Canon EOS 40D
Response
- red (R)
- green (G)
- blue (B)
Astro mode
Emission-line overlay on the active single-profile plot. Values are the source's own native samples (or a labelled linear interpolation).
About this spectrum4 notes
- Warning: Response scope is unknown; do not interpret this response as a bare-sensor measurement. Dataset interpretation
- Warning: Physical configuration is not documented; the response cannot be assigned to a confirmed optical configuration. Dataset interpretation
- Warning: Normalization is unknown; amplitude comparisons are not established. Dataset interpretation
- Warning: Uncertainty is not documented. Missing uncertainty does not mean zero uncertainty. Dataset interpretation
Source & details
- Source category: measured
- Primary measurement: a direct laboratory observation (or community submission recorded as measured). Not a mirror, not an estimation.
- Type: measured
- Measured response; measurement alone does not establish quality or confidence.
- Origin: Community
- Community provenance; origin does not establish measurement type, quality or confidence.
- Quality: unassessed
- Quality has not been assessed; no grade is inferred. Canonical release: no per-leaf scientific-quality assessment is asserted; the source-side claim is preserved verbatim.
- Confidence: unassessed
- Confidence has not been assessed; no confidence level is inferred. Canonical release: no claim about the per-leaf measurement precision is asserted; the upstream 'as is' wording (where present) is preserved.
- Author
- Jun Jiang
- Source
- Jiang et al. WACV 2013 camera spectral sensitivity database (link)
- Source category
measured(primary measurement; not a mirror or estimation)- As-is
- Samples rendered verbatim: no smoothing, no interpolation, no zero-padding, no gap bridging in the browser. Documented null sparse cells render as visible gaps.
- Optical configuration
cfg-prf-jiang-intake-canon-40d(unknown) — unknown- Normalisation
- unknown (original: unknown)
- Response unit / scale
unknown/unknown- Sample count
- 33 samples from 400–720 nm, Δ 10 nm
- Profile ID
prf-jiang-intake-canon-40d@1- Profile checksum
sha256:9fbc93fb74b277db…- Processing
- source_column=database:Canon 40D
- Scientific notes
- Canonical release: native grid and native R/G/B samples are preserved verbatim; sparse cells (wavelengths absent in the upstream CSV / JSON) are preserved as null; the parser never invents a value.
- Citation
- Jiang et al. WACV 2013 camera spectral sensitivity database
- Known limitations
- source_category=measured
- permission_status is 'unknown' on the canonical License record (no independent operational clearance granted).
Compare measurements
Overlay up to 4 measurements on the same chart. Each path uses its native grid; no interpolation, no averaging, no merge.
Graph tools
Inspect, zoom, export, and share the current chart. Native samples only — no interpolation, no averaging.
Channels
Zoom (nm)
Camera specifications
- Sensor type
- CMOS
- Sensor format
- APS-C
- Sensor size
- 22.2 x 14.8 mm
- Effective megapixels
- 10.1 MP
- Resolution
- 3888 × 2592 px
- Lens mount
- Canon EF-S
- Release year
- 2007
Specification sources
Body specifications drawn from cited reference sources, distinct from the measured spectral response curves below.
Source: Wikipedia infobox MediaWiki revision 1365347568 (CC BY-SA 4.0)
Also known as: Canon 40D.
