Tag Archives: exposure

Exposing and Using S-Log2 on the Sony A7s. Part One: Gamma and Exposure.

This document has been prepared independently of Sony. It is based on my own findings having used the camera and tested various exposure levels and methods. LUT’s to accompany this article can be found here. If you find this useful … Continue reading

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Major Update to my Cine-EI guide for the PMW-F55 and PMW-F5

I have just published a major update to my guide to Cine-EI on the PMW-F55 and F5. The guide now goes in to a lot more depth. I have tried to make it easy to understand but it is also … Continue reading

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LUT’s or LOOK’s when exposing via a LUT on the PMW-F5 or PMW-F55

First of all. You can use either, LUT’s or Looks. But there is a quite marked difference in the way they behave, especially if you use EI gain. At the native ISO there is little to choose between them. But … Continue reading

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Exposing via LUT’s with the PMW-F5 and PMW-F55.

There is an ongoing and much heated debate on another forum about the practicalities of using the LUT’s or Looks built in to the PMW-F5 and PMW-F55 for setting the correct exposure of your SLog or Raw footage. In response … Continue reading

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Cine-EI Mode when recording S-Log2/3 and raw on the F5 and F55.

INTRODUCTION: This guide to Cine-EI is based on my own experience with the Sony PMW-F5 and F55. There are other methods of using LUT’s and CineEI. The¬†method I describe below, to the best of my knowledge, follows standard industry practice … Continue reading

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Why gain is bad for your dynamic range.

One way to reduce the noise in a video camera image is to reduce the cameras gain. One way to increase the brightness of the image is to add gain. We all know that increasing the gain to lets say … Continue reading

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What’s the difference between Latitude and Dynamic Range?

These two words, latitude and dynamic range are often confused and are often used interchangeably. ¬†Sometimes they can be the same thing (although rare), sometimes they may be completely different. So what is the difference and why do you have … Continue reading

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S-Log, Latitude, Dynamic Range and EI S-log. Or how to modify your exposure range with EI S-Log

The big issue most people have when working with log and exposing mid grey at 38 is that when you look at it on a standard monitor without any lookup tables it looks underexposed. The assumption therefore is that it … Continue reading

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Setting Exposure with Standard Gammas – Use your judgement!

First take a long look at the image to the left. look at the 3 small grey boxes. What do you see? Is the middle of the three grey boxes brighter than the others? Does the bottom small grey box … Continue reading

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Exposing when shooting S-Log.

The question over whether to deliberately underexpose or not with S-Log came up recently. I believe that you need to evaluate the entire scene when shooting S-Log and that the often heard “underexpose by a stop” methodology may have some … Continue reading

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