Showing posts with label February 12. Show all posts
Showing posts with label February 12. Show all posts

Monday, February 13, 2017

What’s New in OSMO+?

OSMO+

I got my OSMO+ during the Mid-Autumn Festival. As an updated version of OSMO, DJI states that OSMO+ is more powerful in its imaging system, enabling you to take motion timelapse and detailed panorama up to 7x zoom. I was eager to have a go when I got it.

I. Motion Timelapse
Motion Timelapse

You can frequently hear different kinds of clacking sounds in Hong Kong, such as the traffic light tick and ferry boarding alert.
Motion Timelapse

Life in Hong Kong is really fast-paced and people there are always in a hurry, like walking in a giant clock.

It only takes two steps to shot a motion timelapse.

1. Fix the camera:
Fix the camera

Mount the OSMO+ on a tripod (the expansion port is compatible with all OSMO accessories). I personally use an octopus style tripod which is easy to be fastened onto handrails or railings.

2. Set time and movement points:
Set time and movement points

Shooting time: follow the instructions in DJI GO APP.

Movement Points: it is the main difference between OSMO and OSMO + in motion timelapse. OSMO+ can automatically create phenomenal moving timelapses after you mark where the camera starts and ends, in which way I have shot the overcrowded street in Hong Kong. Whereas OSMO can only achieve the same effects with additional equipment such as the pulleys on the tripod to enable flexible movement. With OSMO+, you only have to mark the movement points in DJI GO APP and watch the camera moving automatically and shooting a complete video.

I went to Hong Kong on the Mid-Autumn Festival Day. The Symphony of Lights show was staged on both sides of the Victoria Harbour with swarms of people standing by the harbour watching the performance. The dazzling lights suddenly took the depressive look off the crowed buildings. Most viewers were tourists like me. Coming from different places, we were drawn there together by the spectacular show to spend the festival.

II. Zoom

You must be familiar with this scene if you often watch the Hong Kong gangster movies. Well, this is just a taste shot by me. The color correction makes for its cinematic effect.

Zoom in to shoot the signboards on the other side in the night.

A 7× zoom, consisting of 3.5× optical and 2× digital lossless zoom, gives OSMO+ a focal length ranging from 22mm to 77mm without sacrificing HD quality. Just press and hold the Trigger and push the Joystick up and down to zoom in and out or simply tap the Zoom Button (tap T to zoom in and W to zoom out) in the DJI GO APP on your phone. I tried several times to zoom while shooting. It takes a while before you can flexibly zoom in or out through the Joystick. Otherwise you can just tap the Zoom Button in the DJI GO APP to acquire smoother footage.

The focus will be locked automatically after you change the focal length. However, you are likely to get a blurry image due to unclear focus. In the zoomed photo below, the letter ‘SOC’ can be seen indistinctly among the buildings.
OSMO+.png

I have been happy with the zoom feature and I would recommend you to try it.

Be sure to zoom before shooting. For example, before shooting videos or photos by a ship, you can eliminate the ship body’s dominance in the image and tighten the composition by zooming in. Be noted that the zoom feature is not available for timelapse or panorama shooting.

For professional photography and videography, try not to zoom during the shooting process. OSMO+ can shoot 4k videos at 30fps, 1080p 4-fold slow motion videos and 12 megapixel photos. In this case, you can adjust the zoom through post-production with no issue.

Remember that zoom before shooting is like a “once-for-all” deal, which means that you can hardly retouch the images unless the objects are properly focused.

III. Detailed Panorama

Some people doubt whether the detailed panorama function is necessary when you can get a wider view by stepping back. Well, the following pictures will justify this function.
Detailed Panorama

I can never shoot such a photo by just stepping back.

Tolerable distortion can be seen at the edge of the photo, yet it also gives an enormous impact on the image. Just click the Panorama, the gimbal will rotate automatically to shoot 9 separate photos which will be blended together into one stunning photo. Due to high light ratio, it is advisable to compensate the clarity and contrast level for the shade part lack of perceived detail in DJI GO APP. (See the retouched photo as below)
Detailed Panorama

Sometimes the panorama feature can bring you unexpected results, such as a crowded street with people coming and going:
Detailed Panorama

(Photo by post-production) Several people’s legs disappear! You can also try some interesting and creative composition next time. The results are not always so weird:
Detailed Panorama

This is the original shot. OSMO+ performs well in night scene shooting.

Suggestions

As an updated version, OSMO+ is more powerful than OSMO. If you are looking for an ideal handheld gimbal camera, OSMO+ will not let you down, meeting your demands of professional shooting and social media sharing.

The main differences between OSMO+ and OSMO are listed as below:

Motion Timelapse: the ‘motion’ function can free you from troublesome steps to take a timelapse, just mark where you want the camera to start and end, tap ‘Start’ to create phenomenal moving timelapses without additional specialist equipment.

Zoom and Detailed Panorama: it means more flexible composition and more shooting scenes for OSMO+, giving full display to your creativity.

