distance vs focal legnth : what really causes compression (YT video)

Discussion in 'Beginner Questions' started by Caladina, Jun 14, 2021.

  1. Caladina

    Caladina Well-Known Member

    Joined:
    Jan 30, 2020
    Messages:
    1,779
    Equipment:
    Canon M50
    Canon 18-45mm m, Canon 18-150mm m, Canon 55-200mm m, Canon 22mm m, Canon 28mm m macro,
    Sigma 100-400c ef, Sigma 18-35mm art ef,
    7artisans 7.5mm m, Laowa 100mm macro ef, laowa 9mm zeroD m, Vintage M42 Lenses:
    Ashi Super - Takumar 1.8 / 55mm,
    to Admin: i post this here in the beginner section as i feel its a relevent place, i couldnt see a specific place for it as a video to watch rather than a question, move it an delete this bit of text if there is another home for it.


    very informative video on focal length vs distance.
    i'm posting the youtube link here because i think it is useful info esp about the distance being the compressor not the focal length
    https://www.youtube.com/watch?v=4wB_XvVFrwU
    The bit on compressing i found interesting starts at 7:30
     
    Caladina, Jun 14, 2021
    #1

  2. Craig Sherriff

    Craig Sherriff Well-Known Member Site Supporter

    Joined:
    Apr 25, 2017
    Messages:
    3,173
    Location:
    Tasmania, Australia
    Equipment:
    60D, 10D, 50D 1dmark3, T70, AV1, lenses ranging from 28mm to 600 mm, canonet Junior, Canonet QL 25, Mamiya C3 and 3 lens sets,Mamiya 645 pro TL and 3 lenses. Pentax MG and various lenses, Toyoview 4 * 5 inch large format camera,Calimat C1 8*10 inch ultra large format camera.
    Interesting, Caladina, I have new students in my class and was covering this topic today, it would be useful to download it and put it on disc for them to refer to later.
     
    Craig Sherriff, Jun 15, 2021
    #2
  3. Caladina

    Caladina Well-Known Member

    Joined:
    Jan 30, 2020
    Messages:
    1,779
    Equipment:
    Canon M50
    Canon 18-45mm m, Canon 18-150mm m, Canon 55-200mm m, Canon 22mm m, Canon 28mm m macro,
    Sigma 100-400c ef, Sigma 18-35mm art ef,
    7artisans 7.5mm m, Laowa 100mm macro ef, laowa 9mm zeroD m, Vintage M42 Lenses:
    Ashi Super - Takumar 1.8 / 55mm,
    i find that a rolled up piece of news paper makes them remember stuff like this :D
     
    Caladina, Jun 15, 2021
    #3
  4. Craig Sherriff

    Craig Sherriff Well-Known Member Site Supporter

    Joined:
    Apr 25, 2017
    Messages:
    3,173
    Location:
    Tasmania, Australia
    Equipment:
    60D, 10D, 50D 1dmark3, T70, AV1, lenses ranging from 28mm to 600 mm, canonet Junior, Canonet QL 25, Mamiya C3 and 3 lens sets,Mamiya 645 pro TL and 3 lenses. Pentax MG and various lenses, Toyoview 4 * 5 inch large format camera,Calimat C1 8*10 inch ultra large format camera.
    Caladina, I see you do not interact with a lot of senior people, my classes are about socializing and if they forget things , so you just use Auto, besides I do not want to upset them as they are the ones who bring the biscuits and cakes to class.
     
    Craig Sherriff, Jun 15, 2021
    #4

Share This Page