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Olympus E-300 vs Pentax 645Z

The Olympus Evolt E-300 and the Pentax 645Z are two digital cameras that were officially introduced, respectively, in September 2004 and April 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a Four Thirds (E-300) and a medium format (645Z) sensor. The Olympus has a resolution of 8 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
Olympus E-300
versus
Pentax 645Z
Olympus E-300   Pentax 645Z
Digital single lens reflex Digital single lens reflex
Four Thirds lenses Pentax 645 mount lenses
8 MP – Four Thirds sensor 51.1 MP – Medium Format sensor
no Video 1080/60i Video
ISO 100-400 (100 - 1,600) ISO 100-204,800
Optical viewfinder Optical viewfinder
1.8" LCD – 134k dots 3.2" LCD – 1037k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
2.5 shutter flaps per second 3 shutter flaps per second
not weather sealedWeathersealed body
750 shots per battery charge650 shots per battery charge
147 x 85 x 64 mm, 624 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 Olympus Evolt E-300 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 Olympus E-300 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 measures are rounded to the nearest millimeter.

Size Olympus E-300 vs Pentax 645Z
Compare E-300 versus 645Z top
Comparison E-300 or 645Z rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645Z is considerably larger (46 percent) than the Olympus E-300. Moreover, the 645Z is substantially heavier (148 percent) than the E-300. It is noteworthy in this context that the 645Z is splash and dust-proof, while the E-300 does not feature any corresponding weather-sealing.

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 E-300 gets 750 shots out of its BLM-1 battery, while the 645Z can take 650 images on a single charge of its D-LI90 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-300 147 mm 85 mm 64 mm 624 g 750 n Sep 2004 799ebay.com
2.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 amazon.com
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 amazon.com
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 amazon.com
5.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899ebay.com
6.
 
Hasselblad X1D 150 mm 98 mm 71 mm 725 g .. Y Jun 2016 8,995ebay.com
7.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450ebay.com
8.
 
Leica Digilux 3 146 mm 87 mm 77 mm 606 g 750 n Sep 2006 1,499ebay.com
9.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 699ebay.com
10.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 699ebay.com
11.
 
Olympus E-410 130 mm 91 mm 53 mm 435 g 500 n Mar 2007 699ebay.com
12.
 
Olympus E-510 136 mm 92 mm 68 mm 538 g 750 n Mar 2007 799ebay.com
13.
 
Olympus E-330 140 mm 87 mm 72 mm 637 g 750 n Jan 2006 999ebay.com
14.
 
Olympus E-400 130 mm 91 mm 53 mm 435 g 500 n Sep 2006 699ebay.com
15.
 
Olympus E-500 130 mm 95 mm 66 mm 479 g 750 n Sep 2005 599ebay.com
16.
 
Olympus E-1 141 mm 104 mm 81 mm 738 g 750 Y Jun 2003 1,699ebay.com
17.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-300 was launched at a markedly lower price (by 91 percent) than the 645Z, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

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.

Of the two cameras under consideration, the Olympus E-300 features a Four Thirds sensor and the Pentax 645Z a medium format sensor. The sensor area in the 645Z is 539 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 0.79. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Olympus E-300 and Pentax 645Z sensor measures

With 51.1MP, the 645Z offers a higher resolution than the E-300 (8MP), but the 645Z nevertheless has the same individual pixel size (pixel pitch of 5.30μm) as the E-300 due to its larger sensor. Moreover, the 645Z is a much more recent model (by 9 years and 6 months) than the E-300, 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 Olympus E-300 are 16.3 x 12.2 inches or 41.5 x 31.1 cm for good quality, 13.1 x 9.8 inches or 33.2 x 24.9 cm for very good quality, and 10.9 x 8.2 inches or 27.6 x 20.7 cm for excellent quality prints.

The Olympus Evolt E-300 has a native sensitivity range from ISO 100 to ISO 400, which can be extended to ISO 100-1600. The corresponding ISO settings for the Pentax 645Z are ISO 100 to ISO 204800 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

E-300 versus 645Z MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-300 Four Thirds 8.0 3264 2448none20.410.1-4048
2.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
3.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
4.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
5.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
6.
 
