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What’s the ISO “Film Speed” of these Camcorders compared to a DSLR? 

Electromagnetic Videos
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I was wondering what the effective ISO film speed of my two JVC Camcorders (the GY-HM100U and HM-GY250U) was. This video covers determining the film speeds of the camcorders by comparing them to a Nikon D810 DSLR. I show some low-light performance examples of video taken with the camcorders, and discuss how light sensitivity considerations and requirements can be somewhat different for photographic film, digital cameras, and digital camcorders.
The test chart is at electromagneticvideos.blogspo... if you want to use it!

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26 июл 2024

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Комментарии : 19   
@ThriftyToolShed
@ThriftyToolShed 8 месяцев назад
I really enjoyed this video. Thanks for sharing your knowledge on this with us!
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
Thrilled to do it - I always learn new things doing these videos!
@mahmoudmohammad2220
@mahmoudmohammad2220 8 месяцев назад
Happy to see you're back.
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
Thanks! Hopefully I will have time to do quite a few more videos before the end of the year!
@Petertronic
@Petertronic 8 месяцев назад
Good video on the topic of sensitivity. I used to service tv cameras, and spent a lot of my time looking at waveform monitors! Nice photography too.
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
Thanks - particularity from someone who serviced TV cameras. Did you service the big old 3 tube TV station cameras? That must have been cool ...
@Petertronic
@Petertronic 8 месяцев назад
@@ElectromagneticVideos I would love to have worked on the big tube cameras, but starting in the early 90's, I mostly worked on 3-CCD Sony cameras and Betacam equipment
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
@@Petertronic Oh - to bad - I know the stuff you worked on well - used it all the time when I used to do stuff with our local cable channel. Betacam (and for that matter MII) had amazing quality for analog when used with a good camera. I do have one remnant from a 3-tube vidicon TV camera that I came across in surplus store - a large dichroic mirror assembly that nicely splits incoming image into RGB images. Will have to do a video on that sometime. Unfortunately the camera was missing a lot of key parts including the lens so nothing else worth keeping.
@Petertronic
@Petertronic 8 месяцев назад
@@ElectromagneticVideos Nice! I used to have an old JVC 3 tube camera that my workplace let me have, might have been a KY-2000, the blue tube was faulty and I enjoyed tinkering with it but sadly no longer have it. I love the Betacam format, and own two machines, UVW1800P and a PVW2800P, as well as a RM-450 edit controller 😊 (PAL format, as I'm in the UK)
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
@@Petertronic Cool - I have a bunch of MII VTRs and cameras/camcorders - and an edit controller which sometime I want to try to interface with the PC and use with Kdenlive. I will also have to do some videos about video recorders - and amazing technology and maybe the last great analog tech. I was guessing you are from, the UK - I'm from Canada. So I have a question for you. Over here in NTSC land, we used vectorscopes to adjust the color phase before any broadcast - "bars and tone" was at the start of any tape for that purpose. Was that done done for PAL? Or did the line to line phase reversal remove the need for that? Are vectorscopes ever used in PAL?
@emilalmberg1096
@emilalmberg1096 8 месяцев назад
Thanks for this time warp back and forth in my memory of chemical photography!
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
Ha! You know, the funny thing is that there seems to be a resurgence in the use film. However the prices for film and developing is crazy these days!
@emilalmberg1096
@emilalmberg1096 8 месяцев назад
I managed to sell old film that had been in a freezer for decades, no one knows how old it really was, the paper boxes what like pulp. I hope the buyer benefited from the film! I myself will never go back to the chemical methods, in the same way that I always have circuit boards manufactured today.@@ElectromagneticVideos
@retrozmachine1189
@retrozmachine1189 8 месяцев назад
Very nice photography there too.
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
Thanks!
@superwaffle01
@superwaffle01 8 месяцев назад
6:29 i recognize that restore slide projector
@ElectromagneticVideos
@ElectromagneticVideos 8 месяцев назад
Ha! Yes! I didn't know why I needed it when I bought it, but it was perfect for this video. The funny thing is it must have a worn fan bearing which is temperature dependent - fan runs normally until a minute or two after the projection bulb is turned on. At that point it makes a racket. Turn the bulb off and a few minutes later the fan goes back to normal. I will have to open it up sometime and see if it is fixable.
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