Fixed lens for I.R. photography

Discussion in 'Beyond the Basics' started by Paolo Duzioni, Nov 20, 2007.

  1. Paolo Duzioni

    Paolo Duzioni TPF Noob!

    Joined:
    Nov 18, 2007
    Messages:
    26
    Likes Received:
    0
    Location:
    Bergamo, ITALY
    Can others edit my Photos:
    Photos OK to edit
    I'm looking for a fixed lens (range 20-35mm) to use toghether with an hoya ir-pass filter to play a little with IR photography. My camera is a CANON eos 350d (rebel xt in USA i presume)
    As i'm told some lenses will produce an hot spot, spoiling my efforts, i'm looking for a fixed lens which doesn't

    Maybe canon 28mm 2.8?
     
  2. That is probably a good lens.

    I'm not sure I understand what you mean by Hot Spot. I don't do a lot of IR work, but how would such a Hot Spot show up? Do you mean Lens Flare?
     
  3. doenoe

    doenoe TPF Noob!

    Joined:
    Mar 4, 2005
    Messages:
    4,267
    Likes Received:
    23
    Location:
    Hoorn, The Netherlands
    Can others edit my Photos:
    Photos NOT OK to edit
    The hotspot is a spot in the middle of the picture. The higher the F-stop, the smaller the spot.....but it will be more obvious then using a lower f-number....had that when i shot with the kitlens of the Canon 350D.
    I now use the Canon 50mm 1.8 MKII. Works like a charm, no hotspot whatsoever. Cant help you with a lens with the range of 20-35mm though, sorry.
     
  4. Digital Matt

    Digital Matt alter ego: Analog Matt

    Joined:
    Jan 30, 2004
    Messages:
    5,346
    Likes Received:
    65
    Location:
    Santa Barbara, CA
    Can others edit my Photos:
    Photos NOT OK to edit
    I compiled a list a few years ago of lenses which were ok, and lenses which suffered from the hot spot issue. (due to lens coatings)

    I don't know how up to date this is, but it is accurate as far as I know.

    No Hot Spot Problem.
    Tamron 17-35 f/2.8-4 Di LD (minor, only when using filters that block 100% of visible light)
    Tamron 28-75/2.8
    EF 17-40mm f4L
    EF 24-70mm f/2.8L
    EF 28-135mm/3.5-5.6 IS
    EF 28mm f/2.8
    EF 50mm f/1.8 Mk I & II
    EF 70-200mm f/4L
    EF 75-300mm f/4.0-5.6 IS
    EF 135mm f/2L
    EF 100-400mm f/4.0-5.6 IS L
    EF 100mm f/2.8 macro

    With HOT SPOT
    EFS 18-55mm f/4 - 5.6
    EF 16-35mm f2.8L
    EF 20mm f/2.8L
    EF 35mm f/2
    EF 24-85mm f3.5-4.5
    EF 28-70mm f/2.8L
    EF 28-105mm/f3.5 - 4.5
    EF 35-80mm f4.0-5.6
    EF 50mm f/1.4
    EF 50mm f/2.5 macro
    EF 70-200mm f/2.8 IS
    EF 85mm f/1.8
    Tamron 70-300mm f3.x-xxx Macro
    Sigma 20mm f/1.8
    Sigma 50-500mm "Bigma"
    Tamron 19-35mm
     
  5. Josh66

    Josh66 Been spending a lot of time on here!

    Joined:
    Oct 31, 2007
    Messages:
    14,604
    Likes Received:
    1,236
    Location:
    Cedar Hill, Texas
    Can others edit my Photos:
    Photos NOT OK to edit
    The hot spots he's talking about only happen in IR. It looks like a blown out circle in the center of the image. I think it's caused by the differences in the way visible light and IR light focus, some lenses work fine for visible light but suck at IR.

    The kit lens will produce one. I don't have any lenses (other than the kit lens) in the range you're looking for, but the 50mm 1.4 seems to work pretty good. That's the closest I have to what you're looking for.
     
  6. Paolo Duzioni

    Paolo Duzioni TPF Noob!

    Joined:
    Nov 18, 2007
    Messages:
    26
    Likes Received:
    0
    Location:
    Bergamo, ITALY
    Can others edit my Photos:
    Photos OK to edit
    thanks all, expecially 'the man with a list' alias Matt :)

    I'll go fot the canon 28 f2.8
     

Share This Page

Search tags for this page
50mm 1.8 for ir photography
,
best lenses for ir photography
,

lens for ir photography

,
lens hotspot on infrared photography
,
lenses for ir photography