Search the Community
Showing results for tags 'asa'.
Found 8 results
I wrote a little bit about the process of pushing the ARRI Alexa to 2500 ASA for “Made in Oslo” which is competing for the Golden Nymph at the Monte-Carlo Television Festival next month. Thought some might find it interesting. http://johnerling.no/blog/2022/5/6/kg63lcplguxcirlpbxu5se2p0lffdm
Difference between EI and ASA/ISO?
Connor Adam posted a topic in Film Stocks & ProcessingHey, I was reading through Kodak's 'The Essential Reference Guide for Filmmakers' and came across the following: A word about film speeds You probably know that motion picture films use exposure index (EI) to indicate speed. Although similar, EI is not the same as the ASA or ISO speed used for still films. EI denotes a somewhat conservative figure related to the higher quality requirements of motion picture film that must be projected onto a large screen. Typically the EI speed is about one stop lower than ASA or ISO. EI 500 film, therefore, is the equivalent of ASA/ISO 1000. Is anyone able to develop further on this? It is the first time I've come across the concept that EI is not the same as ISO. If I take what is written literally, does this mean that I should be setting my light meter to read at 500 instead of 250 (assuming I am shooting on say 250D stock) to get correct exposure? All the best, Connor
New in Super8 world, help please!!
Guest posted a topic in Students and New FilmmakersHi everyone, First of all, my name is Zranfisco, and I’m new in this world. A few days ago I found my grandfather’s old super 8 camera (a Yashica super 825), and I have not idea of how to use it, what cartridge I have to buy and things like that. So I was looking for information in internet when I reached to your forum, and I think that I could find the help that I need, I want to be a regular super 8 user. For example, I have already found the Wein Cell’s battery that substitutes old mercury 1.3V batteries. I think that my most important question is: What cartridges I can use? The camera was with a Kodachrome 40D, but internet say’s that now is impossible to process it. Thank you PD: more information about the camera YASHICA SUPER-825 -marketed in 1969-70 -silent super 8 cartridge -lens: Yashinon Zoom f: 1.8 \ F: 12-30 mm -zooming ratio: 2.5x -focusing: fixed -zooming: manual -filter size: 43 mm -viewfinder: single-lens reflex with adjustable eyepiece -viewfinder information: f/stop meter -exposure: auto exposure control; TTL EE, CdS photocell -EE lock: yes -film speed: auto for 25/40 and 100/160 ASA (daylight/tungsten) -CCA filter: built-in 85A filter; with filter switch; automatic cancelation with dylight cartridge or with -----filter key -filming speed: 18 fps -shutter opening angle: <180 degrees -sound: no -remote control socket: no -cable release socket: no -movie light socket: kodak type -film counter: 1-15 m -handle: retractable, chamber for penlight batteries -battery check button: yes -film drive motor: DC micromotor -power source: 4 x AA batteries \ 1 x 1.3V button cell for light meter -weight: circa 1000 g -dimensions: 55 x 125 x 195 mm \ 55 x 230 x 195 mm -tripod socket: 1/4" -made in Japan by Cosina Source: http://www.filmkorn.org/super8data/database/cameras_list/cameras_yashica/cameras_yashica.htm
Canon 814 XL Manual Exposure
Zacary Caine posted a topic in Super-8Hello I recently picked up a Canon 814 XL and I have many questions about film speed and manual exposure. To start, Most of the time I'm going to be using Kodak film stock. 50D 200T 500T I understand these are ASA speeds correct? I read my cameras manual and i noticed that it does not read any of these film speeds. Artificial - 25 40 64 100 160 250 400 Daylight - 16 25 40 64 100 160 250 My question is, What will my camera read it as then? What does this mean for my auto exposure and manual exposure? I've read some things in these forums about over exposing manually or underexposing, if thats the case, how do i go about doing that? If someone could explain f-stops to me, or refer me to a video or something that would be great! I've seen a few videos on the subject but I'm still a little confused how f-stops and film speed coincide, and how to underexpose and overexpose, things like that. Another question. I've read about a notch hack that you can do to the Tungsten stocks to disable the filter. My question is, Why would you want to do a notch hack on a Tungsten stock when the internal filter corrects it for you?
Asa Rating of Digital Camera
Matthew Levi Rowley posted a topic in Camera OperatingCould someone walk me through the process of rating the Asa of a digital camera?
How is rating ISO at 800 underexposing vs rating at 320?
Jeff Hammond posted a topic in RedI've been researching the native ISO of RED cameras (primarily the Dragon and MX). What's been confusing isn't the notion of a native ISO, but rather that in the debate between 320 and 800, people are referring to shooting at ISO 800 as underexposing when compared to ISO 320. From one such individual: "At 320 (which may be closer to the sensors "native" sensitivity- or the point where the raw matches the redcolor as far as middle grey) you have much less range in the highlights. By rating 800, you are underexposing the sensor a bit and protecting the highlights." Bear with me as I'm more of a lighting guy, but my question is: how is it that by increasing ISO by 1⅓ stops are you underexposing the sensor? What am I missing? Thanks so much for your help!
What Kubrick could be doing with today's cameras
Adriano Ven posted a topic in General DiscussionI just watched this video and tought about the story on Kubrick and the candlelit scenes on "Barry Lyndon". What would he be doing with today's cameras and lenses? Of course cinematographers aren't using f0.7 lenses on day to day basis but, for example, Master Primes and Cooke 5 are pretty bright and camera ISO technology are advancing everyday. With a camera capable of a base ISO 5000 and a Master Prime on T1.3 candlelit scenes would be just the start on the cinematography crative process. What do you think?
I recently purchased a reloadable super-8 cartridge from Wittner and I'm extremely confused about where to cut the ASA notch. I bought the CHROME 200D film which is Daylight: 200 and Tungsten: 50. Please could someone tell me where to cut the notches for this stock? Or somewhere said something about not needing notches for daylight film? Im very confused. I have been trying to use this guide: http://peaceman.de.www127.your-server.de/schmalfilm/super8/S8_Notch_Tools_v1.0.pdf But I'm struggling. Please could someone tell which notch to cut to on this guide? Thank you! -Harry