Dynamic Range in Cameras: What the Numbers Actually Mean

Every camera manufacturer publishes dynamic range figures. Sony claims 16 stops for the a7 V. Canon's marketing documentation for the R1 lists a 13-plus stop figure. Photons to Photos, which measures sensor output directly from RAW files, put the Sony a7 V at 12.47 PDR. The Fujifilm GFX100 II — a 102 MP medium-format camera — measures 12.55 PDR on the same chart. These numbers are not contradictory. They are measuring different things, using different methodologies, with different noise thresholds as the cutoff. Understanding which measurement is which matters, because buying a camera based on a marketing figure instead of a measured one is a predictable way to be disappointed.

This article covers what Photographic Dynamic Range (PDR) actually measures, why it produces numbers that look different from other sources, which cameras lead in 2026 on the verified data, and where the confirmed data ends and estimation begins.

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The technical problem

"Dynamic range" in photography describes the range between the dimmest detail a sensor can record (before it drowns in noise) and the brightest detail it can record (before highlights clip to white). The measure is in stops: each stop represents a doubling or halving of light. A camera with 12 stops of DR can hold detail across a scene where the brightest area receives 4,096× more light than the dimmest area.

The problem is that this range is not a binary — it fades. At the bright end, clipping is abrupt: one photon too many and the pixel reports white. At the dark end, noise increases gradually as signal decreases. Where you draw the line between "usable shadow detail" and "shadow noise" determines your DR figure. Draw the line at 1:1 signal-to-noise ratio (one photon of signal for every photon-equivalent of noise), and you get a conservative measurement. Draw the line at 0.1:1 and you get a more generous figure.

Sony's 16 stops figure uses Sony's own methodology. Photons to Photos' PDR chart uses a specific signal-to-noise threshold that produces consistent cross-camera comparisons at the cost of producing absolute numbers that are lower than marketing claims for every camera they test. Neither figure is wrong — they are different answers to a slightly different question. For cross-camera comparison, the Photons to Photos PDR chart is the most consistent published source because it applies the same methodology to every camera. DXOMark's Landscape Score uses yet another methodology, producing numbers roughly 2–3 points higher than P2P PDR for the same cameras (e.g., Z8: DXOMark 14.2 EV vs P2P PDR 11.32).

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The formula and why it matters

Photons to Photos calculates PDR using this framework:

PDR = log₂(Full-well capacity / Read noise floor)

where:

• Full-well capacity: the maximum number of photons a pixel can record before clipping
• Read noise floor: the electronic noise introduced by the analog-to-digital conversion process, measured in electrons-equivalent

The result is the number of stops between the noise floor and the clipping point. A sensor with a 4,000-electron full-well capacity and a 3-electron read noise floor produces:

PDR = log₂(4000 / 3) = log₂(1333) ≈ 10.4 stops

Two variables move this number. Larger pixels collect more photons before clipping (higher full-well capacity), which raises the upper bound. Quieter electronics produce less read noise, which lowers the floor. The best sensors improve both simultaneously. Speed-optimized stacked sensors often trade read noise performance at base ISO for faster readout speed.

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How we measured

We did not conduct our own lab measurements. The data in this article derives from:

Photons to Photos (photonstophotos.net): the most comprehensive publicly available sensor read noise database. All PDR figures cited as confirmed are from this source, verified via published analysis from Brian Smith Photography (Sony a6700), FujiAddict (Fujifilm X-T5, X-H2, X-H2S, X-T4), NikonRumors (Nikon Z8), SonyAddict (Sony A9 III), CanonWatch (Canon EOS R7), and PetaPixel (Sony a7 V, December 2025; Canon R5 II vs Z8 vs a7R V comparison, October 2024).

PetaPixel testing: their DR comparisons cross-reference Photons to Photos PDR data with in-camera test shots. Their October 2024 piece compared the Sony a7R V, Nikon Z8, and Canon EOS R5 II directly and reported the range as 11.82–12.47 PDR.

Review consensus: for cameras without confirmed Photons to Photos figures, we reference DPReview testing notes and independent reviewers who have compared sensor latitude directly. These estimates are flagged throughout as PENDING or Estimated.

All ISO 100 figures unless otherwise noted. PDR values are per-pixel — they do not normalize for sensor size or total pixel count.

