Barrenjoey Lighthouse, NSW

At the end of September 2013, we watch on the news as fire broke out at the Barrenjoey Headland in the northern beaches of Sydney. For those not familiar with this area, the beach and the lighthouse doubles as a Summer Bay in the popular Australian TV series, Home and Away.

One week later, we visited the site to witness the aftermath of the fire. It is amazing that the lighthouse and cottages remain intact while the bushland around it was ravaged. Here is the link to the ABC site for some photos during the fire outbreak.

Here are some photos I took using the Nokia Lumia 920.

The National Park rangers and volunteers are looking for volunteers to assist at the end of October beginning of November 2013. If you're in the area or want to volunteer, please contact the rangers.

Shark beach, Nielsen Park, Sydney Australia

WP 20130120 001 from pureviewphotography on Vimeo.

It always amazes me our beach culture. On an overcast day, there are still people at the beach.

TIP: Mastering exposure compensation

One of the coolest feature of a windows phone is the ability to change settings. You can change a whole host of features including:

• Scenes
• ISO
• Exposure value (EV)
• White Balance
• Aspect Ratio
• Focus Assist.

A setting you should get use to playing with is the exposure value (EV). This setting allows you to compensate for difficult exposure condition.

Exposure compensation allows you to fine tune your camera's metering system.

When you take a photo, the camera sets the shutter speed based on the aperture and metering system.

The metering system of a camera can be tricked under two types of conditions.

The first is in a scene with the majority of it being black. Good examples include a portraits where the subject wears black. The camera would over exposure this scene as the camera increases the exposure to make the scene neutral grey.

The second type of scene is with the majority of it is white. White wedding dresses often cause underexposure of the image as the camera tries to make it neutral grey.

Exposure compensation addresses this issue by forcing the camera to decrease or increase an exposure value (EV). +/-1 EV is one exposure stop (+/-). e.g. If EV0 (the default exposure calculated by the camera) is 1/20s, EV1 forces the exposure to be 1/10 (1-stop slower). On the opposite end EV-1 forces the exposure to be 1/40s (1-stop quicker).

On a recent trip to Jenolan caves, the default metering would result in overexposure. This is due to the white subject matter and the lights used to light a cave feature. To compensate, I set the exposure value to -2.0 EV, to compensate. The result is shown below.

EV0 the default camera exposure blows out all the detail in the minaret. EV of -2.0 preserves the detail and results in the correct exposure for the scene. 

TIP: Autofocus

There are two ways to engage the autofocus (AF) on a windows phone device. You can either:

1. Use the shutter release button. Press the shutter half-way. This will utilise the center AF area. Once on focus you will hear a beep to indicate that you can reframe your shot. The press down on the shutter button to take the shot.
2. Tap on the subject you want to focus on. This will cause the camera phone to utilise a smaller AF area. It also takes the shot once focusing is complete.

One thing I have noticed with the AF system is that the tap to autofocus is much less reliable than the shutter button method. Here are two shots taken at the same time. You can clearly see the difference.

Tap AF used to take this frame. The focus point was the eyes.

Center AF used to focus. Once focused the frame was composed and shot taken.

100% crops comparing the two AF modes.

Sometimes it is about the camera!

I obtained the yellow Nokia Lumia 920 as soon as it was released in Australia. Prior to this, I owned an Android based phone which at the time of purchasing was one of the phones with the highest mega pixels rating at 8 mega pixels. This was at a time when most phones were at 5 mega pixels.

Choosing a phone that can capture good quality photos is important to me. Because let's face it, sometimes it is about the camera!

My two main reasons: family and travelling.

 My phone doesn't just allow me to communicate with my family and friends. The visual quality and richness in my interactions through video-calling, MMS texting and posting photos to share is important. The ability to instantly share a moment is important.

I enjoy roadtrips and travelling. Being a solo traveller, I am mindful of the weight I carry around with me. For my recent trip, I purchased a point and shoot camera which has picture quality of a DSLR. While I do own a DSLR, I find that it is not always convenient to carry one around. My phone is always with me.

We have set a challenge for ourselves to bring forward the idea that Nokia Lumia 920 phone camera has a place in photography, mindful of it's limitations, but also it's place in everyday life. My focus is in the everyday life and how well I can marry up my interest in photography with the one item I carry around with me.

 These were the photos taken last night while walking around the Sydney foreshores.


Taken near my cousins place while walking on the boardwalk. I enjoy the drama in this photo.

Taken looking at the lights on the bridge as Sydney prepares for New Years Eve

Taken near Luna park. Looking at the Bridge and Opera House

 I did wonder when I took this shot whether a tripod for phones would ever become available!

