Canon 1D vs Pentax 645Z

The Canon EOS-1D and the Pentax 645Z are two professional cameras that were revealed to the public, respectively, in September 2001 and April 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-H (1D) and a medium format (645Z) sensor. The Canon has a resolution of 4.1 megapixels, whereas the Pentax provides 51.1 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications

Canon 1D		Pentax 645Z
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Pentax 645 mount lenses
4.1 MP – APS-H sensor		51.1 MP – Medium Format sensor
no Video		1080/60i Video
ISO 200-1,600 (100 - 3,200)		ISO 100-204,800
Optical viewfinder		Optical viewfinder
2.0" LCD – 120k dots		3.2" LCD – 1037k dots
Fixed screen (not touch-sensitive)		Tilting screen (no touchscreen)
8 shutter flaps per second		3 shutter flaps per second
Weathersealed body		Weathersealed body
500 shots per battery charge		650 shots per battery charge
156 x 158 x 80 mm, 1585 g		156 x 117 x 123 mm, 1550 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D and the Pentax 645Z? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

An illustration of the physical size and weight of the Canon 1D and the Pentax 645Z is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645Z is notably smaller (26 percent) than the Canon 1D. Moreover, the 645Z is slightly lighter (2 percent) than the 1D. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the 1D gets 500 shots out of its Canon NP-E3 battery, while the 645Z can take 650 images on a single charge of its Pentax D-LI90 power pack. As can be seen in the images above, the 1D has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Canon 1D	156 mm	158 mm	80 mm	1585 g	500	Y	Sep 2001	EUR 6 499	ebay.com
2.		Pentax 645Z	156 mm	117 mm	123 mm	1550 g	650	Y	Apr 2014	EUR 6 999	ebay.com
3.		Canon 1D Mark II	156 mm	158 mm	80 mm	1535 g	1200	Y	Jan 2004	EUR 4 499	ebay.com
4.		Canon 1D Mark II N	156 mm	158 mm	80 mm	1565 g	1200	Y	Aug 2005	EUR 4 199	ebay.com
5.		Canon 1Ds	156 mm	158 mm	80 mm	1265 g	600	Y	Sep 2002	EUR 8 999	ebay.com
6.		Canon 1Ds Mark III	150 mm	160 mm	80 mm	1385 g	1800	Y	Aug 2007	EUR 7 999	ebay.com
7.		Canon 1D C	158 mm	164 mm	83 mm	1545 g	1120	Y	Apr 2012	EUR 13 999	ebay.com
8.		Canon 1D X	158 mm	168 mm	83 mm	1551 g	1120	Y	Oct 2011	EUR 6 299	ebay.com
9.		Canon 1D X Mark II	158 mm	168 mm	83 mm	1530 g	1210	Y	Feb 2016	EUR 6 299	ebay.com
10.		Canon 1D X Mark III	158 mm	168 mm	83 mm	1440 g	2850	Y	Jan 2020	EUR 7 299	amazon.com
11.		Canon 5D Mark IV	151 mm	116 mm	76 mm	890 g	900	Y	Aug 2016	EUR 4 065	amazon.com
12.		Canon 5DS	152 mm	116 mm	76 mm	930 g	700	Y	Feb 2015	EUR 3 499	ebay.com
13.		Canon 5DS R	152 mm	116 mm	76 mm	930 g	700	Y	Feb 2015	EUR 3 699	ebay.com
14.		Hasselblad X1D	150 mm	98 mm	71 mm	725 g	..	Y	Jun 2016	EUR 9 399	ebay.com
15.		Leica SL	147 mm	104 mm	39 mm	847 g	400	Y	Oct 2015	EUR 6 899	ebay.com
16.		Pentax 645D	156 mm	117 mm	119 mm	1480 g	800	Y	Mar 2010	EUR 9 995	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 1D was launched at a somewhat lower price (by 24 percent) than the 645Z, which makes it more attractive for photographers on a tight budget. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 1D features an APS-H sensor and the Pentax 645Z a medium format sensor. The sensor area in the 645Z is 162 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 0.79. The sensor in the 1D has a native 3:2 aspect ratio, while the one in the 645Z offers a 4:3 aspect.

With 51.1MP, the 645Z offers a higher resolution than the 1D (4.1MP), but the 645Z has smaller individual pixels (pixel pitch of 5.30μm versus 11.56μm for the 1D). Yet, the 645Z is a much more recent model (by 12 years and 6 months) than the 1D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the 645Z has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax 645Z implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645Z for good quality output (200 dots per inch) amounts to 41.3 x 31 inches or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inches or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inches or 69.9 x 52.4 cm. The corresponding values for the Canon 1D are 12.5 x 8.3 inches or 31.7 x 21.1 cm for good quality, 10 x 6.6 inches or 25.4 x 16.9 cm for very good quality, and 8.3 x 5.5 inches or 21.1 x 14.1 cm for excellent quality prints.

The Canon EOS-1D has a native sensitivity range from ISO 200 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Pentax 645Z are ISO 100 to ISO 204800 (no boost).