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Master table

This table ranks 20 cameras by PDR at ISO 100. Confidence levels: Confirmed = directly verified from Photons to Photos via published secondary source; Partial = single source, needs cross-check; Estimated = derived from review comparisons, ordering directionally correct; PENDING = no reliable source found, do not cite as fact.

Brand	Model	Sensor type	MP	Pixel pitch (µm)	PDR @ ISO 100	Confidence
Fujifilm	GFX100 II	Medium format BSI	102	~3.76	12.55	Confirmed (reference)
Sony	a7 V	FF partial-stacked BSI	33	5.10	12.47	Confirmed
Canon	EOS R5 II	FF BSI	45	4.39	11.82	Confirmed
Sony	A7C II	FF BSI	33	5.10	11.69	Confirmed
Sony	a7R V	FF BSI	60.2	3.76	11.69	Confirmed
Sony	A1 II	FF stacked BSI	50	4.16	11.61	Confirmed
Sony	A7 IV	FF BSI	33	5.10	11.57	Confirmed
Canon	EOS R6 II	FF BSI	24.2	5.98	11.52	Confirmed
Nikon	Z8	FF stacked BSI	45.7	4.35	11.32	Confirmed
Canon	EOS R1	FF stacked BSI	24.2	6.00	~11.0–11.5	Estimated
Nikon	Z5 II	FF BSI	24.5	5.92	11.13	Confirmed
Sony	a6700	APS-C BSI	26	3.76	10.93	Confirmed
Fujifilm	X-H2	APS-C X-Trans BSI	40.2	3.04	10.75	Confirmed
Nikon	Z9	FF stacked BSI	45.7	4.35	10.61	Confirmed
Canon	EOS R7	APS-C BSI	32.5	3.20	10.49	Confirmed
Nikon	Z50 II	APS-C BSI	20.9	4.20	10.47	Confirmed
Fujifilm	X-T4	APS-C X-Trans BSI	26.1	3.76	10.45	Confirmed
Nikon	Z6 III	FF partial-stacked BSI	24.5	5.92	10.44	Confirmed
Fujifilm	X-T5	APS-C X-Trans BSI	40.2	3.04	10.43	Confirmed
Fujifilm	X-H2S	APS-C stacked BSI	26.1	3.76	10.04	Confirmed
Sony	A9 III	FF global shutter	24.6	5.94	10.00	Confirmed
Fujifilm	X-S20	APS-C BSI	26	3.76	PENDING	PENDING
Nikon	Z30	APS-C BSI	20.7	4.22	PENDING	PENDING

Fujifilm GFX100 II included as medium-format reference point only, not a purchasing recommendation in this article's context.

¹ Sony a7R V PDR 11.69 at ISO 100: confirmed via PetaPixel October 2024 comparison (Sony a7R V vs Nikon Z8 vs Canon R5 II), which cites Photons to Photos directly.

² Sony a6700 PDR 10.93 Confirmed (Photons to Photos direct lookup, Javier verified 20 May 2026) — best-performing APS-C sensor in the P2P database.

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Reading the table

The medium-format reference reveals the scale. The Fujifilm GFX100 II, a $7,499 medium-format camera with a 102 MP sensor, measures 12.55 PDR. The Sony a7 V, a $2,899 full-frame body, measures 12.47 PDR. A 0.08-stop difference. PetaPixel's December 2025 analysis described this as "on par with medium format" — which is accurate in the strictest PDR measurement sense. For photographers who purchased medium-format cameras partly for DR headroom, this comparison is worth sitting with. The a7 V's partially-stacked sensor architecture changed what full-frame can achieve at base ISO.

Speed cameras do not lead in dynamic range. The Sony A9 III, at $5,999 and 120 fps, measures 10.00 PDR at ISO 100 — the lowest confirmed value in this table. The Canon R1, at $6,299 and 40 fps, likely falls between 11.0–11.5 PDR (estimated). Both are flagship cameras by any definition — and both sacrifice base-ISO DR to enable their readout speeds. The stacked sensor architectures required for fast electronic bursts introduce additional read noise at base ISO, which shifts the noise floor upward and compresses the PDR figure. At ISO 3200 and above, the gap narrows, and stacked sensors sometimes outperform conventional BSI sensors because faster readout reduces pattern noise at higher gain. The A9 III is not a poor camera for DR — it is a camera optimized for a different primary metric.

