A potelyt.com – Photography & Imaging Resources
ad

When you use links on apotelyt.com to buy products,
the site may earn a commission.

PW

Olympus E-500 vs Sony H200

The Olympus Evolt E-500 and the Sony Cyber-shot DSC-H200 are two digital cameras that were revealed to the public, respectively, in September 2005 and January 2013. The E-500 is a DSLR, while the H200 is a fixed lens compact. The cameras are based on a Four Thirds (E-500) and a 1/2.3-inch (H200) sensor. The Olympus has a resolution of 8 megapixels, whereas the Sony provides 15.2 MP.

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

Headline Specifications
Olympus E-500
versus
Sony H200
Olympus E-500   Sony H200
Digital single lens reflex Fixed lens compact camera
Four Thirds lenses 24-633mm f/3.1-5.9
8 MP – Four Thirds sensor 15.2 MP – 1/2.3" sensor
no Video 720/30p Video
ISO 100-400 (100 - 1,600) ISO 100-3,200
Optical viewfinder No viewfinder, LCD framing
2.5" LCD – 215k dots 3.0" LCD – 460k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
2.5 shutter flaps per second 0.8 shutter flaps per second
750 shots per battery charge240 shots per battery charge
130 x 95 x 66 mm, 479 g 123 x 83 x 87 mm, 530 g
logo
Check E-500 offers at
ebay.com
logo
Check H200 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus Evolt E-500 and the Sony Cyber-shot DSC-H200? 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.

ad

Body comparison

The side-by-side display below illustrates the physical size and weight of the Olympus E-500 and the Sony H200. 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 width, height and depth dimensions are rounded to the nearest millimeter.

Size Olympus E-500 vs Sony H200
Compare E-500 versus H200 top
Comparison E-500 or H200 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony H200 is notably smaller (17 percent) than the Olympus E-500. In this context, it is worth noting that neither the E-500 nor the H200 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the H200 has a lens built in, whereas the E-500 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the E-500 and their specifications in the Four Thirds Lens Catalog.

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.

scroll hint
Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-500 130 mm 95 mm 66 mm 479 g 750 n Sep 2005 599ebay.com
2.
 
Sony H200 123 mm 83 mm 87 mm 530 g 240 n Jan 2013 249ebay.com
3.
 
Canon SX520 120 mm 82 mm 92 mm 441 g 210 n Jul 2014 399ebay.com
4.
 
Nikon B500 114 mm 78 mm 95 mm 541 g 600 n Jan 2016 299ebay.com
5.
 
Nikon L840 113 mm 78 mm 96 mm 538 g 590 n Feb 2015 299ebay.com
6.
 
Olympus E-450 130 mm 91 mm 53 mm 440 g 500 n Mar 2009 499ebay.com
7.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 699ebay.com
8.
 
Olympus E-420 130 mm 91 mm 53 mm 440 g 500 n Mar 2008 599ebay.com
9.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 699ebay.com
10.
 
Olympus E-410 130 mm 91 mm 53 mm 435 g 500 n Mar 2007 699ebay.com
11.
 
Olympus E-510 136 mm 92 mm 68 mm 538 g 750 n Mar 2007 799ebay.com
12.
 
Olympus E-330 140 mm 87 mm 72 mm 637 g 750 n Jan 2006 999ebay.com
13.
 
Olympus E-400 130 mm 91 mm 53 mm 435 g 500 n Sep 2006 699ebay.com
14.
 
Olympus E-300 147 mm 85 mm 64 mm 624 g 750 n Sep 2004 799ebay.com
15.
 
Panasonic L10 135 mm 96 mm 78 mm 556 g 450 n Aug 2007 599ebay.com
16.
 
Sony H400 130 mm 95 mm 122 mm 628 g 300 n Feb 2014 319ebay.com
17.
 
Sony H300 128 mm 89 mm 92 mm 590 g 350 n Feb 2014 219ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
padding

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 H200 was launched at a lower price than the E-500, despite having a lens built in. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Olympus E-500 features a Four Thirds sensor and the Sony H200 a 1/2.3-inch sensor. The sensor area in the H200 is 88 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Olympus E-500 and Sony H200 sensor measures

Despite having a smaller sensor, the H200 offers a higher resolution of 15.2 megapixels, compared with 8 MP of the E-500. 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 1.36μm versus 5.30μm for the E-500). However, it should be noted that the H200 is much more recent (by 7 years and 3 months) than the E-500, 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 H200 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony H200 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the H200 for good quality output (200 dots per inch) amounts to 25.9 x 14.7 inches or 65.8 x 37.2 cm, for very good quality (250 dpi) 20.7 x 11.7 inches or 52.7 x 29.8 cm, and for excellent quality (300 dpi) 17.3 x 9.8 inches or 43.9 x 24.8 cm. The corresponding values for the Olympus E-500 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-500 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 Sony Cyber-shot DSC-H200 are ISO 100 to ISO 3200 (no boost).

Technology-wise, both cameras are equipped with CCD (Charged Coupled Device) 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-500 versus H200 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.

scroll hint
Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-500 Four Thirds 8.0 3264 2448none20.710.34551
2.
 
