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Dual Pixel CMOS AF Performance on the EOS RP
| Article ID: ART174841 |
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Date published: 07/09/2019 |
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Date last updated: 07/09/2019 |
Description
With Dual Pixel CMOS AF, the EOS RP provides several very useful AF features.
Solution
Dual Pixel CMOS AF for Fast and Accurate Auto Focus.
High-speed Focusing in Approx. 0.05 sec.***
The EOS RP camera's highly responsive Dual Pixel CMOS AF system features 4,779 manually selectable AF points** and can deliver sharp focus within approximately 0.05 seconds***. This means fast action can be captured and focus can be maintained with speed, accuracy and ease.
Test conditions:
- Brightness at time of distance measurement: EV12 (regular temperature, ISO 100)
- Shooting mode: M
- Lens in use: RF 24-105mm F4 L IS USM, with a focal distance of 24mm
- Live-view mode: On (with manual shutter button operation)
- AF mode: Live single-point AF (central)
- AF operation: One-shot AF
** Available AF points may decrease when shooting with AF cropping or in movie mode, or depending on camera settings or lens attached.
*** Based on the results of AF speed tests in accordance with CIPA guidelines. Results may vary depending on shooting conditions and lens in use. Relies on internal measurement method. |
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AF Area Coverage of Approx. 88% x 100%^
The EOS RP camera features an expansive focus area of approx. 88% horizontal and 100% vertical^ not only with RF lenses, but also when working with select EF lenses. With older EF lenses, or with Extender types I and II, the EOS RP focuses approx. 80% horizontally and 80% vertically. This means fast and impressive focusing even if your subject is way off center.
^ When shooting still photos. Actual coverage varies depending on the lens in use. |
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AF Points and AF Area
The EOS RP camera features a sophisticated AF system with a maximum of 4,779 manually selectable AF points**, which covers almost the entire image sensing area. The EOS RP can also be configured to focus on specific areas, using an extended range of selectable modes that include 1-point AF, Expand AF Area, Zone AF and Spot AF in addition to the conventional Face+ Tracking AF.
** Available AF points may decrease when shooting with AF cropping or in movie mode, or depending on camera settings or lens attached. |
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Excellent Low-light Performance
Amazing for nighttime photography or in very low light, the EOS RP camera's brilliant AF can operate in light as dim as a light rating of EV -5^ where other AF systems may fail or search. Phenomenal AF is achieved even when using lenses with high F numbers. This ultra-sensitive AF works in concert with the EOS RP's EVF to clearly capture subjects even when there's limited light.
^ When using RF 50mm F1.2 L USM, with central AF point. |
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f/11 Compatible in All AF Areas
The EOS RP camera's brilliant AF system doesn't just work with bright lenses. With the EOS RP, autofocus will operate over nearly the entire image area even when used with compatible f/11 lenses. For example, users can take ultra-telescopic 800mm shots using a compact EF 100-400mm f/4-5.6 IS II lens together with an EF 2x III extender, and AF will function properly over the entire field. When used with a III-type extender, the effective AF range is limited to an area roughly 88% x 100% of the total image frame, or 80% x 80% if combined with a I/II type extender. |
Variety of AF Modes including Eye Detection AF
The EOS RP camera's Face+ Tracking mode helps enhance reliability for tracking moving subjects. When the camera detects a human face, it uses the subject's eye as the AF point, choosing the eye closest to the camera by default. Photographers can also select which eye to focus on by touching the screen or using the camera's AF point selection button and cross keys. Eye Detection AF can also be used in conjunction with Servo AF and Movie AF modes. |
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Focus Peaking
Among the EOS RP camera's manual focus aids, Focus Peaking helps establish the focus area quickly and clearly. With manual focus peaking, the outline of the area in focus is indicated by a colored line. Focus Peaking is usable in conjunction with the EOS RP's Focus Guide feature, and can be customized with peaking color and detection level specifications that fit the project at hand.
^ When using RF 50mm F1.2 L USM, with central AF point. |
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