Pentax 645Z versus Leica SL
The Pentax 645Z and the Leica SL (Typ 601) are two digital cameras that were revealed to the public, respectively, in April 2014 and October 2015. The 645Z is a DSLR, while the SL is a mirrorless interchangeable lens camera. The cameras are based on a medium format (645Z) and a full frame sensor. The Pentax has a resolution of 51.1 megapixel, whereas the Leica provides 24 MP.
An illustration of the physical size and weight of the Pentax 645Z and the Leica SL is provided in the side-by-side display below. 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. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the 645Z – represents 100 percent 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 Leica SL is notably smaller (16 percent) than the Pentax 645Z. Moreover, the SL is substantially lighter (45 percent) than the 645Z. Cameras intended for semi-professional or professional use tend to be a bit bulkier in order to give them the necessary ruggedness. 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.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 comparisons there.
|Camera Body Specifications
|Pentax 645Z (⇒ rgt)||156 mm||117 mm||123 mm||1550 g||650||YES||2014||8,499||latest||check|
|Leica SL (⇒ lft)||147 mm||104 mm||39 mm||847 g||400||YES||2015||7,450||latest||check|
|Canon 80D (⇒ lft | rgt)||139 mm||105 mm||79 mm||730 g||960||YES||2016||1,199||latest||check|
|Canon 1D X Mark II (⇒ lft | rgt)||158 mm||168 mm||83 mm||1530 g||1210||YES||2016||5,999||latest||check|
|Canon 5DS R (⇒ lft | rgt)||152 mm||116 mm||76 mm||930 g||700||YES||2015||3,699||latest||check|
|Canon 5DS (⇒ lft | rgt)||152 mm||116 mm||76 mm||930 g||700||YES||2015||3,699||latest||check|
|Hasselblad X1D (⇒ lft | rgt)||150 mm||98 mm||71 mm||725 g||..||YES||2016||8,995||latest||check|
|Leica Q Typ 116 (⇒ lft | rgt)||130 mm||80 mm||93 mm||640 g||..||no||2015||4,249||latest||check|
|Leica M Typ 240 (⇒ lft | rgt)||139 mm||80 mm||42 mm||680 g||..||YES||2012||6,950||discont.||check|
|Nikon D5 (⇒ lft | rgt)||160 mm||159 mm||92 mm||1415 g||3780||YES||2016||6,499||latest||check|
|Nikon D750 (⇒ lft | rgt)||141 mm||113 mm||78 mm||750 g||1230||YES||2014||2,299||latest||check|
|Nikon D810 (⇒ lft | rgt)||146 mm||123 mm||82 mm||980 g||1200||YES||2014||3,299||discont.||check|
|Nikon D4S (⇒ lft | rgt)||160 mm||157 mm||91 mm||1350 g||3020||YES||2014||6,499||discont.||check|
|Pentax 645D (⇒ lft | rgt)||156 mm||117 mm||119 mm||1480 g||..||YES||2010||9,995||discont.||check|
|Sony RX1R II (⇒ lft | rgt)||113 mm||65 mm||72 mm||507 g||220||no||2015||3,299||latest||check|
|Sony A7S (⇒ lft | rgt)||127 mm||94 mm||48 mm||489 g||380||YES||2014||2,499||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The SL was launched at a somewhat lower price (by 12 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The size of the sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the 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 Pentax 645Z features a medium format sensor and the Leica SL a full frame sensor. The sensor area in the SL is 40 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.0. The sensor in the 645Z has a native 4:3 aspect ratio, while the one in the SL offers a 3:2 aspect.
With 51.1MP, the 645Z offers a higher resolution than the SL (24MP), but the 645Z has smaller individual pixels (pixel pitch of 5.31μm versus 6μm for the SL). Moreover, the SL is a somewhat more recent model (by 1 year and 6 months) than the 645Z, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
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.
|Pentax 645Z (⇒ rgt)||Medium Format||51.1||8256||6192||1080/60i||26.0||14.7||4505||101|
|Leica SL (⇒ lft)||Full Frame||24.0||6000||4000||4K/30p||25.0||13.4||1821||88|
|Canon 80D (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||23.6||13.2||1135||79|
|Canon 1D X Mark II (⇒ lft | rgt)||Full Frame||20.0||5472||3648||4K/60p||24.1||13.5||3207||88|
|Canon 5DS R (⇒ lft | rgt)||Full Frame||50.3||8688||5792||1080/60p||24.6||12.4||2308||86|
|Canon 5DS (⇒ lft | rgt)||Full Frame||50.3||8688||5792||1080/60p||24.7||12.4||2381||87|
|Hasselblad X1D (⇒ lft | rgt)||Medium Format||51.3||8272||6200||1080/25p||26.2||14.8||4489||102|
|Leica Q Typ 116 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||24.3||12.7||2221||85|
|Leica M Typ 240 (⇒ lft | rgt)||Full Frame||23.7||5952||3976||1080/25p||24.0||13.3||1860||84|
|Nikon D5 (⇒ lft | rgt)||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|Nikon D750 (⇒ lft | rgt)||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|Nikon D810 (⇒ lft | rgt)||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97|
|Nikon D4S (⇒ lft | rgt)||Full Frame||16.2||4928||3280||1080/60p||24.4||13.3||3074||89|
|Pentax 645D (⇒ lft | rgt)||Medium Format||39.5||7264||5440||no||24.6||12.6||1262||82|
|Sony RX1R II (⇒ lft | rgt)||Full Frame||42.2||7952||5304||1080/60p||25.8||13.9||3204||97|
|Sony A7S (⇒ lft | rgt)||Full Frame||12.0||4240||2832||1080/60p||23.9||13.2||3702||87|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the SL provides a better video resolution than the 645Z. It can shoot movie footage at 4K/30p, while the Pentax is limited to 1080/60i.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the SL has an electronic viewfinder (4400k dots), while the 645Z has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The adjacent table lists some of the other core features of the Pentax 645Z and Leica SL along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.