In terms of underlying technology, the 1D is build around a CCD sensor, while the 645Z uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon 1D	APS-H	4.1	2496	1662	none	..	..	..	..
2.		Pentax 645Z	Medium Format	51.1	8256	6192	1080/60i	26.0	14.7	4505	101
3.		Canon 1D Mark II	APS-H	8.2	3504	2336	none	22.3	11.1	1003	66
4.		Canon 1D Mark II N	APS-H	8.2	3504	2336	none	22.3	11.2	975	66
5.		Canon 1Ds	Full Frame	11.0	4064	2704	none	21.8	11.0	954	63
6.		Canon 1Ds Mark III	Full Frame	21.0	5616	3744	none	24.0	12.0	1663	80
7.		Canon 1D C	Full Frame	17.9	5184	3456	4K/24p	24.3	13.0	2155	85
8.		Canon 1D X	Full Frame	17.9	5184	3456	1080/30p	23.8	11.8	2786	82
9.		Canon 1D X Mark II	Full Frame	20.0	5472	3648	4K/60p	24.1	13.5	3207	88
10.		Canon 1D X Mark III	Full Frame	20.0	5472	3648	4K/60p	24.2	14.5	3248	91
11.		Canon 5D Mark IV	Full Frame	30.1	6720	4480	4K/30p	24.8	13.6	2995	91
12.		Canon 5DS	Full Frame	50.3	8688	5792	1080/30p	24.7	12.4	2381	87
13.		Canon 5DS R	Full Frame	50.3	8688	5792	1080/30p	24.6	12.4	2308	86
14.		Hasselblad X1D	Medium Format	51.3	8272	6200	1080/25p	26.2	14.8	4489	102
15.		Leica SL	Full Frame	24.0	6000	4000	4K/30p	25.0	13.4	1821	88
16.		Pentax 645D	Medium Format	39.5	7264	5440	none	24.6	12.6	1262	82
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but can also record movies. The 645Z indeed provides for movie recording, while the 1D does not. The highest resolution format that the 645Z can use is 1080/60i.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 1D and the 645Z are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the 1D offers a wider field of view (100%) than the one in the 645Z (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645Z has a higher magnification (0.78x vs 0.55x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon 1D and Pentax 645Z along with similar information for a selection of comparators.

Core Features

		Camera Model	Viewfinder (Type or 000 dots)	Control Panel (yes/no)	LCD Specifications (inch/000 dots)	LCD Attach- ment	Touch Screen (yes/no)	Max Shutter Speed *	Max Shutter Flaps *	Built-in Flash (yes/no)	Built-in Image Stab
1.		Canon 1D	optical	Y	2.0 / 120	fixed	n	1/16000s	8.0/s	n	n
2.		Pentax 645Z	optical	Y	3.2 / 1037	tilting	n	1/4000s	3.0/s	n	n
3.		Canon 1D Mark II	optical	Y	2.0 / 230	fixed	n	1/8000s	8.3/s	n	n
4.		Canon 1D Mark II N	optical	Y	2.5 / 230	fixed	n	1/8000s	8.5/s	n	n
5.		Canon 1Ds	optical	Y	2.0 / 120	fixed	n	1/8000s	3.0/s	n	n
6.		Canon 1Ds Mark III	optical	Y	3.0 / 230	fixed	n	1/8000s	5.0/s	n	n
7.		Canon 1D C	optical	Y	3.2 / 1040	fixed	n	1/8000s	14.0/s	n	n
8.		Canon 1D X	optical	Y	3.2 / 1040	fixed	n	1/8000s	14.0/s	n	n
9.		Canon 1D X Mark II	optical	Y	3.2 / 1620	fixed	Y	1/8000s	16.0/s	n	n
10.		Canon 1D X Mark III	optical	Y	3.2 / 2100	fixed	Y	1/8000s	20.0/s	n	n
11.		Canon 5D Mark IV	optical	Y	3.2 / 1620	fixed	Y	1/8000s	7.0/s	n	n
12.		Canon 5DS	optical	Y	3.2 / 1040	fixed	n	1/8000s	5.0/s	n	n
13.		Canon 5DS R	optical	Y	3.2 / 1040	fixed	n	1/8000s	5.0/s	n	n
14.		Hasselblad X1D	2360	n	3.0 / 920	fixed	Y	1/2000s	2.3/s	n	n
15.		Leica SL	4400	Y	3.0 / 1040	fixed	Y	1/8000s	11.0/s	n	n
16.		Pentax 645D	optical	Y	3.0 / 921	fixed	n	1/4000s	1.1/s	n	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The Pentax 645Z has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The 1D writes its imaging data to Compact Flash cards, while the 645Z uses SDXC cards. The 645Z features dual card slots, which can be very useful in case a memory card fails. In contrast, the 1D only has one slot.