Food and the Nokia Lumia 920

So by now we have seen how the Nokia Lumia 920 measures up against a SLR when it comes to landscape and High Definition Range (HDR) and also as a "point and shoot camera". But how does the Nokia Lumia 920 perform as a camera to capture food? As a lover of cooking and food I am a keen food photographer and have always used a SLR to capture these kind of shots. However, it is not always easy to carry a SLR around to restaurants or eateries. Most foodies or serious food bloggers will indeed use a SLR to capture their shots. This is because they want to capture the essence of a dish or ingredient and be artistic at the same time.

There are a couple of things needed to take good photographs of food:

1. The ability to get close to be able to capture enough detail to highlight the dish/food/ingredient.
2. An eye for detail and angle. What part of the dish is to be the star of the shot?
3. Depth of field.
4. Clarity, sharpness and correct colour output (blurry, discouloured pictures do not do justice to the dish/food/ingredient). The point of food photography is to entice the viewer to try the dish (eating or cooking it). This is clearly seen in most cooking magazines and cookbooks.

I have done some preliminary testing with the Nokia Lumia 920 to see if it can be used to photograph food. Below is an example (with more to come in future posts):

Homemade Vietnamese spring rolls with Nuc Nam dipping sauce.
 

The above shot was edited using the phone's autofix app. A vignette was also added using Thumba Photo Editor and the picture was cropped slightly. The shot is sharp, the colours are vibrant and the phone's F2.0 lens allows for a shallow depth of field showing enough detail to draw the viewer to the focus of the picture, the delicious, golden and crunchy spring roll.

The Nokia Lumia 920 therefore accomplished the mission of food photography = I want to eat the dish photographed!

More to come, stay tuned....

Controlling expectations - What the Lumia 920 cannot do well

The first entry for this blog set up my expectations for the Lumia 920. I expected it to perform better than a mobile phone to a point where it can challenge point and shoot cameras. The plus for me is the fact that you can take decent photos on a whim. I mean who doesn't carry their mobile phones around these days. It is perfect for the happy snapper, the impromptu moment or when you don't want to carry a digital SLR around.

Hints of this product targeting the casual shooter is apparent in Nokia's selection of features for the phone. The Lumia 920 features a 8.7 MP 1/3 inch sensor with a 26 mm (equivalent) F2.0 Carl Zeiss lens with optical stabilisation. This means for the normal person:

• Wide angle lens
• Fast lens for good low light performance
• Decent MP for printing photos. More than enough for facebook or sharing across the internet.

For a photographer is means:

• Fixed aperture (F2.0) will make controlling depth of field difficult. This would be very apparent for landscapes with an estimated hyperfocal length of 83 m! In other words, it would be difficult to take a landscape shot with all of the frame in focus
• Small sensor size, means more noise and artefact as we push longer exposure in low light
• Small MP and hence don't print any photos in large format.

Today I decided to see where the differences really lie between my digital SLR and the Lumia 920 in terms of landscape photography. More specifically, I wanted to see the how well each device performed for high dynamic range (HDR) landscape photography. Each device was allowed 3 shots of +/- 1 EV from regular exposure. Roughly the same landscape was framed the camera was secured on a tripod and a camera phone holder for the Lumia 920.

Photomatrix was used for the HDR produced by the digital SLR, while the HDR camera and Thumba was used to create the HDR effect for the Lumia. I should point out that the desktop tools for HDR photography is much more mature than the mobile equivalent. HDR camera at the time of publication is a very basic tool with no means to adjust the final merged image.

Comparing the sensor size. My trusty digital SLR has a huge advantage. The Lumia's sensor is a dwarf in comparison.

The first challenge for the Lumia was focus. With a fixed aperture of F2.0 where would you ask the camera phone to focus for all the frame to be 100% sharp? As mentioned above the hyperfocal length is 83 m, but this point may be some ripples on the horizon or tree branches swaying in the wind. It literally became a 'guessimate' for the 83 m on a feature that has enough contrast for the autofocus system to focus.

After 3 attempts, we were able to get this 'in focus' HDR.

Lumia 920 HDR at West Point. 3 exposures were used for the shot.

What you can see is good definition on the clouds and the capture is not too bad for a camera phone. There are some 'ghosting' since the HDR camera program did not compensate for foliage movement. The trees as a result have this artefact and lacked detail as the different exposures are used to create the HDR.

This image compares very poorly against my digital SLR and its HDR program photomatrix.

D200 HDR at West Point. 3 exposures were used for this shot.

Immediately you can see just how superior the digital SLR HDR is compared to the Lumia 920 HDR. There is more detail, less noise and things just pop out at you. This is due to a combination of things namely better HDR software, larger sensor and much better optics. Focus isn't an issue for a digital SLR since stopping down the aperture to F13 gave a hyperfocal length of only 2.4 m. This makes focusing to infinity much easier and contributed greatly to obtain the perfect shots first time and with minimum repeated attempts.

