Main trade-off
Sony FE 24-105mm F4 G OSS
F4 gives up a nominal stop at 105 mm. OSS does not recover that subject-motion advantage when the person moves during the exposure.
Head-to-head
Sony 24-105 G vs Sigma 28-105: Wider view or F2.8?
The short answer
Choose Sony for wider rooms and a smaller 105 mm walk-around kit. Choose Sigma when moving people at that same reach make F2.8 useful enough to justify 327 g more lens mass and the 82 mm filter setup. Sony’s OSS helps with camera shake, not a moving subject. A shot that needs F4 removes Sigma’s maximum-aperture advantage for that shot.
Before you choose
The reasoning and the trade-offs
At 105 mm, movement decides whether the extra stop matters
A seated parent photographing a moving performer can keep the same 105 mm reach with either lens. Sigma’s F2.8 then offers a nominal stop for a shorter exposure or lower ISO compared with Sony’s F4, when depth of field allows it. Sony’s documented OSS addresses camera shake and cannot hold a moving performer still. Reverse the decision for a still detail or a group that needs F4, where the extra maximum aperture may not change the shot. Check the actual body, shutter speed and subject before expecting a particular handheld result.
What this is based on
Equal long-end focal length, nominal aperture relationship and the documented role of optical stabilization. No autofocus, transmission or stabilization-stop ranking.
Main trade-off
Sigma 28-105mm F2.8 DG DN Art for Sony E
Its 28 mm wide end excludes Sony’s 24–27 mm coverage. That can require moving back or changing lenses during a group picture.
Sony FE 24-105mm F4 G OSS
- Choose it for
- Choose Sony when family groups need 24 mm and your daily bag or existing 77 mm filters favor the smaller lens.
- Choose Sony for a 105 mm walk-around kit when F4 is sufficient and its documented OSS is useful for still subjects, without expecting it to freeze movement.
- Main trade-off
- F4 gives up a nominal stop at 105 mm. OSS does not recover that subject-motion advantage when the person moves during the exposure.
Sigma 28-105mm F2.8 DG DN Art for Sony E
- Choose it for
- Choose Sigma when moving people at 105 mm can be photographed at F2.8 and the extra lens mass and space fit your actual kit.
- Choose Sigma when a separate wide lens already handles cramped rooms and the brighter long end matters more than keeping the one-lens bag small.
- Main trade-off
- Its 28 mm wide end excludes Sony’s 24–27 mm coverage. That can require moving back or changing lenses during a group picture.
About this comparison
Sony 24-105 F4 G vs Sigma 28-105 F2.8 for Sony E. Keep reach constant, then weigh moving subjects, cramped rooms and the extra lens mass and filter size.
A buyer who wants one lens reaching 105 mm can reasonably consider both. The Sigma keeps F2.8 at that reach, while Sony supplies 24 mm coverage and a substantially smaller published lens package.
Winner by situation
Start with what you need it to do
Moving performers need 105 mm and the shot can use F2.8
Sigma keeps the reach while adding nominal aperture headroom. Exposure, autofocus and subject movement still determine the result.
- Sony FE 24-105mm F4 G OSS
- Good
- Sigma 28-105mm F2.8 DG DN Art for Sony E
- Better fit
The family fits at 24 mm but not 28 mm, with no space to step back
Sony supplies the missing wide coverage without changing lenses. Check group depth of field and faces near the edges.
- Sony FE 24-105mm F4 G OSS
- Better fit
- Sigma 28-105mm F2.8 DG DN Art for Sony E
- Caution
A 105 mm daily kit must reuse the existing 77 mm filter and tight bag compartment
Sony keeps that native thread and smaller stated package. Measure the full stored setup rather than assuming either bare length guarantees a fit.
- Sony FE 24-105mm F4 G OSS
- Better fit
- Sigma 28-105mm F2.8 DG DN Art for Sony E
- Caution
A wide lens and 82 mm filters already travel, and evening motion is frequent
The existing kit reduces Sigma’s coverage and filter penalties. Its extra mass remains, and F2.8 only helps when the shot can use it.
- Sony FE 24-105mm F4 G OSS
- Good
- Sigma 28-105mm F2.8 DG DN Art for Sony E
- Better fit
What matters in practice
The differences that matter
At 105 mm, movement decides whether the extra stop matters
A seated parent photographing a moving performer can keep the same 105 mm reach with either lens. Sigma’s F2.8 then offers a nominal stop for a shorter exposure or lower ISO compared with Sony’s F4, when depth of field allows it. Sony’s documented OSS addresses camera shake and cannot hold a moving performer still. Reverse the decision for a still detail or a group that needs F4, where the extra maximum aperture may not change the shot. Check the actual body, shutter speed and subject before expecting a particular handheld result.
How we reached this conclusion
Equal long-end focal length, nominal aperture relationship and the documented role of optical stabilization. No autofocus, transmission or stabilization-stop ranking.
The same outing may begin much closer to the family
Before the performance, the family may gather in a hallway with no space behind the camera. Sony’s 24 mm wide end covers roughly 16.7% more width than 28 mm from the same position under a distant-plane approximation. That can avoid changing lenses while everyone waits. If a wide lens is already mounted on a second body or will definitely come along, Sigma sacrifices less useful coverage. Count the second body or lens in the real outing, and do not apply this width calculation to close-focus details or assume it prevents edge distortion.
How we reached this conclusion
Calculated width ratio 28 / 24, holding sensor and camera position fixed. The result is approximately 1.167, with close-focus and rendering limitations.
