ISO Invariance

This week I am going to show you what ISO invariance is and why you need to know about it to get better photos. Click on the image above to watch the video. Downloadable images If you’re looking for the downloadable images to see for yourself, Click here It is a dropbox file with three folders. 2 images from the canon test, 2 images from the A7iii test and then the two images below (full res Jpegs) ISO In layman terms, ISO is basically how sensitive the sensor is to light. It is a standard set worldwide by the international standards organisation, hence the name, and it refers to the voltage that runs across the sensor. Technically; the higher the ISO figure, the higher the voltage running across the sensor and therefore the higher the amplification of the signal. Invariance Invariance basically means that there is no change. So ISO invariance means no change no matter what the ISO is. What this means In terms of cameras and their sensors, the main thing that is affected by ISO is noise… in theory a camera with ISO invariance will produce the same image with a low ISO as a high ISO […]

Read More
Don’t buy a variable ND filter if you’re a photographer

Don’t buy a variable ND filter if you’re a photographer I’ve got many different types of ND filters, from circular filters right through to soft grads and had grads on a special bracket. However when I first wanted a filter, I looked at and thought a variable ND filter would be great all in one solution. Little did I know that this really isn’t the case…. An ND filter is basically like sunglasses for your camera. There are many different types and after years of spending, I have a lot of different types. The first one I started on was a variable ND filter…..after a lot of research, it seemed like the ultimate solution to carry one slightly bigger filter around instead of a whole stack of them, as it covers everything from a 1 stop to a 10 stop and beyond! Normal ND filters are darkened bits of glass that are balanced so they don’t throw a colourcast on your image. You can get everything from a slight drop in light to a huge drop in light. Variable ND filters are different in that they have two bits of glass in them. As you rotate the outer ring, the amount of […]

Read More
How your composition can trick your light meter

This week I’ll show you how your composition can trick your light meter The light meter in your camera is a sophisticated bit of kit. It has a few different settings and each one has it’s own uses but most people will keep it in the multi meter mode. In this setting, sometimes your composition can trick this into producing a bad image. Basically, the light meter will look at the whole image and try to give you a good exposure. When there is a lot of dark parts in the image, the light meter will brighten it up and when there is a lot of bright areas in the image, the light meter will drop the exposure down. This is all well and good, but when the subject is darker than the surrounding parts of the image, it will tend to be under exposed. On the other hand, if the subject is surrounded by a lot of dark parts, it will tend to be over exposed. There are a few ways to counteract this, depending on what setting you are in. Generally, if you are shooting in Auto mode, everything is automatic, so you won’t be able to compensate […]

Read More
Customising Your Sony Camera
November 2, 2017 by Mike in Camera setup, How to 0 Comments

Customising Your Sony Camera (A7 and RX10) This is aplicable to the sony a7ii, a7sii, a7rii and the rx10iii. (for the RX10iii scroll down past the A7 settings to the RX10iii section) I’m I suppose what you’d call a hybrid shooter. I shoot both video and photographs, so I’ve come up with the following setup for my camera to make it as easy as possible. The Sony menu system is one of those anomalies in the world where common sense seems to have been thrown out the window, however, it doesn’t have to be all that bad. Now this isn’t an in-depth guide on the menus, there are tonnes of those of youtube. This is just a quick setup of the essentials to get the things I use in a place where I can access them quickly and efficiently. There are basically three different customisable areas:   A7Sii Dials So the main settings you want access to are ISO, aperture and shutter speed. On the A7 cameras you have three dials, so it make sense to put these three settings on these dials. ISO on back dial, Shutter on back top dial and aperture on front finger dial.   On […]

Read More
Back to Top