Canon EOS 1D Mark III Ek Fonksiyonlar - Sayfa 5

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C.Fn II-3: Highlight Tone Priority

II-3-0 — Disable

II-3-1 — Enable (special emphasis given to retaining detail in bright highlights)

Improves the gradation and detail within the highlight areas, without virtually no impact on mid-tones or shadows. A slight

increase in shadow noise is the only side effect. Far from an "exposure compensation", this setting changes how highlight data

is processed and can add up to a stop of dynamic range in bright areas. The 10 fps shooting speed, and burst rate, are unaffected.

ISO range runs from 200 through 3200 (regardless of whether it was previously expanded, via C.Fn I-3), and any zero digits the

ISO display are always in lower case if Highlight Tone Priority is engaged (ISO 2

C.Fn II-4: E-TTL II Flash Metering

II-4-0 — Evaluative flash metering

II-4-1 — Average flash metering (nearly entire picture area analyzed for flash)

By default, the E-TTL flash meter starts by using all 63 metering zones to determine where the subject is and its reflectivity, then bases

the flash exposure on those metering zones which receive reflection off the subject from the pre-flash — in other words, it concentrates

upon only those metering zones, and changes them on a shot-to-shot basis. Works especially well with subjects that take up little space

in the frame. However, foreground objects in the frame and some other conditions can occasionally throw off the Evaluative method.

For users who find the standard Evaluative system is not delivering consistent results, switching to Averaged E-TTL flash readings can

sometimes be the answer. Average flash metering takes a much broader, overall reading from all 63 metering zones for E-TTL flash.

C.Fn II-5: First- or 2nd-curtain flash sync with EOS speedlites

II-5-0 — 1st-curtain sync. (Flash fires at the beginning of a long exposure)

II-5-0 — 2nd-curtain sync. (Flash fires at the end of a long exposure)

This Custom Function is strictly for Canon EOS speedlites which do not have a sync switch on the flash unit, such as the now-discon-

tinued Speedlite 420EX or the previous ML-3 ring lite. When shooting with long shutter speeds, this function will fire the flash at the

end of the long exposure as opposed to the beginning. It's ideal for situations when shooting action with illumination at slow shutter

speeds, such as a car driving at nighttime, or kids running around with sparklers. This Custom Function has no effect on EOS Speed-

lites with their own sync switch, like the 580EX II, and likewise has no effect with non-dedicated studio strobes.

C.Fn II-6: Flash firing — yes or no

II-6-0 — Enable (attached speedlites will always fire if turned on)

II-6-1 — Disable (AF-assist beam on flash works, but flash won't fire)

Ideal for available light photography in low-light conditions, this function allows EOS EX-series Speedlites to continue to project

their AF-assist beam, but the flash won't fire. Program AE mode can continue to be used, and the camera will select slow shutter

speeds as if no speedlite was attached if C.Fn II-6-1 is active.

C.Fn II-7: Viewfinder information during high-speed sequences

II-7-0 — Disable

II-7-1 — Enable

By default, the camera's viewfinder display goes blank during continuous shooting. C.Fn II-7-1 allows the viewfinder

information display to remain on, even during a 10fps sequence. It's particularly useful for rapid burst shooting as the

exposure data does not disappear during a burst, and if necessary it is easier to make fast exposure adjustments and verify

that you've selected the desired setting.

EOS-1D Mark III Image / Flash / Display Custom Functions

instead of ISO 200).