Hasselblad X1D Medium Format 51.3 8272 62001080/25p26.214.84489102
7.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
8.
 
Leica Digilux 3 Four Thirds 7.4 3136 2352none21.010.612753
9.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
10.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
11.
 
Olympus E-410 Four Thirds 10.0 3648 2736none21.110.049451
12.
 
Olympus E-510 Four Thirds 10.0 3648 2736none21.210.044252
13.
 
Olympus E-330 Four Thirds 7.4 3136 2352none20.810.47352
14.
 
Olympus E-400 Four Thirds 10.0 3648 2736none21.010.612753
15.
 
Olympus E-500 Four Thirds 8.0 3264 2448none20.710.34551
16.
 
Olympus E-1 Four Thirds 4.9 2560 1920none20.09.7-14544
17.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
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 E-300 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 E-300 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 645Z offers a wider field of view (98%) than the one in the E-300 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 645Z has a higher magnification (0.78x vs 0.5x), 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 Olympus E-300 and Pentax 645Z in connection with corresponding information for a sample of similar cameras.

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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.
 
Olympus E-300optical n1.8 / 134 fixed n 1/4000s 2.5/s Y n
2.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
3.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
5.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
6.
 
Hasselblad X1D2360 n3.0 / 920 fixed Y 1/2000s 2.3/s n n
7.
 
Leica SL4400 Y3.0 / 1040 fixed Y 1/8000s 11.0/s n n
8.
 
Leica Digilux 3optical n2.5 / 207 fixed n 1/4000s 3.0/s Y n
9.
 
Olympus E-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
10.
 
Olympus E-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
11.
 
Olympus E-410optical n2.5 / 215 fixed n 1/4000s 3.0/s Y n
12.
 
Olympus E-510optical n2.5 / 215 fixed n 1/4000s 3.0/s Y Y
13.
 
Olympus E-330optical n2.5 / 215 tilting n 1/4000s 3.0/s Y n
14.
 
Olympus E-400optical n2.5 / 215 fixed n 1/4000s 3.0/s Y n
15.
 
Olympus E-500optical n2.5 / 215 fixed n 1/4000s 2.5/s Y n
16.
 
Olympus E-1optical Y1.8 / 134 fixed n 1/4000s 3.0/s n n
17.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The E-300 has one, while the 645Z does not. While the built-in flash of the E-300 is not very powerful, it can at times be useful as a fill-in light.

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 E-300 writes its imaging data to Compact Flash or xD Picture cards, while the 645Z uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

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 Olympus Evolt E-300 and Pentax 645Z and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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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.
 
Olympus E-300Y- / ----2.0---
2.
 
Pentax 645ZYstereo / monoY-mini3.0---
3.
 
Canon 5DSYmono / monoY-mini3.0---
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Canon XTY- / ----2.0---
6.
 
Hasselblad X1DYstereo / monoYYmini3.0Y--
7.
 
Leica SLYstereo / monoYYfull3.0Y--
8.
 
Leica Digilux 3Ystereo / mono---2.0---
9.
 
Olympus E-620Y- / ----2.0---
10.
 
Olympus E-520Y- / ----2.0---
11.
 
Olympus E-410Y- / ----2.0---
12.
 
Olympus E-510Y- / ----2.0---
13.
 
Olympus E-330Y- / ----2.0---
14.
 
Olympus E-400Y- / ----2.0---
15.
 
Olympus E-500Y- / ----2.0---
16.
 
Olympus E-1Y- / ----2.0---
17.
 
Pentax 645DYstereo / ----2.0---

Studio photographers will appreciate that the Pentax 645Z (unlike the E-300) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The 645Z is a recent model that features in the current product line-up of Pentax. In contrast, the E-300 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-300 was succeeded by the Olympus E-330. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Pentax websites.