Sony H200 1/2.3 15.2 5184 2930720/30p19.911.252944
3.
 
Canon SX520 1/2.3 15.9 4608 34561080/30p20.111.567246
4.
 
Nikon B500 1/2.3 15.9 4608 34561080/60i20.311.781048
5.
 
Nikon L840 1/2.3 15.9 4608 34561080/60i20.211.672147
6.
 
Olympus E-450 Four Thirds 10.0 3648 2736none21.510.551256
7.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
8.
 
Olympus E-420 Four Thirds 10.0 3648 2736none21.510.452756
9.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
10.
 
Olympus E-410 Four Thirds 10.0 3648 2736none21.110.049451
11.
 
Olympus E-510 Four Thirds 10.0 3648 2736none21.210.044252
12.
 
Olympus E-330 Four Thirds 7.4 3136 2352none20.810.47352
13.
 
Olympus E-400 Four Thirds 10.0 3648 2736none21.010.612753
14.
 
Olympus E-300 Four Thirds 8.0 3264 2448none20.410.1-4048
15.
 
Panasonic L10 Four Thirds 10.0 3648 2736none21.310.842955
16.
 
Sony H400 1/2.3 19.9 5152 3864720/30p20.111.463045
17.
 
Sony H300 1/2.3 19.9 5152 3864720/30p20.111.463045
Note: DXO values in italics represent estimates based on sensor size and age.
padding

Many modern cameras are not only capable of taking still images, but can also record movies. The H200 indeed provides for movie recording, while the E-500 does not. The highest resolution format that the H200 can use is 720/30p.

ad

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the E-500 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the H200 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Olympus E-500 and Sony H200 along with similar information for a selection of comparators.

scroll hint
Core Features
# image 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-500optical n2.5 / 215 fixed n 1/4000s 2.5/s Y n
2.
 
Sony H200none n3.0 / 460 fixed n 1/1500s 0.8/s Y Y
3.
 
Canon SX520none n3.0 / 461 fixed n 1/2000s 1.6/s Y Y
4.
 
Nikon B500none n3.0 / 921 tilting n 1/4000s 7.4/s Y Y
5.
 
Nikon L840none n3.0 / 921 tilting n 1/4000s 7.4/s Y Y
6.
 
Olympus E-450optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
7.
 
Olympus E-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
8.
 
Olympus E-420optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
9.
 
Olympus E-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
10.
 
Olympus E-410optical n2.5 / 215 fixed n 1/4000s 3.0/s Y n
11.
 
Olympus E-510optical n2.5 / 215 fixed n 1/4000s 3.0/s Y Y
12.
 
Olympus E-330optical n2.5 / 215 tilting n 1/4000s 3.0/s Y n
13.
 
Olympus E-400optical n2.5 / 215 fixed n 1/4000s 3.0/s Y n
14.
 
Olympus E-300optical n1.8 / 134 fixed n 1/4000s 2.5/s Y n
15.
 
Panasonic L10optical n2.5 / 207 swivel n 1/4000s 3.0/s Y n
16.
 
Sony H400210 n3.0 / 460 fixed n 1/2000s 0.7/s Y Y
17.
 
Sony H300none n3.0 / 460 fixed n 1/1500s 0.8/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
padding

The E-500 writes its imaging data to Compact Flash or xD Picture cards, while the H200 uses SDXC or Memory Stick PRO Duo cards. The E-500 features dual card slots, which can be very useful in case a memory card fails. In contrast, the H200 only has one slot.

ad

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-500 and Sony Cyber-shot DSC-H200 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

scroll hint
Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-500Y- / ----2.0---
2.
 
Sony H200-mono / mono---2.0---
3.
 
Canon SX520-stereo / mono--mini2.0---
4.
 
Nikon B500-stereo / mono--micro2.0YYY
5.
 
Nikon L840-stereo / mono--micro2.0YY-
6.
 
Olympus E-450Y- / ----2.0---
7.
 
Olympus E-620Y- / ----2.0---
8.
 
Olympus E-420Y- / ----2.0---
9.
 
Olympus E-520Y- / ----2.0---
10.
 
Olympus E-410Y- / ----2.0---
11.
 
Olympus E-510Y- / ----2.0---
12.
 
Olympus E-330Y- / ----2.0---
13.
 
Olympus E-400Y- / ----2.0---
14.
 
Olympus E-300Y- / ----2.0---
15.
 
Panasonic L10Y- / ----2.0---
16.
 
Sony H400-mono / mono--micro2.0Y--
17.
 
