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Pentax 645D PDF User Manual

Did you lose or misplace the instruction manual that came with your Pentax 645D? It happens all too easily, but fortunately Pentax makes a soft copy available that you can browse through online, print out, or download (see the pdf file below). It is certainly good practice to carefully familiarize oneself with the many different functionalities and options that the 645D offers, and the official user manual is without doubt an authoritative and comprehensive source of respective information.

That said, the instruction booklet can be a dry read, so that a dedicated camera guide book from a professional photographer that illustrates the camera's core functions in a real life photography context can be a very helpful complement. Yes, getting one of these camera guides (see here at amazon) would involve an additional expense, but if that book helps to exploit the camera's potential to the full, the (small) additional investment may well be worth it.

Also, you might want to check out the video tutorial on the Pentax 645D below.

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In any case, the 645D is an advanced imaging tool, whose many features merit serious attention. This DSLR (Digital Single Lens Reflex) camera was announced on March 10th, 2010, which means that, as of today, the camera is 4590 days old (young?). The camera has meanwhile been discontinued and was succeeded by the Pentax 645Z as a replacement in the same line of cameras.

Pentax's operating manual for the 645D

The camera's operating manual is 108 pages long. The pdf version is embedded below. As you browse through, you will hopefully find the information you are looking for. You can also print out a hard copy by right clicking on the manual and then choosing the respective menu option. For convenience, a summary of the key specs of the 645D is included towards the bottom of this webpage.

Don't forget to bookmark this page for future reference (Ctrl-Shift-D on a Windows PC; Cmd-Shift-D on a Mac). Happy browsing!

Click on the button below to download the pdf version of the Pentax 645D manual to your computer. The file will open in a new browser window.

Download the Manual

If you prefer to read the user guide in another language, please check the respective availability on Pentax's support site. That site also provides complementary online resources, such as information on the compatibility of various camera accessories or the availability of firmware updates that are not necessarily comprehensively covered in the instruction manual.

Printed, hardcopy versions of the Pentax 645D manual can sometimes be found online. You can check the availability on amazon and ebay via the buttons below.

amazon.com ebay.com

Video tutorial for the Pentax 645D

Perhaps instead of reading through a manual or operations guide, you might prefer to better familiarize yourself with your 645D by watching a video tutorial. It can notably help to quickly get to know the key functions and to set up your camera according to your particular preferences and needs.

Once again, the Pentax 645D is a sophisticated imaging tool and not exploiting its capabilities to the full would be a pity. Hence, taking the time to study online information material or to read through a well-written camera guide book is highly recommended to make the most of your purchase.

Find 645D guide book at
amazon.com

Pentax 645D FAQ

Below are some additional questions and answers concerning some particular features of the 645D.

What is the technology behind the imaging sensor in the 645D?

The camera has a CCD (Charged Coupled Device) sensor at its core.

Which image processing chip is used to convert the raw signal into an image file and perform noise reduction and image sharpening?

Pentax equipped the 645D with the PRIME II image processor.

What is the ISO sensitivity range of the 645D?

The camera has a native sensitivity range from ISO 100 to ISO 1600.

What is the life expectancy of the shutter in the Pentax 645D?

Pentax mentions a shutter rating of 50 000 actuations for the 645D. This number represents a Mean Time before Failure, that is an average value. The shutter might fail earlier, or it might last longer. Anyway, in order to exhaust the expected shutter life of the 645D over, say, three years, one would have to take about 50 pictures each and every day.

How do I find the shutter count on my 645D?

Pentax embeds the number of shutter actuations in image metadata. You can check the number of shots that your 645D has taken up to now by uploading a recent image to the free online shutter count finder app.

Do I need to purchase an external camera trigger to shoot time-lapse sequences?

No, the Pentax 645D has an intervalometer built-in, so that low frequency shooting (for example, flower blooming, sunset, moon rise) can be undertaken without the need to purchase a separate external intervalometer and related software.

What is the fastest shutter speed that can be used with flash?

The 645D's flash sync speed is 1/125 sec.

Which battery does the 645D use?

The camera gets its power from the D-LI90 (here at amazon), which is a rechargeable Lithium-Ion power pack.

Further reading

How does the 645D stack up against available alternatives? If you would like to see a side-by-side review with another camera, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Core camera specifications

    Here is a list of the main features and technical characteristics of the Pentax 645D.

    Specifications Summary
    Camera Model Pentax 645D
    Camera Type Digital single lens reflex
    Camera Lens Pentax 645 mount lenses
    Launch Date March 2010
    Launch Price USD 9 995
    Sensor Specs
    Sensor Technology CCD
    Sensor Format Medium Format Sensor
    Sensor Size 44.0 x 33.0 mm
    Sensor Area 1 452 mm2
    Sensor Diagonal 55 mm
    Crop Factor 0.79x
    Sensor Resolution 39.5 Megapixels
    Image Resolution 7 264 x 5 440 pixels
    Pixel Pitch 6.06 μm
    Pixel Density 2.72 MP/cm2
    Moiré control no AA filter
    Movie Capability no Video
    ISO Setting 100 - 1 600 ISO
    Image Processor PRIME II
    DXO Sensor Quality (score) 82
    DXO Color Depth (bits) 24.6
    DXO Dynamic Range (EV) 12.6
    DXO Low Light (ISO) 1262
    Screen Specs
    Viewfinder Type Optical viewfinder
    Viewfinder Field of View 98%
    Viewfinder Magnification 0.78x
    Top-Level Screen Control Panel
    LCD Size 3.0 inch
    LCD Resolution 921k dots
    LCD Attachment Fixed screen
    Touch Input No touchscreen
    Shooting Specs
    Focus System Phase-detect AF
    Manual Focusing Aidno Peaking Feature
    Maximum Shutter Speed 1/4000s
    Continuous Shooting 1.1 shutter flaps/s
    Shutter Life Expectancy50 000 actuations
    Silent Shootingno E-Shutter
    Time Lapse PhotographyIntervalometer Built-in
    Fill Flash no On-Board Flash
    Storage Medium SDXC cards
    Single or Dual Card Slots Dual card slots
    UHS card support no
    Connectivity Specs
    External Flash Hotshoe
    Studio Flash PC Sync socket
    USB Connector USB 2.0
    HDMI Port no HDMI
    Wifi Support no Wifi
    Body Specs
    Environmental SealingWeathersealed body
    Battery Type D-LI90 power pack
    Battery Life (CIPA)800 shots per charge
    Body Dimensions 156 x 117 x 119 mm
    (6.1 x 4.6 x 4.7 in)
    Camera Weight 1 480 g (52.2 oz)

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