Review summary

So what is the bottom line? Which of the two cameras – the Olympus E-300 or the Pentax 645Z – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Olympus Evolt E-300:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (147x85mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 926g or 60 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (750 versus 650) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (91 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in September 2004).

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Advantages of the Pentax 645Z:

  • More detail: Has more megapixels (51.1 vs 8MP), which boosts linear resolution by 153%.
  • 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.
  • More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.5x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 134k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (3 vs 2.5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More modern: Reflects 9 years and 6 months of technical progress since the E-300 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the 645Z is the clear winner of the contest (19 : 7 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. 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.

E-300 07:19 645Z

How about other alternatives? Do the specifications of the Olympus E-300 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the E-300 or the 645Z perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-300......+o4.5/5 Sep 2004 799ebay.com
2.
 
Pentax 645Z5/5......4.5/55/5 Apr 2014 8,499 amazon.com
3.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 3,699 amazon.com
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699 amazon.com
5.
 
Canon XT..80/100..+ +o.. Feb 2005 899ebay.com
6.
 
Hasselblad X1D..o..81/100..4/5 Jun 2016 8,995ebay.com
7.
 
Leica SL4/5..4/584/1004.5/54/5 Oct 2015 7,450ebay.com
8.
 
Leica Digilux 3............ Sep 2006 1,499ebay.com
9.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 699ebay.com
10.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 699ebay.com
11.
 
Olympus E-410..86/100..+ +4/54.5/5 Mar 2007 699ebay.com
12.
 
Olympus E-510..89/100..+ +3.5/54.5/5 Mar 2007 799ebay.com
13.
 
Olympus E-330......+o.. Jan 2006 999ebay.com
14.
 
Olympus E-400..85/100....4/54/5 Sep 2006 699ebay.com
15.
 
Olympus E-500..76/100..+ +.... Sep 2005 599ebay.com
16.
 
Olympus E-1......+o.. Jun 2003 1,699ebay.com
17.
 
Pentax 645D5/5.......... Mar 2010 9,995ebay.com
Notes: (+ +) 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Olympus E-300 vs Pentax 645Z

    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 Specifications
    Camera Model Olympus E-300 Pentax 645Z
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Four Thirds lenses Pentax 645 mount lenses
    Launch Date September 2004 April 2014
    Launch Price USD 799 USD 8,499
    Sensor Specs Olympus E-300 Pentax 645Z
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Medium Format Sensor
    Sensor Size 17.3 x 13.0 mm 43.8 x 32.8 mm
    Sensor Area 224.9 mm2 1436.64 mm2
    Sensor Diagonal 21.6 mm 54.7 mm
    Crop Factor 2.0x 0.79x
    Sensor Resolution 8 Megapixels 51.1 Megapixels
    Image Resolution 3264 x 2448 pixels 8256 x 6192 pixels
    Pixel Pitch 5.30 μm 5.30 μm
    Pixel Density 3.55 MP/cm2 3.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100 - 400 ISO 100 - 204,800 ISO
    ISO Boost 100 - 1,600 ISO no Enhancement
    Image Processor TruePic PRIME III
    DXO Sensor Quality (score) .. 101
    DXO Color Depth (bits) .. 26.0
    DXO Dynamic Range (EV) .. 14.7
    DXO Low Light (ISO) .. 4505
    Screen Specs Olympus E-300 Pentax 645Z
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 98%
    Viewfinder Magnification 0.5x 0.78x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 1.8inch 3.2inch
    LCD Resolution 134k dots 1037k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Olympus E-300 Pentax 645Z
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 2.5 shutter flaps/s 3 shutter flaps/s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF or XD cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    Connectivity Specs Olympus E-300 Pentax 645Z
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi no Wifi
    Body Specs Olympus E-300 Pentax 645Z
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type BLM-1 D-LI90
    Battery Life (CIPA)750 shots per charge650 shots per charge
    Body Dimensions 147 x 85 x 64 mm
    (5.8 x 3.3 x 2.5 in)
    156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    Camera Weight 624 g (22.0 oz) 1550 g (54.7 oz)
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