noise

Quick test: Noise on Nex-7 video

I tried to find out what the impact of the ISO on video on the Nex-7, so I cycled through with the lens cap on. The noise was not that visible so I tried to do what you usually try to avoid. I added brightness and sharpening.

Let me know, what you think. For me it prooves my experiences, that videos start get noisy with ISO bigger than 800.

Composite

Proof of concept: Compositing video in Motion 5

When the weather is not that good outside, what do you do? I decided to play around with a snippet of video and try out some compositing with video.

What did I try? I wanted a piece of text to move with something in the background and vanish behind a piece of foreground.

So what did I learn?

  • Next time I use only stabilized imagery – the handheld footage is good enough for the poc (proof of concept).
  • I have to work on the 3d-text effect, it still has its problems.
  • I have to work on the synchronisation of the movement of background and foreground.

But enough talk – here is the video. I’ll be outside….

Sigma 30mm f/2.8 EX DN

Review of Sigma 30mm f/2.8 EX DN Sharpness

So I made some further observations after the first review yesterday. I also got a message telling me that other and more detailed shots are needed to see. So here we go. Below you will find the corner and center crops from shots I took today in the morning. The shots were made handheld and the ISO was limited to 100. First the center shots of a street scene using apertures 2.8, 4 and 8 As you can see, the center gets sharper at f/4 to soften up at f/8. Next you will see the details in the upper right corner. As you can notice there is a slight purple fringing which gets softer when the lens is stepped down. Strangely enough the shot at f/4 is not sharp. I think the branch has moved in the wind, but the wall looks sharper.You can find the full SOOC shots here. As a conclusion I have to say, that for me the lens is very fine wide open. I haven’t considered if I prefer f/8 or f/16 for my night cityscapes. What still is strange to me is that the lens falls in to a resting position when turned off with a hearable soft *tock*. What I have not tested by now is the fact, that the lens seems to take long to “boot” – the Iris is closed and opens wide only to get stepped into positions. I will save this for the next blog entry. If you have questions you can also leave a comment. @Edit20120420: A reader mentioned that he thinks the blurriness at f/4 in the corner could be due to the exhaust of the truck you see. This sounds reasonable as everything is a little bit blurry in that corner.

DSC00322-Bearbeitet

Quick review of the Sigma 30mm 1:2.8 EX DN for Sony Nex E-Mount

When I first took it out of the packaging I thought it was broken. But the lens element is not fixed if the lens is not “on”, aperture is closed.

Size is smaller than the 18-55 kit lens, I would say it is as if someone cut the kit lens between zoom and focus ring. Build quality is high and solid plastics. It feels good and I like the smooth focus ring. I tried some shots, could not find any odd things. I doscovered some very soft magenta streaks in very high dynamic regions when pixelpeeping. Concerning the quality I would say that this is a no-brainer for Euro 199,-.

For those of you who like pixelpeeping I have some testshots in f/2.8, f/4 and f/8 at my ge.tt acount, for all the others: A wallpaper in Full-HD.

Image

A very creative silversmith was working here...

Three wise monkeys

The three wise monkeys are a nice pictorial maxim. 見ざる, 聞かざる, 言わざる which literally means “don’t see, don’t hear, don’t speak”. It got a negative connotation in the western world.

I really like the old interpretation.

Look not at what is contrary to propriety; listen not to what is contrary to propriety; speak not what is contrary to propriety; make no movement which is contrary to propriety.

It does not have this negative touch, if you see propriety in the eye of the beholder.

Find a “Three Monkeys” wallpaper in Full-HD (1920×1080) here:

A very creative silversmith was working here...

Edit 1: There are pictograms of the three monkeys in unicode! See page 2 in the right column middle section.

2percent

Number of the day: 2%

I love parcels. This does not mean that I do not understand all the packaging. I ordered the Upgrade to Adobe Lightroom 4, which is a great piece of software by the way.

As much it was fun to get the CD out of the box out of the box out of the box, there is the one question remaining: Why use so much air to package such a great product, where a nice small package with the serial number would be more than enough?

2% are not packaging air

It is not what you see…

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