Eyes of Lenses // Edition #8

EOL Title Card First assessment. Finally surpassed and done.
With the second one coming up later on today, the blog won't be that jammed-packed with goodies - in fact, it won't be filled with anything else, apart from this small part below, discussing how I stumbled upon T-stops.


What I have discovered and come down to concluding is that Transmission Stops are a small secondary factor when it comes to exposing your image, that and there is a primary difference between photographic and cinema lenses.

More specificially, T-stops come into play straight after you adjust your aperture. After that happens, light that hits and goes through the lens has to make its way to the sensor is subject to it being partially lost. In one video example that I found - a person had said that variable zoom lenses (e.g. 75mm --> 200mm) had more of a chance losing the amount of potential light going through the lens and hitting the sensor.

What I also drew, from the same video, was that cinema lenses are made with T-stops in mind, and end up being more expensive than standard photographic lenses by a gap of thousands of dollars. But it is understandable on why however, and it's not just the fact that they are specially designed to minimize the risk of looking light coming in, but also for the fact that since the aperture, zoom and focus rings are bigger in diameter - meaning that more precise adjustments can be made.

Cinema lenses are considerably larger beasts to deal with though.

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