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon EOS-1D and Pentax 645Z and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections

		Camera Model	Hotshoe Port	Internal Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Canon 1D	Y	- / -	-	-	-	FW	-	-	-
2.		Pentax 645Z	Y	stereo / mono	Y	-	mini	3.0	-	-	-
3.		Canon 1D Mark II	Y	- / -	-	-	-	1.1	-	-	-
4.		Canon 1D Mark II N	Y	- / -	-	-	-	1.1	-	-	-
5.		Canon 1Ds	Y	- / -	-	-	-	FW	-	-	-
6.		Canon 1Ds Mark III	Y	mono / -	-	-	-	2.0	-	-	-
7.		Canon 1D C	Y	mono / mono	Y	Y	mini	2.0	-	-	-
8.		Canon 1D X	Y	mono / -	Y	-	mini	2.0	-	-	-
9.		Canon 1D X Mark II	Y	mono / mono	Y	Y	mini	3.0	-	-	-
10.		Canon 1D X Mark III	Y	mono / mono	Y	Y	mini	3.1	Y	-	Y
11.		Canon 5D Mark IV	Y	mono / mono	Y	Y	mini	3.0	Y	Y	-
12.		Canon 5DS	Y	mono / mono	Y	-	mini	3.0	-	-	-
13.		Canon 5DS R	Y	mono / mono	Y	-	mini	3.0	-	-	-
14.		Hasselblad X1D	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
15.		Leica SL	Y	stereo / mono	Y	Y	full	3.0	Y	-	-
16.		Pentax 645D	Y	stereo / -	-	-	-	2.0	-	-	-

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Both the 1D and the 645Z have been discontinued, but can regularly be found used on ebay. The 1D was replaced by the Canon 1D Mark II, while the 645Z does not have a direct successor. Further information on the features and operation of the 1D and 645Z can be found, respectively, in the Canon 1D Manual (free pdf) or the online Pentax 645Z Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Canon 1D or the Pentax 645Z – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Canon EOS-1D:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
• Faster shutter: Has higher mechanical shutter speed (1/16000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (8 vs 3 flaps/sec) to capture the decisive moment.
• More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
• More affordable: Was introduced into a lower priced segment (24 percent cheaper at launch).
• More heavily discounted: Has been available for much longer (launched in September 2001).

Arguments in favor of the Pentax 645Z:

• More detail: Has more megapixels (51.1 vs 4.1MP), which boosts linear resolution by 244%.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better image quality: Is equipped with a larger and more technologically advanced sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Broader imaging potential: Can capture not only stills but also 1080/60i video.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.55x).
• Larger screen: Has a bigger rear LCD (3.2" vs 2.0") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (1037k vs 120k dots).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More compact: Is smaller (156x117mm vs 156x158mm) and will fit more readily into a bag.
• Longer lasting: Gets more shots (650 versus 500) out of a single battery charge.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• More modern: Reflects 12 years and 6 months of technical progress since the 1D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the 645Z is the clear winner of the contest (16 : 7 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

How about other alternatives? Do the specifications of the Canon 1D and the Pentax 645Z place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the 1D or the 645Z perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price	Street Price
1.		Canon 1D	..	..	..	+ +	..	..	Sep 2001	EUR 6 499	ebay.com
2.		Pentax 645Z	5/5	..	3.5/5	..	4.5/5	5/5	Apr 2014	EUR 6 999	ebay.com
3.		Canon 1D Mark II	..	..	..	+ +	..	..	Jan 2004	EUR 4 499	ebay.com
4.		Canon 1D Mark II N	..	..	..	..	..	..	Aug 2005	EUR 4 199	ebay.com
5.		Canon 1Ds	..	..	..	+ +	..	..	Sep 2002	EUR 8 999	ebay.com
6.		Canon 1Ds Mark III	..	..	..	+ +	4.5/5	..	Aug 2007	EUR 7 999	ebay.com
7.		Canon 1D C	..	..	..	..	..	..	Apr 2012	EUR 13 999	ebay.com
8.		Canon 1D X	5/5	..	..	..	4.5/5	4.5/5	Oct 2011	EUR 6 299	ebay.com
9.		Canon 1D X Mark II	..	..	4.5/5	89/100	4.5/5	4.5/5	Feb 2016	EUR 6 299	ebay.com
10.		Canon 1D X Mark III	..	+ +	5/5	..	4.5/5	4/5	Jan 2020	EUR 7 299	amazon.com
11.		Canon 5D Mark IV	4.5/5	+ +	4/5	87/100	4.5/5	4.5/5	Aug 2016	EUR 4 065	amazon.com
12.		Canon 5DS	..	+	..	83/100	4.5/5	4.5/5	Feb 2015	EUR 3 499	ebay.com
13.		Canon 5DS R	5/5	+	..	83/100	5/5	4.5/5	Feb 2015	EUR 3 699	ebay.com
14.		Hasselblad X1D	..	o	..	81/100	..	4/5	Jun 2016	EUR 9 399	ebay.com
15.		Leica SL	4/5	..	4/5	84/100	4.5/5	4/5	Oct 2015	EUR 6 899	ebay.com
16.		Pentax 645D	5/5	..	..	..	..	..	Mar 2010	EUR 9 995	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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