Sony H300-mono / mono--micro2.0Y--
padding

It is notable that the E-500 has a hotshoe, while the H200 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Both the E-500 and the H200 have been discontinued, but can regularly be found used on ebay. The E-500 was replaced by the Olympus E-510, while the H200 does not have a direct successor. Further information on the features and operation of the E-500 and H200 can be found, respectively, in the Olympus E-500 Manual (free pdf) or the online Sony H200 Manual.

ad

Review summary

So what is the bottom line? Is the Olympus E-500 better than the Sony H200 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

ilogo

Arguments in favor of the Olympus Evolt E-500:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/1500s) to freeze action.
  • Faster burst: Shoots at higher frequency (2.5 vs 0.8 flaps/sec) to capture the decisive moment.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (750 versus 240) on a single battery charge.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been available for much longer (launched in September 2005).

ilogo

Advantages of the Sony Cyber-shot DSC-H200:

  • More detail: Has more megapixels (15.2 vs 8MP), which boosts linear resolution by 46%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Broader imaging potential: Can capture not only stills but also 720/30p video.
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (460k vs 215k dots).
  • Ready to shoot: Comes with an integrated lens, while the E-500 requires a separate lens.
  • More compact: Is smaller (123x83mm vs 130x95mm) and will fit more readily into a bag.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 7 years and 3 months of technical progress since the E-500 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the E-500 emerges as the winner of the contest (13 : 10 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-500 13:10 H200

How about other alternatives? Do the specifications of the Olympus E-500 and the Sony H200 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Superzoom Camera listings 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 E-500 or the H200. 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 hands-on reviews by experts are important. 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.

scroll hint
Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-500..76/100..+ +.... Sep 2005 599ebay.com
2.
 
Sony H200........3.5/53.5/5 Jan 2013 249ebay.com
3.
 
Canon SX520..+....3.5/53.5/5 Jul 2014 399ebay.com
4.
 
Nikon B500..+....4/53.5/5 Jan 2016 299ebay.com
5.
 
Nikon L840..+ +....3.5/54/5 Feb 2015 299ebay.com
6.
 
Olympus E-450........4/54/5 Mar 2009 499ebay.com
7.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 699ebay.com
8.
 
Olympus E-420..85/100..+ +4/54.5/5 Mar 2008 599ebay.com
9.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 699ebay.com
10.
 
Olympus E-410..86/100..+ +4/54.5/5 Mar 2007 699ebay.com
11.
 
Olympus E-510..89/100..+ +3.5/54.5/5 Mar 2007 799ebay.com
12.
 
Olympus E-330......+o.. Jan 2006 999ebay.com
13.
 
Olympus E-400..85/100....4/54/5 Sep 2006 699ebay.com
14.
 
Olympus E-300......+o4.5/5 Sep 2004 799ebay.com
15.
 
Panasonic L10..85/100..+3.5/54/5 Aug 2007 599ebay.com
16.
 
Sony H400..o....3.5/53.5/5 Feb 2014 319ebay.com
17.
 
Sony H300..+....4.5/54/5 Feb 2014 219ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
padding

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, 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.

logo
Check E-500 offers at
ebay.com
logo
Check H200 offers at
ebay.com

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

~
    loader
    ad

    Specifications: Olympus E-500 vs Sony H200

    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-500 Sony H200
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Four Thirds lenses 24-633mm f/3.1-5.9
    Launch Date September 2005 January 2013
    Launch Price USD 599 USD 249
    Sensor Specs Olympus E-500 Sony H200
    Sensor Technology CCD CCD
    Sensor Format Four Thirds Sensor 1/2.3" Sensor
    Sensor Size 17.3 x 13.0 mm 6.17 x 4.55 mm
    Sensor Area 224.9 mm2 28.0735 mm2
    Sensor Diagonal 21.6 mm 7.7 mm
    Crop Factor 2.0x 5.6x
    Sensor Resolution 8 Megapixels 15.2 Megapixels
    Image Resolution 3264 x 2448 pixels 5184 x 2930 pixels
    Pixel Pitch 5.30 μm 1.36 μm
    Pixel Density 3.55 MP/cm2 54.10 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 720/30p Video
    ISO Setting 100 - 400 ISO 100 - 3,200 ISO
    ISO Boost 100 - 1,600 ISO no Enhancement
    Image Processor TruePic BIONZ
    Screen Specs Olympus E-500 Sony H200
    Viewfinder Type Optical viewfinder no viewfinder
    Viewfinder Field of View 95%
    Viewfinder Magnification 0.45x
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.0inch
    LCD Resolution 215k dots 460k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Olympus E-500 Sony H200
    Focus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 2.5 shutter flaps/s 0.8 shutter flaps/s
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium CF or XD cards MS or SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    Connectivity Specs Olympus E-500 Sony H200
    External Flash Hotshoe no Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI no HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Olympus E-500 Sony H200
    Battery Type Olympus BLM-1 Sony 4xAA
    Battery Life (CIPA)750 shots per charge240 shots per charge
    Body Dimensions 130 x 95 x 66 mm
    (5.1 x 3.7 x 2.6 in)
    123 x 83 x 87 mm
    (4.8 x 3.3 x 3.4 in)
    Camera Weight 479 g (16.9 oz) 530 g (18.7 oz)
    logo
    Check E-500 offers at
    ebay.com
    logo
    Check H200 offers at
    ebay.com

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

    You are here Home  »  CAM-parator  »  Olympus E-500 vs Sony H200