact than full-frame counterparts.

In-Depth Specs & Features

Here’s a closer look at the technical specs and what they mean in the field.

Field Performance

Reach That Brings Distant Subjects Home

One of the most exciting aspects of the Panasonic Leica DG Vario-Elmarit 100-400mm II is just how far it can reach. With its 800mm full-frame equivalent focal length, it brings distant birds right into your viewfinder without needing to trek into their space. Whether you’re scanning cliff faces for nesting peregrines or watching waterbirds on distant shores, this lens lets you stay put while your subject fills the frame. That kind of reach is invaluable when photographing skittish or rare species.

When paired with the optional 2x DMW-TC20 teleconverter, you’re looking at a massive 1600mm equivalent. This extreme telephoto ability is rarely achievable without bulky tripods and massive primes, but here it fits into a compact, portable design. If you’re tracking hawks in open fields or trying to catch the shimmer of plumage on a treetop tanager, this kind of focal length opens up a whole new world. Even during midday heat haze or tricky lighting conditions, the lens handles contrast well and retains color fidelity.

This kind of reach isn’t just for stills. For videographers, especially those capturing wildlife behavior, the ability to zoom in so tightly without disturbing the scene is game-changing. You can record nesting birds or predator-prey interactions from a safe, ethical distance—all while handheld if your camera supports Dual I.S.

Close-Up Capability of the Panasonic Leica DG 100-400mm

Despite being a long-range zoom, this lens surprises with its impressive close-focusing abilities. At just 1.3 meters (around 4.27 feet) minimum focusing distance, the lens delivers up to 0.5x magnification (1:2 equivalent). That means you can shoot detailed close-ups of subjects like butterflies, flowers, or tree frogs with rich texture and depth. It’s an especially helpful feature in environments like meadows or forest edges where you may encounter small subjects along your path.

If you pair it with the 2x teleconverter, you can even reach 1:1 macro capability, which puts it in rare company among super-telephoto zooms. Unlike most long lenses that struggle with focusing on nearby subjects, the Panasonic Leica 100-400mm II encourages exploration at all distances. You can be photographing a red-tailed hawk perched on a distant pole one moment, and then zoom in on a mantis on a flower stem the next—without changing your lens.

For birders and nature photographers who don’t want to carry a separate macro lens, this dual-purpose capability is a huge bonus. Whether you’re interested in birding, bug-hunting, or capturing morning dew on a spiderweb, the lens proves itself just as useful for fine detail work as it is for distant reach.

Image Stabilization That Works

When you’re zoomed all the way out to 400mm (or 800mm equivalent), even the smallest movement can cause serious image shake. Fortunately, the built-in POWER O.I.S. (Optical Image Stabilizer) works beautifully in real-world conditions. It compensates for camera shake at slower shutter speeds, allowing you to shoot handheld even at the far end of the zoom range—an enormous advantage in the field where using a tripod isn’t always possible or convenient.

What’s more, when used with compatible Panasonic bodies like the GH7 or G9 II, you benefit from Dual I.S. 2—a combined in-lens and in-body stabilization system that delivers up to 6.5 stops of correction. This dual system enables sharp, blur-free images when you’re tracking a bird in flight, recording handheld video, or simply responding quickly to a fleeting moment. It’s especially effective for birders on the move, or those who prefer lighter, more flexible setups without a tripod.

Even in lower light—such as during golden hour or under a forest canopy—the stabilization keeps the frame steady and the image crisp. You’ll notice fewer ruined shots from micro-blur, and more keepers even in challenging conditions. Whether you’re panning, tracking, or simply waiting quietly for a subject to emerge, the O.I.S. keeps your work sharp and dependable.

Pros & Cons

Pros

• Exceptional Reach in a Compact Body
  Equivalent to 800mm on full-frame, yet easily fits in a daypack.
• Teleconverter Support
  Boost reach up to 1600mm while maintaining great image quality.
• Sharp, Contrast-Rich Images
  True Leica optical performance across the zoom range.
• Weather Sealed for Real-World Use
  Built to endure field conditions, from forest humidity to dusty plains.
• Macro-Like Close Focus
  Versatility for close-up shots and small subjects.
• Stabilization and AF Speed
  Accurate and fast focus with reliable handheld sharpness.
• Great for Video
  Smooth aperture control and tracking AF for hybrid shooters.

Cons

• Variable Aperture
  f/4.0–f/6.3 means limited light at the long end; not ideal for low light without a tripod.
• Heavier Than Kit Zooms
  At nearly 1kg, it’s not ultra-light, but still manageable compared to full-frame gear.
• Pricey Accessories (Teleconverters)
  To reach 1600mm, you’ll need to invest in additional gear.

