Category Archives: Photography

Deflickering time lapse

When ever we shoot time lapses we always go to manual mode, yet it is not always possible. Especially with the holy grail of time lapse – sunset / sunrise. Delfickering time lapse is the hard part. Such time lapses are the most tempting ones, and also technically cumbersome, almost, because there is a twist.

You have to shoot them them in one of the 4 ways, manual exposure (you control the shutter speed), Av priority automatic exposure (camera controls the shutter), bulb ramping (intervalometer changes the exposure by a set curve or keyframes) or the last, and my favorite, auto ETTR if ML. Problem is tough, as I mentioned earlier is that all of them require deflickering, either manually for the first option or other ways for the rest of them. Continue reading Deflickering time lapse

Dual ISO from Magic Lantern, supertool really?

UPDATE: after noticing that actually some people read my articles, I’ve decided to update and extend ones of interest, this one has been the most popular.

I have mentioned in my previous posts of an beast called Dual ISO, but never really explained what is, its benefits and cons, and how to deal with it.

It is a nice feature in ML hack – in essence it gives you a picture that contains exposure in two different ISO.  How it can be? Simply because the sensor is not set to particular ISO, it’s read with a certain gain to achieve the desired ISO, and then converted in ADC to actual pixel brightness values (I simplified, but in essence it is like that). ML then have every other line read in different ISOs, back and forth. And here the trouble starts – you lose vertical resolution – because when you combine those lines they are considered as HDR  pair and saved into a DNG raw file. There are more problems but on that later, below. Continue reading Dual ISO from Magic Lantern, supertool really?

Understanding Exposure To The Right (ETTR)

I stumbled on the Automatic Exposure To The Right – ETTR when I wanted to have bulb ramping feature of Magic Lantern and could not find in my 7D build. Bulb ramping was replaced with the conjunction of those two to give even better result. How nice of them, tough if somebody would have explained how to use it in real life. I had to spend couple days in ML forums and had to do some tests to understand how those features actually work. and when you add the dual_iso to the mix it gets very complicated at first. Continue reading Understanding Exposure To The Right (ETTR)

Time lapse tips

For some time I have been doing time lapses, and failed quite often – tough you learn from your mistakes. Sometimes pure chance can give nice results, but mostly it is your effort, and doing it again, and again till it’s perfect. Don’t drop the hope after first failures, sometimes result is so so rewarding at the end. Like getting two nice meteorite strikes I had captured – Lyrids continued. I would like to share some time lapse tips I have learned.

So here are some tips and / or typical errors to avoid. most of them are trivial and I hope you never do them, as I have 😉 Continue reading Time lapse tips

Magic Lantern on 7D

So finally I have done what I should have for quite some time – join the Magic Lantern (ML) craze of turning your already complicated peace of gear in to more complicated one ;). For those who don’t know what it is – it is a hack for Canon DSLR’s involving a hack in firmware to make it try to load an application form memory card, witch in turn enables all the bells and whistles you can think of. Ok there are some limits, but those are by the hardware not software. Continue reading Magic Lantern on 7D

Lyrids continued

Still being cross of our failure to capture any decent Lyrids meteorite action (read it here: Lyrids), we went out again. This time not because of the meteorites, but because of a view I saw on the way back home – that was a windless night, so water in the river Daugava was still like mirror, and you could see stars reflecting, such a nice view. But I was cold, angry, tired so I could not make my self unpack and get the picture.

Continue reading Lyrids continued