A&P What good would a f/2.8 lens be compared to a f/4 when using a flash?

Discussion in 'Lifestyle' started by 1200mk, Feb 3, 2007.

  1. 1200mk

    1200mk Still same OG

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    I want to get a new lens but not sure if IQ would be significantly better (due to faster shutter speeds on the f/2.8).

    But when I use my built-in flash on my d80 the shutter speed never goes passed 1/80.
     
  2. turbodude

    turbodude Just a photographer OT Supporter

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    most 2.8 lenses stopped down to f/4 will be known to be sharper than 4.0 @ f/4. but significant gains i don't you will notice unless your pixel peeping, print you will not notice at all. depending on lens of course.
     
  3. Jcolman

    Jcolman OT Supporter

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    The biggest advantage you'll notice is when you're not using flash and you're shooting in low light situations. The extra stop comes in handy.
     
  4. Dan-blackline

    Dan-blackline Registered Sex Offender

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    Yeah, I'm using 3.5 at the moment and I'm really missing that extra stop to 2.8
     
  5. SenenCito

    SenenCito OT Supporter

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    2.8 rules for covering shows and pretty much anytime you want to take the camera at night..which IMHO is the best time to have it out.
     
  6. hsubaru

    hsubaru New Member

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    And even then, 2.8 is too slow for night time candids.
     
  7. 1200mk

    1200mk Still same OG

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    So if I were to cover clubbing events....

    would a sb600 with a tamron 17-50 f/2.8 be better than a tokina 12-24 f/4?
     
  8. mojito

    mojito New Member

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    apples and oranges, they do different things.
     
  9. turbodude

    turbodude Just a photographer OT Supporter

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    if i were covering club events which i do at times, i go no where without my two primes.... 20 f/1.8 and my new 35 f2. they are perfect for the crop sensor of my 30d.
     
  10. 1200mk

    1200mk Still same OG

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    does nikon have a 20 f/1.8 equiva?
     
  11. 1200mk

    1200mk Still same OG

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    what do you think would be more useful in a club setting?
     
  12. turbodude

    turbodude Just a photographer OT Supporter

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    primes all the way...
     
  13. 19Godfather86

    19Godfather86 New Member

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    I just picked up a 50mm 1.8 and it's awesome. I can't wait to go to a show and take some shots.
     
  14. 1200mk

    1200mk Still same OG

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    but ill be using a sb600 though.... I am not going to be using ambient light.
     
  15. 1200mk

    1200mk Still same OG

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    I own that but the problem with that is the focal length is limiting.
     
  16. turbodude

    turbodude Just a photographer OT Supporter

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    doesn't matter, flash isn't going to help if you only have 2.8. Been there done that. Remember you are going to be photographing people they tend to move, and the flash still may not be able to freeze their movement if your lens won;t give you a fast enough shutter speed. also primes will give you better oof area to isolate your subjects.
     
  17. mojito

    mojito New Member

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  18. 1200mk

    1200mk Still same OG

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    could I see some of your work? thanks
     
  19. turbodude

    turbodude Just a photographer OT Supporter

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    i don;t have an online profile as of yet but i will see what i can show you in the way of shows. I will compile some and show you.
     
  20. mobbarley

    mobbarley Active Member

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    thanks for that.... again.... :ugh:

    For the same shutter speed you will get more background with a 2.8 vs an f4. If things arent moving to fast its nice to let the shutter drag a little to let the background catch up to the foreground which was hit by the flash, but it really depends on what you are shooting.

    You will need less flash power at F2.8, which will also improve recycle times and battery life.
     

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