Fuji X-T1 IR (actually UV-VIS-IR)

Discussion in 'Fujifilm Cameras' started by Solarflare, Aug 4, 2015.

  1. Solarflare

    Solarflare No longer a newbie, moving up!

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    Fuji announces the X-T1 IR for infrared photography Fuji Rumors
    Whow ! Thats great ! You can buy this camera directly from the producer, instead of having to find somebody to make the conversion !

    The main problem would be of course - which Fuji X lenses are actually useable with this camera ?


     
  2. Solarflare

    Solarflare No longer a newbie, moving up!

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    Thom Hogan agrees with my initial question:
    Exactly what I was thinking ... well not in this detail, but I was wondering which lenses would work.

    Maybe all the WR lenses work ? When they introduced WR, they might have known they'll release a broadband camera at that point. And it would make sense - with the X-T1, you really only want WR lenses, right ? Since otherwise the WR of the X-T1 is useless. That would then *checks the internet* be 5 lenses right now:

    FUJINON XF 16mm F1.4 R WR
    FUJINON XF 90mm F2 R LM WR
    FUJINON XF16-55mm F2.8 R LM WR
    FUJINON XF50-140mm F2.8 R LM OIS WR
    FUJINON XF18-135mm F3.5-5.6 R LM OIS WR

    This REALLY needs a macro lens of sorts, though. For forensics, obviously a macro is needed.
     
  3. f2bthere

    f2bthere TPF Noob!

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    I think you need to rely upon real world experience.

    Lens design is a complex art with many trade-offs. It is possible to redesign a lens to work with IR (Zeiss has done so), but IR is a fairly niche product and it wouldn't make sense to prioritize IR capability, even for Fuji.

    In general, longer lenses tend to fare better than wide lenses.

    Here is one place you can get user reports on various Fuji lenses with IR.

    X Photography: Fuji Infrared Lens Tests

    Be aware that what range of the IR spectrum you are exposing may effect the lenses performance.

    You may note that the Zeiss Macro for Fuji does well up to f5.6 and is still usable at f8.
     
  4. Solarflare

    Solarflare No longer a newbie, moving up!

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    Sources on UV and IR :

    X Photography: Fuji Infrared Lens Tests
    Lens Hotspot List - Kolari Vision
    Fuji and Nikon Lenses Vis-UV-IR test

    Status:

    Rokinon 8mm f/2.8 UMC Fisheye
    UV: ?
    IR: ? Positive Reports, but unclear if version I or II

    Rokinon 8mm f/2.8 UMC Fisheye II
    UV ?
    IR: ? Positive Reports, but unclear if version I or II

    Carl Zeiss Touit Distagon T* 12mm f2.8
    UV: ?
    IR: ?

    XF 14mm f2.8 R
    UV: ?
    IR: OK. Some sources say mild hotspot above f8.0.

    XF 16mm f1.4 R WR
    UV: ?
    IR: ?

    XF 18mm f2.0 R
    UV: ?
    IR: No. Very soft wide open, quickly develops hotspots.

    XF 23mm f1.4 R
    UV: ?
    IR: OK

    XF 27mm f2.8
    UV: Good transmittance, strong backfocus.
    IR: No. Wide open only.

    Carl Zeiss Touit Planar T* 32mm f1.8
    UV: ?
    IR: ?

    XF 35mm f1.4 R
    UV: ?
    IR: Useable up to f8.0, some say f11.0.

    XF 35mm f2.0 R WR
    UV: ?
    IR: ?

    Carl Zeiss Touit Makro-Planar T* 50mm f2.8
    UV: ?
    IR: Useable up to f5.6.

    XF 56mm f1.2 R [APD]
    UV: ?
    IR: No. Only useable at f2.8. Soft below and hotspots above. APD version identical (unsurprisingly, optical formula is exactly the same).

    XF 60mm f2.4 R Macro
    UV: ?
    IR: No. Only useable up to f2.8.

    XF 90mm f2.0 R LM WR
    UV: ?
    IR: ?





    XF 10-24mm f4.0 R OIS
    UV: ?
    IR: No. Only hotspot-free at 24mm wide open.

    XF 16-55mm f2.8 R LM WR
    UV: ?
    IR: ?

    XC 16-50mm f3.5-5.6 OIS
    UV: ? -- reports of bad transmission and slight frontfocus do not specify version
    IR: ? -- mixed reports

    XC 16-50mm f3.5-5.6 OIS II
    UV: ? -- reports of bad transmission and slight frontfocus do not specify version
    IR: ? -- maybe thats why theres mixed reports, there are two versions

    XF 18-55mm f2.8-4.0 R LM OIS
    UV: ?
    IR: No. Only useable at 35mm and above wide open.

