[Film Photography] ARE FILMS TRUE TO SPEED? What you need to know about box speeds
HTML-код
- Опубликовано: 3 авг 2024
- This videos contains five convenient things I do to gauge the true speed of a black and white film before I decide what EI to rate the film at. No testing involved.
Find me on Instagram: / _bjiao__
Specifically, this video covers:
01:37 What the box speed really means
02:28 Nominal ISO on datasheets
03:30 ISO determination methods
05:06 ISO-development time curves
05:56 Characteristic curves with simple calculations
10:18 Recommended pushing and pulling times
Watch also:
[Film Photography] PUSHING FP4+ to 200 and higher with Kodak D76 | How to push film at home | London: • [Film Photography] PUS...
[Great Photographers] Learn from Ansel Adams: Visionary Beyond Zones: • [Great Photographers] ...
Read also (from my photography blog):
[Pho.Snap] Definitive Guide to Pushing/Pulling C-41 and b&w Film: www.belindajiao.com/blog/push...
[Pho.Snap] What you Need to Know About Film Grain: www.belindajiao.com/blog/film...
[Pho.Snap] What Does a Good Film Negative Look Like?: www.belindajiao.com/blog/good...
Shop:
My Heavy-Duty Tripod - Manfrotto Before GT XPRO Carbon Fibre Travel Tripod with Ball Head: amzn.to/2FTDeZS
Phottix Kali150 Studio LED: amzn.to/3eUtYn8
Rode VideoMicro Compact On-Camera Microphone with Rycote Lyre Shock Mount: amzn.to/2QFHv88
WD 4 TB External disc: amzn.to/3eaRVWN
WD 1 TB External disc: amzn.to/3gRFssw
Adobe Photography Plan (Photoshop, Lightroom, Premier Rush, Bridge, Creative Cloud): clk.tradedoubler.com/click?p=...
Background Music “Solstice” by Lofee via Soundcloud, available here: / solstice
DISCLAIMER: This description contain affiliate links. If you purchase a product or service with the links included, I may receive a small commission at no additional charge to you! Thank you for your continuous support, making it possible for me to create content consistently for you all. 
Кино
![[Camera & Gear] I shot on the Olympus XA for 6 months - Here is what I learnt | Everyday film camera](http://i.ytimg.com/vi/hRq8ZvhCHNg/mqdefault.jpg)
Woow. You are into technology. My head is spinning. So much curves and figures.
I really love this video. I've always wanted to know more about this topic. I usually shoot HP5+ at 400 or 1600. I use ilford ddx and adjust the dev time according to the chart on the inside of the box. Ilford is such a great company to work with as a diy amateur photographer. For color I just shoot at box speed because I use a lab for developing color film.
Bret, yes I find Ilford to be be quite user friendly in many aspects. You know, you can still develop the same with your lab but shoot overexposed; would just cost you the same
Great information. Really nice sweater, too.
Hi Belinda. Intense session!
Well done.
Cheers Belinda!! Looking forward to you showing us the intricate details and what factors to keep in mind! Thanks for everything you do📸👍🏻😀!!!
Barry cheers! Have a lovely weekend ahead :D
Cheers 🥂
cheers mom!
Quite an interesting video, first time this subject is so well explained to me
Hey cheers nelson a little nerdy (:
Really useful! I have always been a fan of "Higher ISO = less having to worry about underexposure" and now I have to question everything!
Alex, lol yes in the end it is the business of selling film
Love your explanation.
Hey Peter thank you glad you enjoyed (:
Very informative, thanks!!
Hiya cheers! :)
Congrats.
Very informative, and intimidating. Seriously though, thanks for tackling such a chewy and tough subject.
Hey Edward, congrats for sitting through the whole thing including the tough bits!
Great video and very informative 👍
hey thanks mom!
I often go with the box speed. Sometimes I overexpose around 1 to 1,5 stops.
Yea I’d go for a similar level of over- when in doubt :)
Wow, very interesting Professor Belinda🤔!! You make it all sound so easy, but you didn’t tell me there’d be math involved🤪😬. Great work!!
Barry lol the math was a surprise wasn’t it? I’m no math person but the subject warrants it haha
Is it just me or did the middle of the straight section of that curve looked higher than 1.3?. I was told by someone with as PHD in chemistry who formulated developers for a living that 1 stop difference in exposure doesn't make much difference on a Black & White negative, so I tend not to be too bothered about rated film speed and just use the box speed. I suspect that the vagaries of camera metering systems are more likely to be an issue in most cases. Nice to see you tackling the subject though.
Paul, yea that’s the thing; where the midpoint lies also depends on where you determine to be the ends of the straight bit, very much subjective. I’d say that though you can certainly live with a slightly underexposed neg, you probably want to create the most printable neg in the first place