|Pentax 645Z (⇒ rgt)||optical||YES||3.2||1037||tilting||no||4000||3.0||no||no|
|Leica SL (⇒ lft)||4400||YES||3.0||1040||fixed||YES||8000||11.0||no||no|
|Canon 80D (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||8000||7.0||12||no|
|Canon 1D X Mark II (⇒ lft | rgt)||optical||YES||3.2||1620||fixed||YES||8000||16.0||no||no|
|Canon 5DS R (⇒ lft | rgt)||optical||YES||3.2||1040||fixed||no||8000||5.0||no||no|
|Canon 5DS (⇒ lft | rgt)||optical||YES||3.2||1040||fixed||no||8000||5.0||no||no|
|Hasselblad X1D (⇒ lft | rgt)||2360||no||3.0||920||fixed||YES||2000||2.3||no||no|
|Leica Q Typ 116 (⇒ lft | rgt)||3680||no||3.0||1040||fixed||YES||2000||10.0||no||no|
|Leica M Typ 240 (⇒ lft | rgt)||optical||no||3.0||920||fixed||no||4000||3.0||no||no|
|Nikon D5 (⇒ lft | rgt)||optical||YES||3.2||2359||fixed||YES||8000||14.0||no||no|
|Nikon D750 (⇒ lft | rgt)||optical||YES||3.2||1229||tilting||no||4000||6.0||12||no|
|Nikon D810 (⇒ lft | rgt)||optical||YES||3.2||1229||fixed||no||4000||5.0||12||no|
|Nikon D4S (⇒ lft | rgt)||optical||YES||3.2||921||fixed||no||8000||11.0||no||no|
|Pentax 645D (⇒ lft | rgt)||optical||YES||3.0||921||fixed||no||4000||1.1||no||no|
|Sony RX1R II (⇒ lft | rgt)||2360||no||3.0||1229||tilting||no||4000||5.0||no||no|
|Sony A7S (⇒ lft | rgt)||2400||no||3.0||921||tilting||no||8000||5.0||no||no|
Both the 645Z and the SL are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The 645Z replaced the earlier Pentax 645D, while the SL does not have a direct predecessor.
So how do things add up? Which of the two cameras – the Pentax 645Z or the Leica SL – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Pentax 645Z:
- More detail: Offers more megapixels (51.1 vs 24MP) with a 43% higher linear resolution.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Longer lasting: Can take more shots (650 versus 400) on a single battery charge.
- More heavily discounted: Has been on the market for longer (launched in April 2014).
Reasons to prefer the Leica SL (Typ 601):
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
- More framing info: Has an electronic viewfinder that displays shooting data.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has a higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Faster burst: Shoots at higher frequency (11 vs 3 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (147x104mm vs 156x117mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 703g or 45 percent) and is thus easier to take along.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
- More affordable: Was released into a lower priced segment (12 percent cheaper at launch).
- More modern: Was introduced somewhat (1 year and 6 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the SL is the clear winner of the contest (11 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points.
In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 645Z and the SL in practical situations. 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 adjacent table relays the overall verdicts of several of the most popular camera review sites. You can find the full text of the reviews, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Pentax 645Z (⇒ rgt)||-||-||4.5/5||5/5||5/5||2014||8,499||latest||check|
|Leica SL (⇒ lft)||-||84/100||4.5/5||4/5||4/5||2015||7,450||latest||check|
|Canon 80D (⇒ lft | rgt)||HiRec||84/100 Silver||4.5/5||4.5/5||4.5/5||2016||1,199||latest||check|
|Canon 1D X Mark II (⇒ lft | rgt)||-||89/100 Gold||4.5/5||5/5||4.5/5||2016||5,999||latest||check|
|Canon 5DS R (⇒ lft | rgt)||Rec||83/100 Silver||5/5||5/5||4.5/5||2015||3,699||latest||check|
|Canon 5DS (⇒ lft | rgt)||Rec||83/100 Silver||4.5/5||5/5||4.5/5||2015||3,699||latest||check|
|Hasselblad X1D (⇒ lft | rgt)||-||-||-||-||4/5||2016||8,995||latest||check|
|Leica Q Typ 116 (⇒ lft | rgt)||-||80/100 Silver||4.5/5||-||4.5/5||2015||4,249||latest||check|
|Leica M Typ 240 (⇒ lft | rgt)||-||-||4/5||-||-||2012||6,950||discont.||check|
|Nikon D5 (⇒ lft | rgt)||-||89/100 Gold||4.5/5||5/5||5/5||2016||6,499||latest||check|
|Nikon D750 (⇒ lft | rgt)||HiRec||90/100 Gold||4.5/5||5/5||4.5/5||2014||2,299||latest||check|
|Nikon D810 (⇒ lft | rgt)||-||86/100 Gold||5/5||4.5/5||4.5/5||2014||3,299||discont.||check|
|Nikon D4S (⇒ lft | rgt)||-||-||4.5/5||5/5||4.5/5||2014||6,499||discont.||check|
|Pentax 645D (⇒ lft | rgt)||-||-||-||4.5/5||-||2010||9,995||discont.||check|
|Sony RX1R II (⇒ lft | rgt)||-||82/100 Silver||-||reviewed||4.5/5||2015||3,299||latest||check|
|Sony A7S (⇒ lft | rgt)||-||86/100 Gold||4.5/5||4.5/5||5/5||2014||2,499||discont.||check|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
In case you are interested in seeing how other cameras pair up, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If you do not see the camera that you are looking for, please send me an email, and I will try to update the database with the necessary infos.
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