Data details
- Dataset version
recovered-2026-10-01-siril-source-review-v2- Manifest digest
6493790d2d6b6b68…- Manifest schema
0.1.0-draft- Release kind
full- Linked profiles / sessions
- 5 profile revisions
Raw samples (R/G/B at native wavelengths)
prf-jiang-intake-canon-40d(revision 1)Raw samples for prf-jiang-intake-canon-40d (revision 1): R/G/B response at native wavelengths. λ (nm) R G B 400 0.00061338 0.0022326 0.0095762 410 0.00054295 0.0025282 0.019397 420 0.0017657 0.015147 0.20048 430 0.0025753 0.039169 0.63618 440 0.0019556 0.05659 0.74402 450 0.0020464 0.070041 0.8273 460 0.0025927 0.086096 0.89143 470 0.0046451 0.18752 0.86181 480 0.0096604 0.44622 0.84141 490 0.013702 0.63039 0.72815 500 0.02004 0.76014 0.55543 510 0.03468 0.93533 0.42602 520 0.058077 0.91804 0.23653 530 0.1147 1 0.14648 540 0.12768 0.86269 0.089427 550 0.11141 0.86491 0.065516 560 0.1335 0.7561 0.040818 570 0.24922 0.67191 0.031477 580 0.37219 0.52369 0.025019 590 0.50684 0.4122 0.020957 600 0.51487 0.24592 0.01404 610 0.49491 0.12807 0.0093475 620 0.39493 0.05879 0.0060651 630 0.36069 0.037918 0.0057769 640 0.28328 0.024125 0.0054316 650 0.23648 0.016853 0.0060976 660 0.17385 0.011789 0.0059716 670 0.13989 0.012027 0.0060196 680 0.093123 0.011431 0.004393 690 0.027774 0.0048331 0.0014347 700 0.0050271 0.00118 0.00028048 710 0.0012686 0.00036413 0.000089175 720 0.0005405 0.00015703 0.000052324 prf-sobotka-ref-canon40d-6e214a565214(revision 1)Raw samples for prf-sobotka-ref-canon40d-6e214a565214 (revision 1): R/G/B response at native wavelengths. λ (nm) R G B 400 0.0006133779423414272 0.0022326205682479277 0.009576227362007191 410 0.0005429472292104337 0.002528214031104809 0.019397177582992177 420 0.001765662044506702 0.015146705363374043 0.20047714380319448 430 0.002575250477716493 0.03916860566885477 0.6361796793248726 440 0.001955626524705614 0.056589774546508424 0.7440152919148112 450 0.002046413537420308 0.07004053318566497 0.8273046197936168 460 0.002592741491566308 0.08609556607290483 0.8914310665217605 470 0.004645089110444148 0.18751746352467358 0.8618123691609061 480 0.009660447272135749 0.4462178618771706 0.8414055975214944 490 0.013701710300363627 0.6303864464994008 0.7281533134433448 500 0.020039903419055587 0.7601355568618643 0.5554309788206052 510 0.03467957078833829 0.9353347153022734 0.4260247817529834 520 0.05807712793810852 0.9180443414061156 0.23652785833004789 530 0.11470294343745793 1 0.1464820168900384 540 0.12767596723790803 0.8626945802439849 0.08942698563131013 550 0.11140845027323647 0.8649076874206545 0.06551627843938267 560 0.13350175248057936 0.7560991028907853 0.04081775220760199 570 0.24922267485196364 0.6719139564823604 0.03147668613069558 580 0.37218812543925744 0.5236947425198573 0.025018605958953357 590 0.5068399622452711 0.41220011943021734 0.02095703100734731 600 0.5148742979828566 0.2459161000628472 0.014039823376232214 610 0.4949063205560937 0.12806565069532727 0.009347510786464685 620 0.3949330534021234 0.058789723089143646 0.00606511684484621 630 0.3606873831191502 0.037917634967325704 0.005776942824572368 640 0.28327815123720773 0.024124902348923137 0.005431612193386576 650 0.23648125265889827 0.016853245694082843 0.006097615332549488 660 0.17385242709482696 0.011789391971452616 0.005971645022683906 670 0.13988905355880057 0.012026568104544126 0.006019589488188461 680 0.09312325008207997 0.01143069329840675 0.004392952355398183 690 0.0277736428031862 0.004833094421924302 0.0014347200080492418 700 