What Is In The Bundle?

Hoya NXT Plus 72mm 10-Layer HMC Multi-Coated Circular Polarizer Lens Filter

The Hoya NXT Plus 72mm Circular Polarizer is a must-have for outdoor photographers looking to boost contrast, cut glare, and bring out richer colors in every frame. Whether you’re shooting birds through water or trying to cut reflections off shiny leaves and feathers, this filter helps reveal the true details behind the glare. Built with Hoya’s 10-layer HMC multi-coating and waterproof top layer, it handles tough outdoor conditions with ease—mud, rain, fingerprints, they all wipe off clean. The slim aluminum frame keeps things lightweight and avoids vignetting, even when using wide-angle lenses. And with easy front threading, you can stack it or keep your lens cap in place without removing it. Simply rotate the ring until reflections vanish, and your scene snaps into vivid life—deep blue skies, crisp plumage, and no annoying window glare. It’s a small tool that makes a big difference.

Hoya NXT Plus 72mm 10-Layer HMC Multi-Coated UV Lens Filter

The Hoya NXT Plus 72mm 10-Layer HMC Multi-Coated UV Lens Filter is a lightweight yet tough essential for anyone shooting in the great outdoors. It offers solid protection against scratches, dust, and moisture while also cutting through atmospheric haze that can dull your images—especially in high-altitude or coastal environments. Built with precision-polished Schott B270 optical glass and topped with a waterproof, smudge-resistant coating, it’s incredibly easy to keep clean in the field. The 10-layer anti-reflective coating boosts contrast and clarity without compromising light transmission (up to 98%), so you can leave it on your lens full-time with no loss in image quality. Its slim aluminum frame won’t cause vignetting, even on wide lenses, and includes front threading for stacking filters or attaching your lens cap. If you’re a birder or landscape photographer looking for clear, crisp shots and worry-free lens protection, this UV filter is a smart, reliable upgrade.

Complete Optics Care and Cleaning Kit

The ProOptic Complete Optics Care and Cleaning Kit is an all-in-one solution designed to keep your lenses, binoculars, scopes, and screens in pristine condition, whether you’re out in the field or editing at home. Housed in a weather-resistant nylon carrying case with a Velcro closure, the kit includes everything you need to safely clean optical surfaces without risk of damage. The 7×7″ microfiber cloth lifts smudges and dust without abrasion or residue and is washable for repeated use. A rubber air blower gently removes debris from lens surfaces and camera sensors without physical contact, minimizing the risk of scratches. The alcohol-free lens cleaning spray breaks down stubborn grime without harming coatings, while 10 individually wrapped lens cleaning wipes tackle streaks and smears with antibacterial and antistatic treatment. A retractable fine brush reaches dust in hard-to-clean edges, like filter threads and crevices. Together, this compact and versatile kit ensures your gear stays spotless and high-performing wherever your photography takes you.

Adorama Microfiber Cleaning Cloth

The Adorama Microfiber Cleaning Cloth (Small, 5.8×5.8″) is a compact yet essential tool for keeping your photography and optical gear in pristine condition. Made from ultra-fine microfiber, it delivers a particle-free and lint-free clean, ensuring no scratches or residue are left behind on sensitive surfaces like lenses, viewfinders, or screens. Its softness makes it ideal for cleaning delicate equipment including cameras, camcorders, binoculars, and even personal items like jewelry and watches. Small enough to tuck into any camera bag or pocket, this 5.8×5.8″ cloth is perfect for quick, on-the-go touch-ups or detailed cleaning at home. Users consistently praise its durability and superior cleaning performance, often noting it outperforms standard microfiber options. This cloth is a simple yet reliable way to maintain clarity and cleanliness wherever your adventures take you.

Camera Suggestions – What to Pair with the Panasonic Leica 100-400mm II Lens

Choosing the right camera body to match this versatile ultra-telephoto zoom is key—especially for birding, wildlife, and outdoor photography. Since it uses the Micro Four Thirds (MFT) mount, this lens pairs beautifully with a wide range of Panasonic and OM System cameras. Here’s a look at some of the best options, including the newly released Panasonic GH7.

Panasonic GH7 – The Flagship Hybrid Choice

If you’re looking for cutting-edge performance and the best of both photo and video worlds, the Panasonic GH7 is the new powerhouse in Panasonic’s lineup. It features a 25.2MP BSI sensor, phase-detection AF, and ProRes 4:2:2 10-bit video recording—all housed in a weather-sealed body built for outdoor challenges.