Sony and Canon have different strengths in full-frame DR at ISO 100. Among the confirmed values, the Sony a7 V leads at 12.47 PDR. The Canon EOS R5 II comes in at a confirmed 11.82 PDR. The Nikon Z8, which shares its stacked BSI sensor with the Z9, measures 11.32 PDR — lower than the R5 II by 0.5 stops, despite often being grouped with it in the high-resolution full-frame tier. This ordering matters for wildlife and landscape photographers who compare these three cameras: R5 II has a measured DR advantage over Z8 at base ISO, while trailing the Sony cameras that use conventional or partial-stacked BSI architecture.

The APS-C premium sensors perform well within their format. The Sony a6700's confirmed 10.93 PDR (Photons to Photos direct lookup, verified 20 May 2026) places it above every other APS-C camera in this table, and above the speed-optimized full-frame Sony A9 III (10.00) and Nikon Z9 (10.61). The X-H2, at 10.75 PDR, ranks just below the a6700; the X-T5 sits at 10.43 PDR. The X-H2S, at 10.04 PDR, pays the stacked-sensor DR penalty in exchange for 40 fps burst. These confirmed APS-C values cluster between 10.00 and 10.93, placing the best APS-C sensors above stacked full-frame bodies optimized for speed, though below the conventional BSI full-frame leaders.

The A7C II insight. The Sony A7C II (33 MP, 5.10 µm, $2,299) measures 11.69 PDR — equal to the a7R V's partial figure and 0.08 stops below the Canon R5 II. The notable point: at $2,299, the A7C II delivers the same confirmed PDR as the R5 II's approximate tier at nearly half the price. The trade-offs are resolution (33 MP versus R5 II's 45 MP), single card slot instead of dual, and a compact body that sacrifices some ergonomic depth for portability. For landscape and portrait photographers whose primary constraint is dynamic range at base ISO rather than resolution or burst speed, the A7C II represents the highest PDR-per-dollar in the current full-frame market.

The Panasonic L-mount caveat. Panasonic cameras (Lumix S5 II, S5 IIX, S1 II) apply noise reduction processing to RAW files on some models — meaning the RAW data delivered to post-processing software is not fully unprocessed sensor output. Photons to Photos PDR measurements on affected Panasonic models may overstate usable DR because NR has already smoothed out part of the noise floor. This is a known issue documented in the camera community. Panasonic models are not included in our table above for this reason: the data cannot be cleanly verified. Verify current firmware behavior per model before citing any Panasonic PDR figure.

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Edge cases

The ceiling: where does DR stop improving? The Fujifilm GFX100 II at 12.55 PDR and the Sony a7 V at 12.47 represent the current practical ceiling for commercially available photographic sensors. Further improvement faces physical limits: full-well capacity scales with pixel area (larger pixels hold more photons), while read noise improvement has diminishing returns as circuit design approaches thermal noise limits. Medium-format sensors are larger per pixel than full-frame; that is why they historically led in DR. The a7 V's partially-stacked sensor closes that gap through read noise reduction, not pixel size — a notable engineering achievement.

The floor: global shutter and speed cameras. The Sony A9 III at a confirmed 10.00 PDR represents the lowest confirmed full-frame value in this table. At 120 fps global shutter, the A9 III is capturing images 8.3 ms apart. The global shutter architecture — where every pixel reads simultaneously rather than in a rolling scan — introduces additional capacitance and circuitry per pixel that raises the noise floor. For sports and action photographers who need 120 fps and global shutter flash sync, this trade-off is explicit and accepted. For photographers who need both maximum DR and maximum speed, no single body currently provides both.

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Which camera would we buy for dynamic range today

If DR at base ISO is the primary criterion — for landscape, high-contrast portrait, or astrophotography foreground recovery — the Sony a7 V ($2,899) is the best-confirmed full-frame body in 2026. Its 12.47 PDR leads the full-frame field, and its 33 MP provides adequate resolution for most use cases. The Sony a7R V at $3,499 reaches 11.69 PDR at ISO 100 (confirmed) at higher resolution but with smaller, noisier-at-high-ISO pixels.

