Canon 30D vs Nikon D70s
The Canon EOS 30D and the Nikon D70s are two digital cameras that were officially introduced, respectively, in February 2006 and April 2005. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 8.2 megapixels, whereas the Nikon provides 6 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 30D and the Nikon D70s? 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.
The side-by-side display below illustrates the physical size and weight of the Canon 30D and the Nikon D70s. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size 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 Nikon D70s is somewhat larger (2 percent) than the Canon 30D. However, the D70s is markedly lighter (14 percent) than the 30D. In this context, it is worth noting that neither the 30D nor the D70s are weather-sealed.
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. Yet, since both cameras are based around an APS-C sensor, their respective lenses will tend to have similar dimensions and heft. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (30D) and the Nikon Lens Catalog (D70s).
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, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399|
|2.||Nikon D70s||140 mm||111 mm||78 mm||679 g||500||n||Apr 2005||899|
|3.||Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199|
|4.||Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399|
|5.||Canon 7D||148 mm||111 mm||74 mm||860 g||800||Y||Sep 2009||1,699|
|6.||Canon 50D||146 mm||108 mm||74 mm||822 g||800||Y||Aug 2008||1,299|
|7.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|8.||Canon 400D||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|9.||Canon 350D||127 mm||94 mm||64 mm||540 g||400||n||Feb 2005||899|
|10.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|11.||Nikon D40||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499|
|12.||Nikon D80||132 mm||103 mm||77 mm||668 g||600||n||Aug 2006||999|
|13.||Nikon D50||133 mm||102 mm||76 mm||620 g||400||n||Apr 2005||749|
|14.||Nikon D200||147 mm||113 mm||74 mm||920 g||400||Y||Nov 2005||1,699|
|15.||Nikon D70||140 mm||111 mm||78 mm||679 g||400||n||Jan 2004||999|
|16.||Nikon D100||144 mm||116 mm||81 mm||780 g||370||n||Feb 2002||1,999|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The D70s was launched at a markedly lower price (by 36 percent) than the 30D, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 imaging sensor is a crucial determinant 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. 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.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the D70s is 9 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (30D) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a smaller sensor, the Canon 30D offers a higher resolution of 8.2 megapixels, compared with 6 MP of the Nikon D70s. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 6.42μm versus 7.85μm for the D70s). However, it should be noted that the 30D is a somewhat more recent model (by 10 months) than the D70s, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.
The resolution advantage of the Canon 30D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 30D for good quality output (200 dots per inch) amounts to 17.5 x 11.7 inches or 44.5 x 29.7 cm, for very good quality (250 dpi) 14 x 9.3 inches or 35.6 x 23.7 cm, and for excellent quality (300 dpi) 11.7 x 7.8 inches or 29.7 x 19.8 cm. The corresponding values for the Nikon D70s are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.
The Canon EOS 30D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Nikon D70s are ISO 200 to ISO 1600 (no boost).
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 review, the 30D has a notably higher overall DXO score than the D70s (overall score 9 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1.1 bits higher color depth, 0.5 EV in additional dynamic range, and 0.5 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Note: DXO values in italics represent estimates based on sensor size and age.|
Apart from body and sensor, cameras can and do differ across a variety of features. The 30D and the D70s 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 viewfinders of both cameras offer the same field of view (95%), but the viewfinder of the 30D has a higher magnification than the one of the D70s (0.56x vs 0.50x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon 30D and Nikon D70s in connection with corresponding information for a sample of similar cameras.
|1.||Canon 30D||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0||Y||n|
|2.||Nikon D70s||optical||n||2.0 / 130||fixed||n||1/8000s||3.0||Y||n|
|3.||Canon 70D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0||Y||n|
|4.||Canon 60D||optical||Y||3.0 / 1040||swivel||n||1/8000s||5.3||Y||n|
|5.||Canon 7D||optical||Y||3.0 / 920||fixed||n||1/8000s||8.0||Y||n|
|6.||Canon 50D||optical||Y||3.0 / 920||fixed||n||1/8000s||6.3||Y||n|
|7.||Canon 40D||optical||Y||3.0 / 230||fixed||n||1/8000s||6.5||Y||n|
|8.||Canon 400D||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|9.||Canon 350D||optical||n||1.8 / 115||fixed||n||1/4000s||3.0||Y||n|
|10.||Canon 20D||optical||Y||1.8 / 118||fixed||n||1/8000s||5.0||Y||n|
|11.||Nikon D40||optical||n||2.5 / 230||fixed||n||1/4000s||2.5||Y||n|
|12.||Nikon D80||optical||n||2.5 / 230||fixed||n||1/4000s||3.0||Y||n|
|13.||Nikon D50||optical||n||2.0 / 130||fixed||n||1/4000s||2.5||Y||n|
|14.||Nikon D200||optical||Y||2.5 / 230||fixed||n||1/8000s||5.0||Y||n|
|15.||Nikon D70||optical||n||1.8 / 130||fixed||n||1/8000s||3.0||Y||n|
|16.||Nikon D100||optical||Y||1.8 / 118||fixed||n||1/4000s||3.0||Y||n|
One feature that is present on the 30D, but is missing on the D70s is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.
Concerning the storage of imaging data, both the 30D and the D70s write their files to Compact Flash cards.