    XF 18-135mm f3.5-5.6 LM OIS WR
    UV: ?
    IR: OK. Only a slight hotspot at 135mm and f/22.

    XF 50-140mm f2.8 R LM OIS WR
    UV: ?
    IR: ?

    XC 50-230mm f4.5-6.7 OIS
    UV: Very little transmission, backfocus.
    IR: OK up to f/8 (nothing else tested), backfocus.

    XF 55-200mm f3.5-4.8 R LM OIS
    UV: ?
    IR: Useable up to f/8.



    So thats for IR:

    Great (no issues): XF 23mm f1.4 R, possibly Rokinon 8mm f/2.8 UMC Fisheye (but 2 versions exist)

    Good (only minor issues): XF 18-135mm f3.5-5.6 LM OIS WR

    Tolerable (useable up to f/8): XF 14mm f2.8 R, XF 35mm f1.4 R, XC 50-230mm f4.5-6.7 OIS, XF 55-200mm f3.5-4.8 R LM OIS

    Barely tolerable (useable up to f/5.6): Carl Zeiss Touit Makro-Planar T* 50mm f2.8

    Intolerable (only useable in sweet spot): XF 27mm f2.8, XF 56mm f1.2 R [APD], XF 60mm f2.4 R Macro

    Unusable: XF 18mm f2.0 R, XF 10-24mm f4.0 R OIS,

    Unknown: Carl Zeiss Touit Distagon T* 12mm f2.8, XF 16mm f1.4 R WR, Carl Zeiss Touit Planar T* 32mm f1.8, XF 35mm f2.0 R WR, XF 90mm f2.0 R LM WR, XF 16-55mm f2.8 R LM WR, XF 50-140mm f2.8 R LM OIS WR

    Mixed Reports: XC 16-50mm f3.5-5.6 OIS, XC 16-50mm f3.5-5.6 OIS II
     
  5. Solarflare

    Solarflare No longer a newbie, moving up!

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  6. growl

    growl TPF Noob!

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    For those of you interested, I did a quick review of the Fuji XF 35mm F2 on a Fuji X-T10 Full Spectrum Camera with the Hoya r72 and the B+W 403UV filter to check for any hotspots. Basically no signs of hotspots from what I could see. I haven't tested a 830nm filter yet (because I don't have one at the moment).

    XF 35mm F2
    IR: 720nm = ok
    UV: B+W 403UV filter = ok

    Check out my blog post here:
    Fuji XF 35mm F2 IR & UV hotspot test
     
  7. Gary A.

    Gary A. Been spending a lot of time on here!

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    I am thinking of converting my X100S into IR or UV. Anybody know if this is a good idea or not?
     
  8. growl

    growl TPF Noob!

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    If you are wanting to do proper UV then the x100s might not be ideal. But if you want to use the B+W 403 UV filter then it might be ok (you would need to do a Full Spectrum conversion). I haven't read a lot about full spectrum X100/s/t cameras, just Infrared conversions.

    On a non converted X100/s/t, the lens suffers from hotspots (more pronounced with deep infrared filters with numbers over 800nm).

    There was one person who got his X100s converted by Kolari Vision with their new AR coated filters (to help reduce/eliminate hotspots) to 830nm I think, I can't remember the link offhand.

    I was trying to decide to convert my x100s or x-t10 to full spectrum, and ended up choosing the x-t10 due to more flexibility with lenses (some lenses are good for IR and some are good for UV, however UV filters are expensive and UV lenses are as well).

    The X100s can take some decent IR photos as is, by using a Hoya r72 filter, even hand held. But no where near as good as a fully converted camera.
     
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  9. Gary A.

    Gary A. Been spending a lot of time on here!

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    Thank you, most informative ... and you just joined today. Welcome to the forum. I will contact Kolari Vision and again thank you.
     
  10. growl

    growl TPF Noob!

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    Let me know how it goes, I'm very interested how the X100s fares with AR coated full spectrum glass. It will give you lots of opportunities to try out different filters and see which one you like the most!

    For me, so far, my favourite is the B+W 403 UV filter, it gives a nice coloured infrared look straight out of camera without any post processing. And you can always set to B+W for more traditional IR look as well.
     
  11. Solarflare

    Solarflare No longer a newbie, moving up!

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    All X100 models to date (X100, X100s, X100t, X100f) use identical optics, which apparently develops hotspots with IR at all apertures.

    I dont remember where I read that though and I dont remember reading anything about the X70.

    I would strongly suggest to use system cameras for full conversions.
     
  12. growl

    growl TPF Noob!

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    I did another hotspot test. This time for the Fuji XF 50mm F2 - No visible hotspots from what I could see.

    Blog post url below along with photos and list of filters used
    Fuji XF 50mm F2 IR & UV Hotspot Test
     

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