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Showing posts with label technical. Show all posts
Showing posts with label technical. Show all posts

Friday, November 17, 2017

Why I shoot RAW and you should too even on a cellphone

Ever since we got the ability to shoot RAW on DSLR’s instead of JPEG’s there was an unnecessary debate among photographers whether to RAW or JPEG. The JPEG shooters called RAW shooters non photographers (because they did not make the photo in camera) and the RAW photographers called them other stuff.

I don’t care for the debate. You can shoot any format but there are real benefits of shooting in RAW even on a cell phone. Before I get there your first question would be - What’s a RAW image? My attempt to explain RAW for your cellphone RAW is a digital negative and that is quite important. Ya right that helps you are thinking. Bear with me it will take some time but it’s worth it. Before that a bit of technical stuff, I promise to keep it short and simple. When you launch your camera app - your cellphone camera captures light information in three channels Red, Blue and Green (Three primary colours). Then this light information goes into your camera application and it processes. Then there is another filter which gets activated - where the camera will try and make the image look as close to reality as it thinks fit. Let's call this the computer JPEG filter. If you are shooting manually then you are creating this filter.

When you see the photo on your phone screen you see it with the JPEG filter. Normally camera manufactures will try to put the default setting as close to reality as possible. This filter at this point will then throw away some light information based on its programming. (Basically, the camera determined that this light information is not important. Don't panic in most cases it’s okay.)

Then you hit the click button on the application and this information is compressed into a small file and stored. When this compression happens some more light information is thrown away. Then you look at the image and think hmm maybe I should add my favourite camera filter on top of this!!! The camera application does this and throws away some more light information. But when you shoot raw, none of the light information is lost. This file is called RAW, because, well it's the RAW light information. Then depending on the camera application, a small settings file may be created along with this RAW file. It will contain information about all the settings the camera applied. When you access this photo in the camera application the app will apply these all the setting and show you the image. Some applications will show you the photo without the filer as well. Alternatively some camera applications will store both a JPEG and a RAW image. The RAW image file usually have an extension called DNG (short for Digital Negative). The file stored also has no loss due to compression. Now you know why RAW is important especially if you like to edit your photos. The more information you have the bigger latitude you have to make edits. If we were to think of this like stitching a cloth. This extra information is like having more cloth material to make something. If you were making a full sleeve shirt and you have only 1.5 m of cloth and a tall person comes for a shirt and you need 2 m…. well it’s not getting made. You may make a beautiful half sleeve shirt but it’s not going to be a full sleeves shirt. But if a normal person came that 1.5 m may be enough. Sometimes you may need more light information in editing and in other cases you may not. But having that extra bit helps.

Here is the down side - there is a cost. Just like keeping 2 m of cloth means more space and more weight RAW files are significantly bigger than JPEG’s. If your phone has limited space then you are going to run out of space very fast compared to shooting with JPEG. So what does the difference look like in real life? Here’s an example below are

The image below was made using a cellphone camera. This is close to what the camera captured.

 Then I pulled this photo into my editing application Lightroom desktop. You can use Snapseed or Lightroom on the cellphone for this kind of work and the RAW image looked like this. It will look washed out


You can see what from the above image that your camera is adding some filter even before you see the image. Then I carried out some edits and it ended up looking like what you see below which is closer to what I saw with my eyes. In fact if you see the background as white in the image below but the in the first image the background is a bit grey. When I tried to get to this image when I clicked it I lost a bit of detail in the earrings.
If I had clicked the image in black and white also with the RAW settings I could have created the above image as black and white is a filter. If fact I can make two different looking Black and White images based on the way I edit.


I personally shoot only RAW even on my phone... well except when I run out of space which is quite common. Let me know what you guys think about RAW and how you would use it by adding you comments below.







Saturday, October 7, 2017

Making the most of technology

Recently I came across this short film, 9 mins 21 sec to be precise about a super-hero. While the movie drew me into it I was really fascinated by what was happening behind the scenes

Here is the link to the movie. Enjoy. Once you are done seeing it head over the bottom where I have where you will find the video to the behind the scenes.




Damm was that movie intense even if was for just 9 mins and 21 sec. Lets jump into the videos which the produces have shared






The Car Scene
The situation is simple two guys travelling in a car. However, if one was to make this on the busy streets you would require permits and have the street locked down while you make the film. Not only is that more difficult it is also very expensive. Then you would require really large equipment in terms of lighting and camera's just to shoot the video. 

The lighting equipment is required to put consistent light on the characters face and special stabilisation is required to get steady footage of for the film. When it comes to film making even if you drive on simple road it is really bumpy so the camera shakes beyond control which does not make for great viewing. Hence all the stabilisation equipment which is fixed to the car or a trolley so on and so forth.

The Hospital Scene 
This is one of my favourites, because this is working with minimum things and making magic happen. The behind the scene shows a room which is a normal living room which is transformed into a hospital room. The solution was very simple, move things out, put a hospital bed in the location and then use colour grading which is playing with white balance and swapping a few colours to change the mood of the scene. 

View Outside the Window
This is fully CG.They are doing what is known as composite, where they are layering many things into a single scene.

Here is the link to the Facebook page of the movie www.facebook.com/TFMshort/

Let me know what you think, what did you see or if you found something interesting yourself share it by adding it in the comments.