0.005027083412015207 0.001179957084675058 0.0002804810089198804 710 0.0012685663299334517 0.00036412500049208513 0.0000891747638583074 720 0.000540504157901097 0.00015702992562909487 0.00005232434529385382 prf-solomatov-gt-canon-40d-jiang-et-al-2013-cfb1fbb9e2d9(revision 1)Raw samples for prf-solomatov-gt-canon-40d-jiang-et-al-2013-cfb1fbb9e2d9 (revision 1): R/G/B response at native wavelengths. λ (nm) R G B 400 0.00061338 0.0022326 0.0095762 410 0.00054295 0.0025282 0.019397 420 0.0017657 0.015147 0.20048 430 0.0025753 0.039169 0.63618 440 0.0019556 0.05659 0.74402 450 0.0020464 0.070041 0.8273 460 0.0025927 0.086096 0.89143 470 0.0046451 0.18752 0.86181 480 0.0096604 0.44622 0.84141 490 0.013702 0.63039 0.72815 500 0.02004 0.76014 0.55543 510 0.03468 0.93533 0.42602 520 0.058077 0.91804 0.23653 530 0.1147 1 0.14648 540 0.12768 0.86269 0.089427 550 0.11141 0.86491 0.065516 560 0.1335 0.7561 0.040818 570 0.24922 0.67191 0.031477 580 0.37219 0.52369 0.025019 590 0.50684 0.4122 0.020957 600 0.51487 0.24592 0.01404 610 0.49491 0.12807 0.0093475 620 0.39493 0.05879 0.0060651 630 0.36069 0.037918 0.0057769 640 0.28328 0.024125 0.0054316 650 0.23648 0.016853 0.0060976 660 0.17385 0.011789 0.0059716 670 0.13989 0.012027 0.0060196 680 0.093123 0.011431 0.004393 690 0.027774 0.0048331 0.0014347 700 0.0050271 0.00118 0.00028048 prf-solomatov-gt-canon-40d-mauer-2009-d62eeec30f90(revision 1)Raw samples for prf-solomatov-gt-canon-40d-mauer-2009-d62eeec30f90 (revision 1): R/G/B response at native wavelengths. λ (nm) R G B 400 0 0 0.01 410 0 0.01 0.09 420 0 0.03 0.42 430 0 0.05 0.65 440 0 0.08 0.87 450 0 0.09 0.96 460 0 0.13 1.01 470 0.01 0.29 0.97 480 0.01 0.54 0.9 490 0.01 0.7 0.81 500 0.02 0.94 0.61 510 0.04 1.01 0.43 520 0.08 1.08 0.25 530 0.14 1.06 0.14 540 0.15 1.01 0.1 550 0.14 1 0.07 560 0.17 0.87 0.05 570 0.3 0.75 0.04 580 0.45 0.58 0.03 590 0.53 0.42 0.02 600 0.56 0.24 0.01 610 0.53 0.15 0.01 620 0.46 0.08 0.01 630 0.38 0.05 0.01 640 0.33 0.03 0.01 650 0.23 0.02 0.01 660 0.19 0.02 0.01 670 0.15 0.02 0.01 680 0.1 0.01 0 690 0.03 0.01 0 700 0 0 0 prf-solomatov-pred-canon-eos-40d-a45ac3cc23aa(revision 1)Raw samples for prf-solomatov-pred-canon-eos-40d-a45ac3cc23aa (revision 1): R/G/B response at native wavelengths. λ (nm) R G B 400 0.0014918773 0.004184163 0.012154842 410 0.0030119505 0.006240582 0.03155113 420 0.005021183 0.011775018 0.07613239 430 0.0030641814 0.020255936 0.12895143 440 0.007253695 0.02545381 0.16970299 450 0.008226474 0.02873822 0.20173568 460 0.008175334 0.041078158 0.22470984 470 0.00672544 0.069672085 0.23121752 480 0.00611988 0.10425757 0.22189975 490 0.006327943 0.14220075 0.18754582 500 0.0072208517 0.18859726 0.14118917 510 0.010870559 0.24166211 0.09418505 520 0.017331684 0.27677852 0.05536151 530 0.022510303 0.2887756 0.029505812 540 0.024407463 0.28076178 0.021237636 550 0.028945755 0.2594596 0.015919184 560 0.038470775 0.22765169 0.014644136 570 0.06874581 0.18425414 0.012608638 580 0.118484184 0.13447623 0.009557317 590 0.15284784 0.088276684 0.0051606363 600 0.14961994 0.05278466 0.00017586618 610 0.13745798 0.02868456 0.00022152053 620 0.11881358 0.017366264 0.000073793104 630 0.10239312 0.009779293 0.00014490302 640 0.08523731 0.0034681165 0.0001761028 650 0.06952141 0.00016771116 0.000056034056 660 0.05319156 5.395024e-7 0.00009734646 670 0.036830798 9.4923917e-7 0.0003004175 680 0.021913204 0.00012982116 0.00034436747 690 0.009024015 0.00012611959 0.00015000424 700 0.0057816333 0.000105871295 0.0003985427