Canon 1Ds versus Pentax K-3 II

The Canon EOS-1Ds and the Pentax K-3 II are two digital cameras that were announced, respectively, in September 2002 and April 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (1Ds) and an APS-C (K-3 II) sensor. The Canon has a resolution of 11 megapixel, whereas the Pentax provides 24.1 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 1Ds vs Pentax K-3 II

The physical size and weight of the Canon 1Ds and the Pentax K-3 II are illustrated 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 you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left side – the 1Ds – represents the basis for the calculations across all the size and weight measures).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 II is considerably smaller (47 percent) than the Canon 1Ds. Moreover, the K-3 II is substantially lighter (37 percent) than the 1Ds. 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 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 1Ds gets 600 shots out of its NP-E3 battery, while the K-3 II can take 720 images on a single charge of its D-LI90 power pack. As can be seen in the images above, the 1Ds has a battery grip build in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the K-3 II, Pentax provides the D-BG5 vertical grip as an optional accessory (see here on eBay).

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications

	Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life (CIPA)	Weather Sealing (yes/no)	Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Canon 1Ds»	6.1 in	6.2 in	3.1 in	44.6 oz	600	Y	Sep 2002	8,999	-		Canon 1Ds
	Pentax K-3 II«	5.2 in	3.9 in	3.0 in	28.2 oz	720	Y	Apr 2015	1,099			Pentax K-3 II
	Canon 1D X Mark II« »	6.2 in	6.6 in	3.3 in	54.0 oz	1210	Y	Feb 2016	5,999			Canon 1D X Mark II
	Canon 80D« »	5.5 in	4.1 in	3.1 in	25.8 oz	960	Y	Feb 2016	1,199			Canon 80D
	Canon 1D C« »	6.2 in	6.5 in	3.3 in	54.5 oz	1120	Y	Apr 2012	14,999	-		Canon 1D C
	Canon 1D Mark IV« »	6.1 in	6.2 in	3.1 in	43.4 oz	1500	Y	Oct 2009	4,999	-		Canon 1D Mark IV
	Canon 1D Mark III« »	6.1 in	6.2 in	3.1 in	40.7 oz	2200	Y	Feb 2007	4,499	-		Canon 1D Mark III
	Canon 1Ds Mark III« »	5.9 in	6.3 in	3.1 in	48.9 oz	1800	Y	Aug 2007	7,999	-		Canon 1Ds Mark III
	Canon 1D Mark II N« »	6.1 in	6.2 in	3.1 in	55.2 oz	1200	Y	Aug 2005	3,999	-		Canon 1D Mark II N
	Canon 5D« »	6.0 in	4.4 in	3.0 in	31.6 oz	400	Y	Aug 2005	3,299	-		Canon 5D
	Canon 1D Mark II« »	6.1 in	6.2 in	3.1 in	54.1 oz	1200	Y	Jan 2004	4,499	-		Canon 1D Mark II
	Canon 1Ds Mark II« »	6.1 in	6.2 in	3.1 in	42.9 oz	1200	Y	Sep 2004	7,999	-		Canon 1Ds Mark II
	Nikon D2Xs« »	6.2 in	5.9 in	3.4 in	44.2 oz	3800	Y	Jun 2006	4,699	-		Nikon D2Xs
	Pentax KP« »	5.2 in	4.0 in	3.0 in	24.8 oz	390	Y	Jan 2017	1,099			Pentax KP
	Pentax K-70« »	5.0 in	3.7 in	2.9 in	24.3 oz	410	Y	Jun 2016	649			Pentax K-70
	Pentax K-3« »	5.2 in	3.9 in	3.0 in	28.2 oz	560	Y	Oct 2013	1,299	-		Pentax K-3
	Pentax K-5« »	5.2 in	3.8 in	2.9 in	26.8 oz	740	Y	Sep 2010	1,099	-		Pentax K-5
Convert to Metric

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The K-3 II was launched at a markedly lower price (by 88 percent) than the 1Ds, which puts it into a different market segment. 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: Canon 1Ds vs Pentax K-3 II

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 tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 1Ds features a full frame sensor and the Pentax K-3 II an APS-C sensor. The sensor area in the K-3 II is 57 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Despite having a smaller sensor, the K-3 II offers a higher resolution of 24.1 megapixel, compared with 11 MP of the 1Ds. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.90μm versus 8.83μm for the 1Ds). However, it should be noted that the K-3 II is much more recent (by 12 years and 7 months) than the 1Ds, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the K-3 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

Unlike the 1Ds, the K-3 II has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

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"). Of the two cameras under consideration, the K-3 II offers substantially better image quality than the 1Ds (overall score 17 points higher). The advantage is based on 1.8 bits higher color depth, 2.6 EV in additional dynamic range, and 0.2 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Many modern cameras cannot only take still pictures, but also record videos. The K-3 II indeed provides for movie recording, while the 1Ds does not. The highest resolution format that the K-3 II can use is 1080/60i.