Longer Battery Duration: I used two batteries in a day. From 11:00am, I have been shooting all kinds of images I encountered, such as the advertising boards, street foods, beautiful girls and HK trams all the time. Till 9:00pm when I was taking a timelapse, my second battery still had over 50% power left.

Meanwhile, the newly added functions also have some bugs, such as less-than-ideal focusing and moving focus. We expect that DJI will fix these bugs in its firmware updates.

If you are struggling to choose one from the OSMO series, you can refer to our previous OSMO Mobile assessment which includes detailed comparison and suggestions on the three products.

The post What’s New in OSMO+? appeared first on Drone Inner.

Sunday, February 12, 2017

Inspire 2 Review- single/dual battery and flight time

Inspire 2

Unlike Inspire 1 provides two kind of batteries to choose (TB47—4500mAh,TB48-5700mAh), Inspire 2 is equipped with only TB50—4280mAh. But with other improvements, Inspire 2 can fly longer. Above is our review video on flight time.(In review video: temperature- 20°C, altitude- 300m, breeze. Aircraft in GPS Mode, taking off with 95% battery)

X4S

GPS Mode is frequently used in actual practice, so we use it for tests, too.

First, we mounted X4S(which weighed 235g). Taking off with battery level of 95%, Inspire 2 flied 22min 5 sec in GPS Mode. It landed automatically when iPad showed 10% battery left.
Inspire 2 test

Official 27 minutes could be tested without wind and other interferences, and with most functions shut down.

We tried again with X4S and 100% battery.
Inspire 2 test

We kept it in GPS Mode, ignore the low battery warning. When the battery run off completely, Inspire 2 stayed in air for several seconds before falling down to ground. With wind Final flight time is 25min 35sec
Inspire 2 test

X5S

Then we tried X5S (weighed 461g). Inspire 2 took off with battery level being 97%. 19min 33sec later Inspire 2 landed as iPad warned 10% battery left.
Inspire 2 test

Flight Time with One Battery

This time we only put one battery on Inspire 2 (with x5S gimbal camera). The aircraft kept in GPS Mode throughout test.  It landed automatically 13min 26sec later with 10% battery left. We tried many times, the average flight time is 13min 30sec.
Inspire 2 test

Conclusion:

Inspire 2 costs more, and becomes heavier to carry around. But when you think of flight time, it is quite powerful if you want to get the work done.

When I was trying to capture some moments, low battery warning pops out very soon. It always upsets me.

Now Inspire 2 is much better performance in terms of flight time. Dual-battery design also improves reliability during flight.

The post Inspire 2 Review- single/dual battery and flight time appeared first on Drone Inner.

Inspire 2 review series- testing upward/downward vision

Inspire 2

Today we are discussing Inspire 2’s protection feature in landing and upward obstacle avoidance.

Downward sensor would recognize ground texture for a safe landing spot during auto landing, Return to Home or when the battery level is very low.

Upward facing infrared sensors help to sense obstacles above. Check this video to see how it works:

Downward vision

We took off at waterside, and tried to land on water.
Downward vision

The drone would lower down slowly and stretch its landing gear, now obstacle avoidance system is shut down.
Inspire 2 display

When the altitude drops to 4.3m, the app would warn it’s not sutable for landing. Now Inspire 2 would keep hovering, and landing gear would retract again.
Inspire 2 display

Not only in case of water surface, the warning would pop out when there are branches, stairs or in balcony.

We are going to have very violent test: try to land it on a man’s head.
landing on a man

Well, the app also reminds us it’s not suitable for landing.

In summary:

We can find out though these tests that: Inspire 2 not only knows the height (calculated by downward visual sensor, ultrasonic sensor, barometer and GPS), it can also detect the situation of landing spot to see whether it’s safe to land on.
Inspire 2 display

Otherwise the app will remind you it’s not suitable for landing, and the aircraft will hover and extend its landing gear:

There is a bug though. If the bushes are trimmed tightly, Inspire 2 will go on landing. By the way, Phantom 4 Pro also has the feature, making it much safer for users.

Upward facing infrared sensors

Inspire 2 can scan for obstacles above with infrared sensors on its top, which is really friendly for beginners.

We have tested this feature in many scenarios, the infrared sensors have showed different performance while the obstacles are different.

As picture below shows, there were a lot of colorful umbrellas above. Since there are huge gaps between umbrellas and sunlight was coming through, the infrared sensors didn’t recognize these umbrellas as obstacles.
inspire 2 test

We tested again under a plastic canopy around sunset time. This time infrared sensors worked quite fine. DJI Go app warned obstacles above. No matter how you operate the joystick, Inspire 2 hovered there.
inspire test

In summary, upward facing infrared sensors have good performance when the obstacle has smooth surface and enough light. Comparatively speaking, infrared technology is not as precise as dual-vision sensors.

We’d still like to remind you keep safe in narrow spaces. We hope to see “more eyes” on Inspire 3, 4, 5, like these:

Inspire 2
Inspire 2

The post Inspire 2 review series- testing upward/downward vision appeared first on Drone Inner.