Custom Image function
broadens the scope of visual expression,
with eight finishing touches

The 645D’s Custom Image function features eight distinctive finishing touches, each of which automatically adjusts saturation, hue, key, contrast, sharpness (fine sharpness selectable) and other parameters to preprogrammed levels. All parameters can be adjusted manually to the desired levels for the visual effects you want to achieve.*

Reversal Film mode for a dramatic finishing touch
The 645D offers a new Reversal Film finishing touch, which automatically enhances contrast to create striking images. By combining this mode with the dodging function of the PENTAX Digital Camera Utility software (included), you can easily produce images closely resembling those made with reversal film, and print them using your home printer.

* Saturation and hue can be manually adjusted in all finishing touch modes, except for Monotone. Only contrast can be manually adjusted in the Reversal Film mode./p>

In-body RAW-data development assures effortless,
computer-free image editing and printing

The 645D not only develops RAW-data files within its body, but it can also store them as new JPEG files. You can even adjust or switch various image-processing modes and functions, including white-balance control and Custom Image modes, during development. Thanks to this user-friendly feature, you can swiftly and effortlessly process recorded images into high-level artistic works, then play them back or print them as necessary, without requiring a computer.

Dynamic-range expansion (highlight/shadow compensation)
produces fined-detailed, gradation-rich images

The 645D allows you to expand the dynamic range toward either the highlight (high-illumination) or shadow (low-illumination) side, helping you to efficiently minimize washed-out and pitch-black areas. Unlike the exposure compensation function, this function expands the reproducible gradation range itself. So, even when you expand the dynamic range toward the highlight side,** for instance, the image’s shadow areas are unaffected. As a result, you can produce striking, lively artworks with a superb sense of plasticity.

** When the dynamic range is expanded for highlights, the lowest-available sensitivity is ISO 400 (or ISO 200 in combination with the sensitivity expansion function).

A choice of 10 white-balance modes
accommodates different light sources
and specific visual expressions

The 645D offers 10 preset modes for white-balance control: Auto, Daylight, Shade, Cloudy, Fluorescent light (with four variations), Incandescent light, Flash, CTE, Manual (with a white-balance reading measured from the image) and Color temperature (with direct input). The CTE mode*** is programmed to work in the exact opposite way to the Auto mode and emphasize a primary color of a specific light source. This mode is effective in highlighting the sun’s glow at dawn and dusk, or preventing the fading of light colors, such as pink tints of cherry blossoms.

*** The CTE is not programmed to compensate artificial light sources.

Dual-slot design for SD/SDHC memory cards
enhances the efficiency and versatility of image data storage

The 645D offers a choice of RAW or JPEG data recording formats, or you can choose to simultaneously record the image in both formats. With one push of the RAW button, you can instantly switch the recording mode from one to the other. Since the 645D offers a pair of memory-card slots (SD1 and SD2) which can accept two SD and/or SDHC memory cards, you can even assign a different recording format or function to each slot using the direct button. For instant, one card can be used as the back-up of the other; recorded images can be assigned to different cards according to the recording format; or, using the Reserve mode, the second card can be programmed to automatically start accepting data when the first reaches its storage capacity.

Note: For safe storage of image data, SD/SDHC memory cards of Class 6 or later are recommend for use with the 645D.

Distortion and lateral chromatic aberration compensation functions
assure high-quality images without distortions and color shifts

The 645D’s lens characteristic compensation functions**** effectively compensate for the barrel- and spool-type distortions common to wide-angle and zoom lenses, as well as for the lateral chromatic aberration that causes slight color shifts along the subject’s outline. By effectively compensating optical characteristics for specific lenses on the camera side, the 645D makes images appear sharper and crisper.

**** These functions are available only with D FA 645- and FA 645-series lenses.

Other image-processing features

• · Extended-exposure noise-reduction function

• · High-sensitivity noise-reduction function:

  The extent of noise reduction and the ISO sensitivity threshold can be set by the user.