Feature comparison: Canon 1Ds vs Pentax K-3 II

Apart from body and sensor, cameras can and do differ across a variety of features. The 1Ds and the K-3 II 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 following table reports on some other key feature differences and similarities of the Canon 1Ds, the Pentax K-3 II, and comparable cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

One feature that differentiates the K-3 II and the 1Ds is in-body image stabilization (IBIS). The K-3 II reduces the risk of handshake-induced blur with all attached lenses, while the 1Ds has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

The 1Ds writes its imaging data to Compact Flash cards, while the K-3 II uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

The K-3 II is a recent model that features in the current product line-up of Pentax. In contrast, the 1Ds has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 1Ds was succeeded by the Canon 1Ds Mark II.

Review summary: Canon 1Ds vs Pentax K-3 II

So what conclusions can be drawn? Which of the two cameras – the Canon 1Ds or the Pentax K-3 II – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.

Arguments in favor of the Canon EOS-1Ds:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
• More heavily discounted: Has been available for much longer (launched in September 2002).

Reasons to prefer the Pentax K-3 II:

• More detail: Has more megapixels (24.1 vs 11MP), which boosts linear resolution by 48%.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• High quality composites: Can combine several shots after pixel-shifting its sensor.
• Better image quality: Scores substantially higher (17 points) in the DXO overall evaluation.
• Richer colors: Generates noticeably more natural colors (1.8 bits more color depth).
• More dynamic range: Captures a broader range of light and dark details (2.6 EV of extra DR).
• Broader imaging potential: Can capture not only stills but also 1080/60i video.
• 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).
• Faster burst: Shoots at higher frequency (8.3 vs 3 flaps/sec) to capture the decisive moment.
• More compact: Is smaller (131x100mm vs 156x157.6mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 465g or 37 percent) and is thus easier to take along.
• Longer lasting: Gets more shots (720 versus 600) out of a single battery charge.
• Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
• More affordable: Was introduced into a lower priced category (88 percent cheaper at launch).
• More modern: Reflects 12 years and 7 months of technical progress since the 1Ds launch.

If the count of relative strengths (bullet points above) is taken as a measure, the K-3 II is the clear winner of the contest (16 : 3 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the 1Ds or the K-3 II handle or perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate. This is where reviews by experts come in. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Canon 1Ds»	-	HiRec	-	-	-	Sep 2002	8,999	-		Canon 1Ds
	Pentax K-3 II«	-	-	5/5	4.5/5	5/5	Apr 2015	1,099			Pentax K-3 II
	Canon 1D X Mark II« »	-	89/100	4.5/5	5/5	4.5/5	Feb 2016	5,999			Canon 1D X Mark II
	Canon 80D« »	HiRec	84/100	4.5/5	4.5/5	4.5/5	Feb 2016	1,199			Canon 80D
	Canon 1D C« »	-	-	-	-	-	Apr 2012	14,999	-		Canon 1D C
	Canon 1D Mark IV« »	-	89/100	-	5/5	-	Oct 2009	4,999	-		Canon 1D Mark IV
	Canon 1D Mark III« »	-	-	-	rev	-	Feb 2007	4,499	-		Canon 1D Mark III
	Canon 1Ds Mark III« »	-	HiRec	4.5/5	-	-	Aug 2007	7,999	-		Canon 1Ds Mark III
	Canon 1D Mark II N« »	-	-	-	-	-	Aug 2005	3,999	-		Canon 1D Mark II N
	Canon 5D« »	88/100	HiRec	rev	rev	-	Aug 2005	3,299	-		Canon 5D
	Canon 1D Mark II« »	-	HiRec	-	rev	-	Jan 2004	4,499	-		Canon 1D Mark II
	Canon 1Ds Mark II« »	-	HiRec	-	-	-	Sep 2004	7,999	-		Canon 1Ds Mark II
	Nikon D2Xs« »	-	-	-	rev	-	Jun 2006	4,699	-		Nikon D2Xs
	Pentax KP« »	-	82/100	5/5	-	4.5/5	Jan 2017	1,099			Pentax KP
	Pentax K-70« »	-	79/100	4.5/5	4/5	4.5/5	Jun 2016	649			Pentax K-70
	Pentax K-3« »	-	83/100	5/5	4.5/5	5/5	Oct 2013	1,299	-		Pentax K-3
	Pentax K-5« »	-	83/100	5/5	4.5/5	4.5/5	Sep 2010	1,099	-		Pentax K-5

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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.

Other camera comparisons

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