If APS-C is the format — for budget reasons or for crop factor reach — the Sony a6700 ($1,399) leads the APS-C field at a confirmed 10.93 PDR (Photons to Photos direct lookup, verified 20 May 2026). The Fujifilm X-H2 (10.75 PDR) and X-T5 (10.43 PDR) are the next confirmed values. For landscape and night sky photography where shadow recovery matters, the a6700 is the APS-C starting point.

If you need speed and DR both — the Canon EOS R5 II ($3,999, 30 fps, 11.82 PDR) is the best confirmed combination of burst rate and base-ISO dynamic range in the high-resolution full-frame tier. The Nikon Z8 ($3,999, 20 fps, 11.32 PDR) offers nine-category subject detection and a smaller body at 0.5 stops lower confirmed DR. For photographers optimizing specifically for DR alongside burst, the R5 II holds a measured advantage over the Z8.

Do not optimize for DR if your work lives at ISO 3200+. At high ISO, the DR advantage of conventional BSI sensors over stacked sensors narrows and sometimes reverses. The Canon R1 and Sony A9 III — both stacked — handle high-ISO noise more consistently than their base-ISO PDR would predict.

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Affiliate block

The cameras that represent the best DR-to-price points in current production, based on confirmed Photons to Photos data:

• Sony a7 V (FF, 12.47 PDR Confirmed, $2,899) Buy on Amazon →
• Sony a7R V (FF, 11.69 PDR Confirmed, $3,499) Buy on Amazon →
• Canon EOS R5 II (FF, 11.82 PDR Confirmed, $3,999) Buy on Amazon →
• Nikon Z8 (FF, 11.32 PDR Confirmed, $3,999) Buy on Amazon →
• Sony a6700 (APS-C, 10.93 PDR Confirmed, $1,399) Buy on Amazon →

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Sources

Photons to Photos PDR chart: photonstophotos.net/Charts/PDR.htm — the primary dataset. All PDR values in this article originate from this chart or from published analyses that cite it directly.

Sony a7 V PDR 12.47: PetaPixel, December 2025, "Sony a7 V Dynamic Range Performance Is On-Par With 100MP Medium Format Cameras." Direct reference to Photons to Photos PDR measurement.

Canon R5 II PDR 11.82 + Z8 PDR 11.32 + a7R V PDR 11.69 (partial): PetaPixel, October 2024, "Sony a7R V vs Nikon Z8 vs Canon R5 II: Which High-Res Camera is Best?" References Photons to Photos PDR comparison. Note: Z8 PDR of 11.32 is also confirmed by NikonRumors citing P2P; DXOMark separately reports Z8 at 14.2 EV (a different scale — not P2P).

Sony A9 III PDR 10.00: SonyAddict citing Photons to Photos. Consistent with global shutter architecture read-noise penalty documented across multiple review sources.

Fujifilm X-T5 PDR 10.43, X-H2 PDR 10.75, X-H2S PDR 10.04, X-T4 PDR 10.45: FujiAddict citing Photons to Photos analysis. Consistent with Fujifilm's stacked vs non-stacked architecture differentiation.

Canon EOS R7 PDR 10.49: CanonWatch citing Photons to Photos.

Nikon Z6 III PDR 10.44: PetaPixel citing Photons to Photos analysis.

Sony a6700 Photons to Photos test: Brian Smith Photography, "Photons to Photos Sony a6700 Dynamic Range Test Confirms What You Already Guessed." Qualitative confirmation of best-in-APS-C status; specific PDR number not published in the referenced article.

Panasonic RAW NR behavior: documented in camera community discussions on DPReview forums and Imaging Resource. Not independently tested by Astrian Light; verify current firmware behavior per model before citing.

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Related reading

• Best APS-C Cameras in 2026 — Sony a6700 and Fujifilm X-T5 in context of the full APS-C ranking
• Best Wildlife and Sports Cameras in 2026 — how the A9 III's DR penalty trades against its 120 fps
• Best Portrait Cameras in 2026 — how DR affects skin tone latitude in natural-light portrait work
• ISO Invariance: Which Cameras Benefit Most from Pushing Exposure — how the shape of the DR curve across ISO settings changes the practical meaning of base-ISO PDR
• Best Full-Frame Cameras in 2026 — broader full-frame coverage across use cases beyond DR

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Astrian Light is the photography vertical of Astrian, powered by NASA JPL DE441 astronomical data. We write technical, no-bullshit guides for photographers who plan their shots.