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  1. #1
    Join Date
    Nov 2005
    Location
    Amherst, MA
    Posts
    3,249

    5D vs 40D DOF Test

    I thought some of you might find this interesting. I've heard that the DOF at f/4 on a FF sensor is roughly equivalent to f/2.8 on a 1.6 crop sensor, so I decided to test it out.....

    40D with 17-55 @ 55mm and 5D with 24-105 @ 88mm.....






    40D @ f/2.8 on Left, 5D @ f/4 on Right....

    Nearly equal DOF; if anything, the 5D appears to have less DOF to my eyes.





    Now, 40D @ f/4 on Left, 5D @ f/4 on Right...

    Clearly less DOF with the 5D at equivalent f-stops.
    Michael B.
    Canon 5D2, 550D, Sony NEX 5N, Sigma 15mm fish, 24L mkI, 35L, 40mm f/2.8, 50 1.8 II, Sigma 50 1.4, Sigma 50mm f/2.8 macro, 60mm macro, 100mm f/2, 70-200 f/4, 200 f/2.8 mk I, Tamron 28-75 f/2.8, 430EX. Growing list of MF lenses!

  2. #2
    Join Date
    Jul 2006
    Posts
    3,565
    Wait a minute! since when do you have a 5D!?! How are ya liking it?
    5D MK III, 50D, ELAN 7E, 17-40mm 4, Sigma 10mm 2.8 fisheye, 18-55mm 3.5-5.6 IS, 30mm 1.4, 85mm 1.8, 580 EX, 430 EX speedlight, Pocket wizard flex and mini.
    Canon G10

    Pentax P30, 50mm 2.0

  3. #3
    Join Date
    Nov 2005
    Location
    Amherst, MA
    Posts
    3,249
    Quote Originally Posted by Nickcanada View Post
    Wait a minute! since when do you have a 5D!?! How are ya liking it?
    I "mentioned" it in another thread. I was offered an incredible deal on a "used" 5D/24-105 with less than 200 clicks on it, so I couldn't pass it up. I know the 5D has an amazing reputation, but I haven't yet decided whether to keep the 5D or 40D.
    Michael B.
    Canon 5D2, 550D, Sony NEX 5N, Sigma 15mm fish, 24L mkI, 35L, 40mm f/2.8, 50 1.8 II, Sigma 50 1.4, Sigma 50mm f/2.8 macro, 60mm macro, 100mm f/2, 70-200 f/4, 200 f/2.8 mk I, Tamron 28-75 f/2.8, 430EX. Growing list of MF lenses!

  4. #4
    Join Date
    Nov 2005
    Location
    Amherst, MA
    Posts
    3,249
    By the way, here's the 50mm 1.4 @ f/1.6 on the 5D....





    Michael B.
    Canon 5D2, 550D, Sony NEX 5N, Sigma 15mm fish, 24L mkI, 35L, 40mm f/2.8, 50 1.8 II, Sigma 50 1.4, Sigma 50mm f/2.8 macro, 60mm macro, 100mm f/2, 70-200 f/4, 200 f/2.8 mk I, Tamron 28-75 f/2.8, 430EX. Growing list of MF lenses!

  5. #5
    Join Date
    Sep 2007
    Posts
    529
    Ya that bigger sensor makes for a sexier-ly shallow DOF
    | Canon 7D| Canon 5D|Canon EF 70-200mm f/4L IS USM | Canon EF-S 17-55mm f/2.8 IS| Canon EF 50mm f/1.4 | Canon EF 85mm f/1.2L II |
    my photos on flickr

  6. #6
    Join Date
    Nov 2006
    Location
    Michigan
    Posts
    143
    I like the 5d dof better too. I now have a headache from comparing blur
    40D 28-135 IS USM, 70-200 f4L IS,, 18-50 f2.8, 430 EX II, Canon S3

    “Those who desire to give up freedom in order to gain security will not have, nor do they deserve, either one.”

    “The only thing more expensive than education is ignorance.”

    Benjamin Franklin

  7. #7
    Join Date
    Jun 2007
    Location
    Dubai, UAE
    Posts
    2,901
    Quote Originally Posted by talkingdog View Post
    I like the 5d dof better too. I now have a headache from comparing blur
    I double that....
    Film
    Nikon EM, Series E lenses 50mm f1.8|28mm f1.8|100mm f2.8, Sigma 80-200mm f4.5-5.6
    Minolta Riva 100AF, Sinpo PQ-3, Olympus mju-III wide 100, Yashica 635
    Digital
    Sony cybershot W90, cybershot T90
    Canon A720i|400D|7D|5DMKII|85mm f1.8|24-105mm f4|135mm f2|40mm f2.8|430EX II*2|BG-E3|BG-E7
    Sigma 24mm f1.8|50mm f2.8|105mm f2.8 Samyang 8mm fisheye
    Portfolio

  8. #8
    Join Date
    Apr 2006
    Location
    Dallas, Texas
    Posts
    3,209
    niiiiiiice!!!!

    sell it and get a 30d and some lenses!
    40d | 5d mk II | 2.8/16 zenitar fisheye | 16-35L | 35L | sigma 1.4/50 | sigma 2.8/50 Macro | sigma 1.4/85 | 70-200L IS
    website
    disclaimer: posts are for personal entertainment only...not to be taken seriously...ever.

  9. #9
    Join Date
    Sep 2007
    Posts
    529
    lol now I want the new 5d replacement whenever it decides to be released
    | Canon 7D| Canon 5D|Canon EF 70-200mm f/4L IS USM | Canon EF-S 17-55mm f/2.8 IS| Canon EF 50mm f/1.4 | Canon EF 85mm f/1.2L II |
    my photos on flickr

  10. #10
    Join Date
    Jul 2005
    Posts
    8,163
    I'm still curious about a crop comparison like I described in that other circle-jerk of a measurbation thread.
    Ouch.™

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