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 30D and Nikon D70s and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 30D||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Nikon D70s||Y||- / -||-||-||-||2.0||-||-||-|
|3.||Canon 70D||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|4.||Canon 60D||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|5.||Canon 7D||Y||mono / -||Y||-||mini||2.0||-||-||-|
|6.||Canon 50D||Y||- / -||-||-||mini||2.0||-||-||-|
|7.||Canon 40D||Y||- / -||-||-||-||2.0||-||-||-|
|8.||Canon 400D||Y||- / -||-||-||-||2.0||-||-||-|
|9.||Canon 350D||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Canon 20D||Y||- / -||-||-||-||1.1||-||-||-|
|11.||Nikon D40||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Nikon D80||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Nikon D50||Y||- / -||-||-||-||2.0||-||-||-|
|14.||Nikon D200||Y||- / -||-||-||-||2.0||-||-||-|
|15.||Nikon D70||Y||- / -||-||-||-||1.0||-||-||-|
|16.||Nikon D100||Y||- / -||-||-||-||1.1||-||-||-|
Studio photographers will appreciate that the Canon 30D (unlike the D70s) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 30D and the D70s have been discontinued, but can regularly be found used on eBay. The D70s was replaced by the Nikon D80, while the 30D was followed by the Canon 40D. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Nikon websites.
So how do things add up? Is the Canon 30D better than the Nikon D70s or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Canon EOS 30D:
- More detail: Offers more megapixels (8.2 vs 6MP) with a 17% higher linear resolution.
- Better image quality: Scores markedly higher (9 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.1 bits more color depth).
- Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.56x vs 0.50x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (2.5" vs 2.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (230k vs 130k dots).
- Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (750 versus 500) on a single battery charge.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More modern: Is somewhat more recent (announced 10 months after the D70s).
Reasons to prefer the Nikon D70s:
- Less heavy: Has a lower weight (by 106g or 14 percent) and is thus easier to take along.
- More affordable: Was introduced into a lower priced category (36 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in April 2005).
If the count of relative strengths (bullet points above) is taken as a measure, the 30D is the clear winner of the match-up (12 : 3 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 30D and the Nikon D70s 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 30D or the D70s. 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 why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera 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.
|1.||Canon 30D||..||+ +||..||+ +||o||..||Feb 2006||1,399|
|2.||Nikon D70s||..||..||..||..||..||5/5||Apr 2005||899|
|3.||Canon 70D||5/5||+ +||..||83/100||4.5/5||5/5||Jul 2013||1,199|
|4.||Canon 60D||5/5||+||..||79/100||4/5||4.5/5||Aug 2010||1,399|
|5.||Canon 7D||5/5||+ +||..||84/100||4.5/5||4.5/5||Sep 2009||1,699|
|6.||Canon 50D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2008||1,299|
|7.||Canon 40D||..||+ +||..||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|8.||Canon 400D||..||+ +||..||+ +||o||4/5||Aug 2006||799|
|9.||Canon 350D||..||80/100||..||+ +||o||..||Feb 2005||899|
|10.||Canon 20D||..||..||..||+ +||..||..||Aug 2004||1,499|
|11.||Nikon D40||..||81/100||..||+ +||o||4.5/5||Nov 2006||499|
|12.||Nikon D80||..||+||..||+ +||o||4.5/5||Aug 2006||999|
|13.||Nikon D50||..||78/100||..||+ +||4/5||4.5/5||Apr 2005||749|
|14.||Nikon D200||..||+ +||..||+ +||o||..||Nov 2005||1,699|
|15.||Nikon D70||..||..||..||+ +||..||..||Jan 2004||999|
|16.||Nikon D100||..||..||..||+ +||o||..||Feb 2002||1,999|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
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Specifications: Canon 30D vs Nikon D70s
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Canon 30D||Nikon D70s|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Nikon F mount lenses|
|Launch Date||February 2006||April 2005|
|Launch Price||USD 1,399||USD 899|
|Sensor Specs||Canon 30D||Nikon D70s|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.5 x 15.0 mm||23.7 x 15.6 mm|
|Sensor Area||337.5 mm2||369.72 mm2|
|Sensor Diagonal||27 mm||28.4 mm|
|Sensor Resolution||8.2 Megapixels||6 Megapixels|
|Image Resolution||3504 x 2336 pixels||3008 x 2000 pixels|
|Pixel Pitch||6.42 μm||7.85 μm|
|Pixel Density||2.43 MP/cm2||1.63 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||no Video|
|ISO Setting||100 - 1,600 ISO||200 - 1,600 ISO|
|ISO Boost||100 - 3,200 ISO||no Enhancement|
|DXO Sensor Quality (score)||59||50|
|DXO Color Depth (bits)||21.5||20.4|
|DXO Dynamic Range (EV)||10.8||10.3|
|DXO Low Light (ISO)||736||529|
|Screen Specs||Canon 30D||Nikon D70s|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|Top-Level Screen||Control Panel||no Top Display|
|Rear LCD Size||2.5inch||2.0inch|
|LCD Resolution||230k dots||130k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 30D||Nikon D70s|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||5 shutter flaps/s||3 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||50 000 actuations|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||CF cards||CF cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 30D||Nikon D70s|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||no HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 30D||Nikon D70s|
|Battery Life (CIPA)||750 shots per charge||500 shots per charge|
144 x 106 x 74 mm
(5.7 x 4.2 x 2.9 in)
140 x 111 x 78 mm
(5.5 x 4.4 x 3.1 in)
|Camera Weight||785 g (27.7 oz)||679 g (24.0 oz)|
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