Old m42 lenses still is hot topic in DSLR video world, even tough information on them is all around, some if not the best is in languages like Russian, badly organized or simply wrong. some might ask why? mostly because m42 mount survived the longest in soviet union, and thus majority of lenses are soviet made. Majority of them if not all are based on Carl Zeiss designs, because at the end of the WWII Jena factory fell in to soviet hands and was moved with all documentation and machinery, and some say even workers too to Russia and begun producing the same products under different names and later continued the work started in that Jena factory. Continue reading Old M42 lenses – info, reviews, sample images
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
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?
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)
What camera to buy – this is one of the hardest questions there is. Mostly not that it is complicated, but because at the end that falls in matters of the taste. There are how ever some guidelines and some ideas that could help you or even confuse you. I’m not an authority in this, but I can elaborate why I have chosen 7D. Continue reading What camera to buy?