A brighter 105 mm lens also changes tomorrow’s packing
Replacing Sony with the Sony E Sigma adds 327 g of lens mass and 46.6 mm of published length. Its 82 mm thread also leaves an existing 77 mm filter without a direct fit. Check the complete stored lens, cap, hood and filter before deciding that the old daily compartment still works. Then leave that setup ready for the next outing instead of repeatedly rebuilding the bag. A buyer who already uses 82 mm filters and has spare space may face little accessory disruption. These measurements do not predict fatigue or prove that every bag needs replacing.
How we reached this conclusion
990 minus 663 g and 159.9 minus 113.3 mm, using the Sony E Sigma figures. Published lens dimensions are not a packed-bag measurement.
Choice A
Sony, SEL24105G/2
Sony FE 24-105mm F4 G OSS
Choose Sony when family groups need 24 mm and your daily bag or existing 77 mm filters favor the smaller lens.
- Best matched use
- Choose Sony when family groups need 24 mm and your daily bag or existing 77 mm filters favor the smaller lens.
Checked facts
- Moving people at the same reach: 105 mm maximum focal length at F4. Lens OSS is documented.
- A room where stepping back is impossible: 24 mm wide end.
- The actual bag compartment: 663 g and 113.3 mm published lens length.
- The filter kit kept ready: 77 mm native filter thread.
Choice B
Sigma, 636965
Sigma 28-105mm F2.8 DG DN Art for Sony E
Choose Sigma when moving people at 105 mm can be photographed at F2.8 and the extra lens mass and space fit your actual kit.
- Best matched use
- Choose Sigma when moving people at 105 mm can be photographed at F2.8 and the extra lens mass and space fit your actual kit.
Checked facts
- Moving people at the same reach: 105 mm maximum focal length at F2.8.
- A room where stepping back is impossible: 28 mm wide end.
- The actual bag compartment: 990 g and 159.9 mm in Sony E mount.
- The filter kit kept ready: 82 mm native filter thread.
Meaningful differences
What changes the fit
| What changes | Sony FE 24-105mm F4 G OSS | Sigma 28-105mm F2.8 DG DN Art for Sony E | Why it matters |
|---|---|---|---|
| Moving people at the same reach | 105 mm maximum focal length at F4. Lens OSS is documented. | 105 mm maximum focal length at F2.8. | Both reach 105 mm. Sigma adds a nominal aperture stop, while stabilization addresses camera movement rather than subject movement. |
| A room where stepping back is impossible | 24 mm wide end. | 28 mm wide end. | Sony covers about 16.7% more distant-plane width at the same position and on the same sensor. A separate wide lens changes the one-lens decision. |
| The actual bag compartment | 663 g and 113.3 mm published lens length. | 990 g and 159.9 mm in Sony E mount. | Sigma adds 327 g and 46.6 mm before the rest of the kit. Check the stored setup with caps and hood, rather than treating bare lens dimensions as guaranteed bag fit. |
| The filter kit kept ready | 77 mm native filter thread. | 82 mm native filter thread. | An existing 77 mm filter does not directly fit Sigma. An existing 82 mm set can change the accessory calculation, with any Sony adapter setup checked separately. |
What you give up
Every choice has a cost
If you choose Sony FE 24-105mm F4 G OSS
- If you choose Sony for size but still pack an F2.8 lens for evening motion, include that extra lens when judging the complete bag.
If you choose Sigma 28-105mm F2.8 DG DN Art for Sony E
- The Sony E Sigma is 327 g heavier and 46.6 mm longer by the published lens dimensions. Existing 77 mm filters do not directly fit its 82 mm thread.
Recommendation switch
The decision flips if...
The recurring failure is moving subjects at 105 mm and F2.8 provides enough depth of field
Choose Sigma 28-105mm F2.8 DG DN Art for Sony E. Sigma adds nominal exposure headroom without surrendering 105 mm reach. Include the larger lens and filters in the decision.
The recurring failure is fitting the family at 28 mm and one lens must stay mounted
Choose Sony FE 24-105mm F4 G OSS. Sony adds 24–27 mm coverage and keeps the smaller published package.
The intended shots need F4 anyway and the existing 77 mm kit is already packed
Choose Sony FE 24-105mm F4 G OSS. Sigma’s extra maximum aperture does not change those exposures, while Sony preserves the current filter arrangement.
What matters in practice
Before you choose
Keep 105 mm reach constant, then decide whether moving subjects justify F2.8 and the larger complete kit, or whether 24 mm and the existing bag solve more outings.
What this comparison cannot tell you
- Nominal aperture does not establish measured transmission, autofocus success or frozen motion.
- Sony OSS is documented, but no matched camera-and-lens stabilization test is used here.
- Full-frame width calculations hold camera position fixed and do not describe close-focus framing.
What the facts say
What the comparison shows
Useful conclusions from the current sony e-mount lenses comparison, followed by the checked facts used to reach them.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Sony FE 24-105mm F4 G OSS |
|
|
|
| Sigma 28-105mm F2.8 DG DN Art for Sony E |
|
|
Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Sony FE 24-105mm F4 G OSS
Choose Sony when family groups need 24 mm and your daily bag or existing 77 mm filters favor the smaller lens.
Choose Sony for a 105 mm walk-around kit when F4 is sufficient and its documented OSS is useful for still subjects, without expecting it to freeze movement.
See price & reviews on AmazonSigma 28-105mm F2.8 DG DN Art for Sony E
Choose Sigma when moving people at 105 mm can be photographed at F2.8 and the extra lens mass and space fit your actual kit.
Choose Sigma when a separate wide lens already handles cramped rooms and the brighter long end matters more than keeping the one-lens bag small.
See price & reviews on AmazonLinks open in a new tab.