• Why it’s great for the 100-400mm II: It takes full advantage of the lens’s O.I.S. system and enables fast, accurate animal tracking thanks to its upgraded AF.
• Ideal for: Birders who also shoot 4K/6K wildlife video, content creators, hybrid shooters.
• Bonus: Internal fan allows for unlimited video recording, and Dual I.S. 2 means exceptional stability even at 800mm+ equivalent.

Read a full review – Panasonic LUMIX GH7: A Significant Upgrade?

Panasonic Lumix G9 II – Fast, Smart, Lightweight

The Panasonic Lumix G9 II is a photographer’s dream—especially for birding. With the same 25.2MP BSI sensor and Phase Hybrid AF as the GH7, it offers fast burst shooting (up to 60 fps), deep learning subject recognition, and a tough, compact body.

• Why it’s great: It’s lighter than the GH7 and tailored more toward photography-first users.
• Ideal for: Wildlife photographers, birdwatchers, action shooters.
• Bonus: Stunning handheld hi-res mode and great in-body stabilization.

OM System OM-1 – The Speed King

While not a Panasonic camera, the OM System OM-1 Mark II is fully compatible with this lens and offers insanely fast burst speeds (up to 120 fps), weather sealing, and superb in-body stabilization.

• Why it’s great: It’s the fastest and most weather-resistant body in the MFT world.
• Ideal for: Photographers who prioritize speed and rugged reliability in challenging conditions.
• Bonus: Computational features like Live ND and handheld high-res shooting.

Panasonic Lumix G97 – Compact Power with Practical Upgrades

If you’re looking for a lightweight camera that punches above its weight, the Panasonic Lumix G97 is a smart, budget-friendly companion. It builds on the success of its predecessor with the same 20.3MP Micro Four Thirds sensor, Dual I.S. 2 stabilization, and a fully articulating LCD screen—perfect for field work and spontaneous creativity. It’s compact enough to throw into your daypack but powerful enough to deliver sharp results, even with long lenses like the Leica DG 100-400mm.

• What makes it shine: The G97 retains strong video features like mic and headphone jacks, and its V-Log L support gives you more flexibility for color grading. It also includes useful ergonomics, intuitive controls, and weather-sealing—essentials when you’re outdoors chasing light and wildlife.
• Ideal for: Beginners moving up from smartphones, casual birdwatchers, and travelers who want high quality without the bulk. It’s also great for hybrid shooters dabbling in both video and stills.
• Bonus: You’ll appreciate the built-in USB charging, making it easy to top off the battery on the go with a power bank—handy for remote birding trips or long hikes off the grid.

Read a full review – New Panasonic LUMIX G97: A Creative Tool for Hybrid Shooters

Quick Comparison Table

So, pairing the Panasonic Leica 100-400mm II with a powerful MFT camera unlocks its full potential. If video is a major part of your workflow, the GH7 is the clear winner—built for serious creators and serious outdoor use. For a stills-focused setup, the G9 II offers speed and precision. And if you want rugged speed with advanced features, the OM-1 brings the best of Olympus innovation into play.

Final Thoughts: A Birding Powerhouse in a Backpack-Friendly Size

If you shoot wildlife with a Micro Four Thirds camera, this lens delivers everything you want—reach, clarity, durability, and flexibility. The Panasonic Leica DG Vario-Elmar 100-400mm f/4-6.3 II ASPH. POWER O.I.S. lens takes the beloved original and adds thoughtful upgrades for modern birders and content creators alike. Whether you’re an experienced bird photographer, an avid traveler, or just starting out in wildlife and nature photography, assembling the right gear can make all the difference in the field.

This lens stands out as a highly versatile and portable super-telephoto zoom, offering both impressive reach and close-up capabilities—ideal for capturing everything from distant eagles to detailed macro shots of insects. When paired with powerful, field-ready cameras like the Panasonic GH7, G9II, or even the budget-friendly G97, you’ll have a lightweight, weather-sealed, and feature-rich setup that can go anywhere and handle almost anything.

To complete your kit, don’t overlook the importance of essential accessories. A high-quality circular polarizer, like the Hoya NXT Plus 72mm, enhances your images by cutting reflections and boosting contrast, while the UV filter protects your lens and improves image clarity in hazy conditions. Keeping your gear in top shape is just as important—cleaning tools like the Pro Optic Complete Optics Care and Cleaning Kit and the Adorama Microfiber Cloth ensure your lenses remain spotless, delivering crisp, flawless results shot after shot.

And with the current $300 discount and a bundle that includes 72mm UV & CPL filters and a cleaning kit, it’s a standout value. If you’re serious about wildlife photography, this lens deserves a place in your pack.