The catch
Panasonic LUMIX G9II body
It is 162g heavier before the lens and uses a different battery family. SSD recording disables its SD recording and duplication.
Side by side
Panasonic LUMIX G9II vs OM SYSTEM OM-3: G9II holds eligible card copies, OM-3 weighs less and has more lead-in time
Quick verdict
G9II can make eligible card copies. OM-3 weighs 162g less and can hold a longer configured pre-shutter window. G9II is the choice for supported dual-SD stills and movies, and OM-3 is the choice when daily carrying and a longer configured lead-in count for more. Both offers are body-only. OM-3 has a single card. SSD recording on G9II disables its cards, and pre-capture on either body is limited by lens, focus, temperature and electronic shutter.
Before you buy
Why, and what it costs you
Capturing the start of the action is not the same as sampling it more often
A dog can launch into a jump before you fully press the shutter, particularly when you are also chatting with a child on the walk. At the specified 20fps settings, the G9II saves up to 30 pre-shutter frames and the OM-3 up to 70. That works out to 1.5 seconds against a nominal 3.5 seconds. The G9II can save more frames at a faster rate within its 1.5-second window, but those frames do not reach any further back in time. At this setting, then, the OM-3 speaks more directly to a late-reaction problem. On either camera, check the lens, the focus mode and the lighting. A longer buffer does not mean sharper moving subjects, and electronic shutter can introduce distortion.
Where this comes from
30/20=1.5 and 70/20=3.5 seconds, using nominal rates and maximum configured buffers. No measured reaction, focus or keeper-rate claim is made.
The catch
OM SYSTEM OM-3 body
It has one SD card. On the OM-3, RM-WR2 works wirelessly, and its cable is not a supported wired release for this body.
Panasonic LUMIX G9II body
- Why pick it
- Two eligible still or movie copies need to be made before you leave the event, using suitable cards and Backup selected.
- For a planned recording you need a documented wired remote connection along with separate microphone and headphone sockets.
- The catch
- It is 162g heavier before the lens and uses a different battery family. SSD recording disables its SD recording and duplication.
OM SYSTEM OM-3 body
- Why pick it
- A 162g lighter body is worth having on an ordinary family outing, and you will use the same compatible lens.
- Unpredictable outdoor movement is where a longer configured pre-shutter window helps, as long as you have checked exact lens and focus support.
- The catch
- It has one SD card. On the OM-3, RM-WR2 works wirelessly, and its cable is not a supported wired release for this body.
We may earn a commission from qualifying Amazon purchases. How we make money
What this page compares
Outdoor pets, family outings and important recordings, looked at for G9II and OM-3. Pre-capture time, two-card copies and the equipment that stays in the bag are compared.
Both current, stabilized Micro Four Thirds bodies fit a similar kind of enthusiast, one who moves between daily photography and family recording. With compatible lenses already owned, the differences in body, battery and recording are the questions that matter when buying.
Which one fits
Pick the situations that sound like you
Carry the same lens in a lighter everyday bag
On the published body basis, the OM-3 saves 162g.
- Panasonic LUMIX G9II body
- Good
- OM SYSTEM OM-3 body
- Better fit
Copy an eligible movie within the body
The G9II works with two properly configured SD cards.
- Panasonic LUMIX G9II body
- Better fit
- OM SYSTEM OM-3 body
- Not suitable
Hold a longer configured lead-in at 20fps
At the specified maximum, the OM-3 gets to a nominal 3.5 seconds.
- Panasonic LUMIX G9II body
- Good
- OM SYSTEM OM-3 body
- Better fit
Connect a wired remote that is documented
The G9II has its own socket. On the OM-3, RM-WR2 works wirelessly only.
- Panasonic LUMIX G9II body
- Better fit
- OM SYSTEM OM-3 body
- Caution
In practice
Differences you will notice
Capturing the start of the action is not the same as sampling it more often
A dog can launch into a jump before you fully press the shutter, particularly when you are also chatting with a child on the walk. At the specified 20fps settings, the G9II saves up to 30 pre-shutter frames and the OM-3 up to 70. That works out to 1.5 seconds against a nominal 3.5 seconds. The G9II can save more frames at a faster rate within its 1.5-second window, but those frames do not reach any further back in time. At this setting, then, the OM-3 speaks more directly to a late-reaction problem. On either camera, check the lens, the focus mode and the lighting. A longer buffer does not mean sharper moving subjects, and electronic shutter can introduce distortion.
How we worked this out
30/20=1.5 and 70/20=3.5 seconds, using nominal rates and maximum configured buffers. No measured reaction, focus or keeper-rate claim is made.
