#FUJIFILM LENS BIG APERTURE HOW TO#
#FUJIFILM LENS BIG APERTURE FULL#

Source: DIY Perks Price and availabilityĪs this is a DIY project, this kind of device is not being sold commercially, of course. Source: DIY Perks Sample – 35mm f/0.4 DIY lens. This whole system transforms this Episcope 432mm f/5 lens into a 35mm f/0.4 thanks to a crop factor (relative to full-frame) of 0.08x. I have to admit, I am very impressed by the resulting clips and the look of the shallow depth of field shots that Matt captured for the video. Matt used two threaded rods connected with a low-rpm motor and to be honest, it looks quite neat and seems to be working very well.įinally, to block unwanted light from entering the lens system from the side, Matt made a short bellow sleeve from black paper. The next improvement to the camera’s design was creating a mechanical focusing system to be able to precisely change the focus. Source: DIY Perks Building large format camera/lens. In the process of construction, Matt found out that the image on the diffusion sheet showed heavy vignetting, so he had to use two flat Fresnel lenses to direct the light rays towards the camera at the back. The sheet was then sandwiched between two pieces of acrylic glass. Photography diffusion sheet is the material Matt went with, as it has quite a fine structure and fitting characteristics for this purpose. The idea that Matt used for his project is to position a thin semi-transparent screen in the projection plane of the lens, and then capture the image on that screen from the other side with any camera. There are obviously no digital image sensors that could capture such a large image.

#FUJIFILM LENS BIG APERTURE HOW TO#

The challenge here is how to capture the whole image circle. For reference, modern large format cine lenses produce image circles with a diameter of around 46mm. This massive lens produces a huge image circle of around 500mm in diameter.

The lens that Matt used for his project is an old Episcope 432mm f/5 lens that was used in early projection devices to project a light bounced off of real objects. Episcope projection lens Vintage Episcope lens. Matt’s project works similarly, but his setup is a bit neater and more practical in my opinion. In fact, we already reported about a similar DIY project in 2018 when filmmaker Zev Hoover built a large format camera. The first option that uses larger projection circle (larger “sensor”) is more interesting, as there are many affordable vintage specialty lenses that allow for interesting results. There are also physical limitations – one of the fastest full-frame prime lenses ever made is the Carl Zeiss 50mm f/0.7 which is a very expensive piece of glass. There are faster lenses, but every stop faster than f/1.4 usually comes with a very high cost. Affordable reasonable standard are prime lenses with f/1.4 aperture on a full-frame sensor. Faster lens – The faster the lens is (or the lower the aperture value is), the shallower depth of field we can get.Because of how a lens works, a longer focal length lens (with the same aperture) produces shallower depth of field. Larger “sensor” – Larger sensor (or projection plane) allows us to use a longer focal length lens to reach the desired angle of view.If I simplify things a bit, there are basically two ways on how to (optically) reach a shallower depth of field with a given angle of view (and a fixed subject distance to the camera): Comparison against fake bokeh from a smartphone. Although a shallow depth of field alone does not guarantee a nice result, it is one of the tools that is supposed to help tell the story and make the images more appealing.

#FUJIFILM LENS BIG APERTURE FULL#

The chase for shallow depth of field that results in the blurry background full of bokeh and helps separate the subject and give the viewer a sense of depth has always been a part of the filmmaker’s (and of course photographer’s) life.

Fujifilm lens big aperture