The astonishing difference can be seen in the detail captured between devices.

Side by side comparison of a digital SLR and Lumia 920 HDR.

It isn't surprising that the Lumia for landscapes lacks details in the capture. The sensor is only 5% of the size of a digital SLR sensor. Its resolving power would be considerably weaker. You can also see from this composite the noise is more apparent for the Lumia 920 picture. Again this is due to its small sensor.

Looking at purely resolving power now.

Night and day difference in terms of resolving power of the devices.

The 100% crops shows how much detail the digital SLR captured. You can clearly see the rocks and their definition. On the Lumia, these structures are just blobs. On reflection these results are not surprising at all. The digital SLR has a professional grade lens which is worth about 3-4X a Lumia 920s. The digital SLR camera isn't the latest and greatest, but does an amazing job on landscapes

So what does this all mean? Well in a few words, 'enjoy moments with the Lumia' but for serious photography nothing beats a digital SLR. This can be said for any camera phone, great for your snaps but there are limits. HDR landscape photography is one such limit.

The question begging to be asked is 'will revisions to the mobile HDR software improve the final output?' Most definitely it will, but only in terms of contrast and image saturation of colours. The lack of detail is purely the limitation of the phone's camera system and feature set.

I hope this entry will help readers get the most out of their camera phone. Knowing the strengths and weakness of a platform will improve the images capture on the device.

Ku-ring-gai Chase National Park - Bairne Track

The Ku-ring-gai Chase National Park is the second oldest park in Australia. It is situated north of Sydney and will take you about 40 mins drive to its front gate. It is a hidden gem of a park embedded in what is known as greater Sydney.

We only just discovered this park purely out of curiosity on our way to Palm Beach. What we found is a park full of amazing tracks that we would like to share with the readers.

Our first hike was an easy 4.1 km walk on the Bairne Track (one way). It was a typical day in Sydney, nice and sunny with a pleasant breeze to refresh us during the hike.



We were surprised that Nokia maps had the track marked. The Portuguese track leading to Coaster retreat was closed on the day. 

Some tips for this track, wear decent footwear. There are lots of rocks of varying sizes that can twist an ankle or cause you to fall on your 'buttocks'. Take plenty of water and wear sunscreen. The Australian sun is notorious, just ask any 'pom' on a Sunday at Manly beach.

The track is generally flat, with some small gradients but nothing difficult. It is a very long track so allow yourself about 3 hours including return. There was a lot of excellent flora of the Australian bush on this track. It really gave us the opportunity to do some macro work and get some excellent shots at very low angles.

This type of photography isn't possible when on the move with SLR gear. The freedom to position the shot independent of a viewfinder was very liberating. We ended the walk all tired, but pleased with the capture of the following shots!

I am not sure what this plant is, the colour and structure caught my eyes. Captured is a very delicate shot that typifies the subject well.
 

An Australian Bull ant. These guys are very aggressive and are not afraid of challenging you. The Lumia allowed us to take a very low angle to see that we were not the only ones out for a hike on that day.

The reverse angle, but boy did the ant looked pissed! Needless to say, we parted journeys shortly after this shot.

A simple composition to highlight the insect trails found on the bark of the trees during out hike.

At the end of the Bairne track is this spectacular view of the bays! This was captured using the panoramic lens on the Lumia 920.

The first few weeks with the Lumia 920

The Nokia Lumia 920 was launched in Australia on the 27 November 2012. This phone represented a huge leap in terms of camera phone features for a mobile. Nokia incorporated a 8.7 MP sensor with a Carl Zeiss lens and optical stabilisation. The blogosphere erupted with many commentators reviewing the product. Many saying that the camera performed very well in low light but not so well in daylight. They had photos to prove how soft and uninspiring the photos can be. A lot of this can be attributed to user error.

I am a photographer and have been taking landscapes and portraits for over 6 years. While the Lumia 920 will never replace an DSLR, it is my opinion that it will replace your point and shoot camera. It will be your day to day camera, the go to camera when you have no other options. So far this has proven true, rather than carrying 8 kg of gear. The phone is perfect for the opportunistic shooter. The site is a tribute to these moments.
Like all cameras knowing the limits and playing on the platform strengths makes a hell of a difference. Shutter lag, focus and metering are the weaknesses for the platform. But you can compensate for all these variables with some amazing results. Here are some of my initial work using the phone. The results speak for themselves.

Down at the rocks Sydney. Very impressed considering it was hand held and quite late at night.

A more controlled shot. This is amazing considering it was hand held.



Portrait of my nephew, the phone captured the moment perfectly.




Eating an ice cream.

I love ice cream. Taken hand held with the phone.