With the lighter walking camera, make the off-camera copy sooner
Before the same lens, the OM-3 saves 162g, and that can count when the camera shares a bag with the rest of the family’s things. It also has one card. The G9II’s two slots can make eligible simultaneous copies of stills and movies, so someone entrusted with an important event may accept the extra weight in order to leave with two files already recorded. That is a different need from taking repeatable photographs on a casual walk. Set Backup on purpose and check the cards and the movie mode. Switching G9II SSD recording on disables the cards. Either camera still needs a verified off-camera copy, because two cards in one body give no protection if the whole bag is lost.
How we worked this out
658-496=162g, with one slot set against eligible dual-SD Backup and the SSD exception. No quantified failure probability and no comfort claim.
The control and charging routine does not come along just because the lens does
With a compatible Micro Four Thirds lens, either body can look like an easy switch. The smaller accessories deserve a check as well. The G9II takes BLK22 and the OM-3 takes BLX-1, so spare batteries a household already has may no longer be shared. The G9II also has its own wired remote socket. The OM-3 supports RM-WR2 only over a wireless link. When a camera goes back and forth between an outdoor bag and a fixed home filming position, those differences can change how you power and trigger it. Price the exact spares and the control method before you pick the body. And do not assume a familiar mount makes every lens function or accessory connection interchangeable.
How we worked this out
Covers exact battery families and remote inventories. What a household already owns is conditional, and exact accessory compatibility must still be confirmed.
Option A
Panasonic, DC-G9M2BODY
Panasonic LUMIX G9II body
Two eligible still or movie copies need to be made before you leave the event, using suitable cards and Backup selected.
- Best for
- Two eligible still or movie copies need to be made before you leave the event, using suitable cards and Backup selected.
Facts we checked
- Body with battery and one card: 658g
- Configured pre-shutter window at 20fps: Up to 30 frames, 1.5 seconds
- Internal media: Two UHS-II SD slots
- Wired remote connection: Separate 2.5mm socket
Option B
OM SYSTEM, V210050SW000
OM SYSTEM OM-3 body
A 162g lighter body is worth having on an ordinary family outing, and you will use the same compatible lens.
- Best for
- A 162g lighter body is worth having on an ordinary family outing, and you will use the same compatible lens.
Facts we checked
- Body with battery and one card: 496g
- Configured pre-shutter window at 20fps: Up to 70 frames, nominal 3.5 seconds
- Internal media: One UHS-II SD slot
- Wired remote connection: Wired RM-WR2 use unsupported
Spec by spec
Where they really differ
| Spec | Panasonic LUMIX G9II body | OM SYSTEM OM-3 body | In practice |
|---|---|---|---|
| Body with battery and one card | 658g | 496g | Before the same lens, OM-3 saves 162g. |
| Configured pre-shutter window at 20fps | Up to 30 frames, 1.5 seconds | Up to 70 frames, nominal 3.5 seconds | A longer window helps late reactions and leaves autofocus accuracy alone. |
| Internal media | Two UHS-II SD slots | One UHS-II SD slot | The backup routine changes when eligible capture-stage duplication is available. |
| Wired remote connection | Separate 2.5mm socket | Wired RM-WR2 use unsupported | A shared remote accessory can still mean a different control method. |
| Battery family | DMW-BLK22 | BLX-1 | Your lens may carry over, but your spare batteries will not. |
Trade-offs
What each pick costs you
With Panasonic LUMIX G9II body
- Neither offer includes lenses. Add BLK22 spares and suitable cards. A matching MFT mount does not by itself guarantee every coordinated lens feature.
With OM SYSTEM OM-3 body
- Add BLX-1 spares and an off-camera copy routine. A qualified outdoor setup still calls for the correct lens and closed covers.
Change of plan
When the answer changes
Capture-stage copies and a wired home setup come first
Go with Panasonic LUMIX G9II body. The G9II has the card and connection options that matter here.
Daily carry and pre-shutter lead-in come first
Go with OM SYSTEM OM-3 body. The OM-3 puts that combination in a lighter body.
Decision guide
Before you buy
A camera light enough for ordinary walks is the aim, together with a way to recover a missed moment and protect an important recording before you get home.
What this page can’t tell you
- Autofocus, weather survival and grip comfort were not compared by measurement.
- Having a longer pre-shutter window does not promise a usable photograph.
By the numbers
What the data shows
What we found across the mirrorless cameras we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Panasonic LUMIX G9II body |
|
| |
| OM SYSTEM OM-3 body |
|
|
Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Panasonic LUMIX G9II body
Two eligible still or movie copies need to be made before you leave the event, using suitable cards and Backup selected.
For a planned recording you need a documented wired remote connection along with separate microphone and headphone sockets.
See price & reviews on AmazonOM SYSTEM OM-3 body
A 162g lighter body is worth having on an ordinary family outing, and you will use the same compatible lens.
Unpredictable outdoor movement is where a longer configured pre-shutter window helps, as long as you have checked exact lens and focus support.
See price & reviews on AmazonEach link opens in a new tab.
We may earn a commission from qualifying Amazon purchases. How we make money