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E-mount Lenses for Infrared (IR) on NEX cameras

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Post Options Post Options   Quote eagleeye Quote  Post ReplyReply Direct Link To This Post Posted: 24 December 2015 at 21:16
I've been generally unhappy with AF lenses for infrared. I am OCD about no hotspots, though, as in really, really fussy. The only lens I use much for infrared, other than old vintage lenses which are usually very good (so long as the look good on non infrared cameras too) is the Sigma 30mm 2.8 lens. The 18-55 and 50-210 lenses aren't too bad as long as you watch that you aren't using deep infrared filter.

My favorite lens is normally the 35mm Zeiss 2.8, but for infrared it is nearly useless, sadly.

I'm very much hoping that Minolta A-mount glass from the 80s is going to be my salvation in this regard, as I am happy with the LA-EA4 adapter. I just received an LAEA-1 adapter too, and will use it as an extra adapter for lenses I intend to only use with manual focus, just to get the aperture control.
 



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Post Options Post Options   Quote stavros78 Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 08:40
Just test the sony e 50mm f1.8 oss and there is no hotspot up to f12 and the images are sharp and contrasty!
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Post Options Post Options   Quote stavros78 Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 08:56
@ eagleeye
I like a lot the results i get from e 10-18 , 55-210 and 50 f1.8, i think they are very good lenses for both ir and normal photography.

Also you will find many information about a mount lenses here : Lenses and unmodified cameras for Infrared (IR)
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 09:12
Actually 10-18mm does show hot spots contrary to what I previously posted. But I don't care enough to want to buy and test something else for UWA.
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Post Options Post Options   Quote stavros78 Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 09:34
What filter are you using ?
At 720nm mild hot spot starts at f5.6 (i correct the first post also, was f11)little annoying after 6.3 but nothing you can't deal
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 09:52
720nm too myself. I don't find it particularly annoying but eagleeye might
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Post Options Post Options   Quote stavros78 Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 10:07

Have you tried 24mm f1.8 or 28mm f2 ? I 'm going to buy one of these (in the next 1-2 months) and i would like to shoot also ir with one of them.
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 10:14
I have the FE28. I normally don't use my FE lenses for IR. But I will test it out today and report back about it.
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Post Options Post Options   Quote stavros78 Quote  Post ReplyReply Direct Link To This Post Posted: 30 January 2016 at 10:23
Thanks nandbytes, i ' m really appreciated
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Post Options Post Options   Quote nandbytes Quote  Post ReplyReply Direct Link To This Post Posted: 19 April 2017 at 21:10
update:
FE 35mm/2.8 is fine till f/4, @f5.6 depends on how fussy you are its very distinct past that

FE28/2 is usable till f5.6

Edited by nandbytes - 23 April 2017 at 21:58
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Micholand View Drop Down
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Post Options Post Options   Quote Micholand Quote  Post ReplyReply Direct Link To This Post Posted: 23 April 2017 at 15:26
@nandbytes: I can confirm your observation w.r.t. FE35/2.8: from F5.6 onwards not really usable as hot spot is quite distinct; ok till F4 only
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Post Options Post Options   Quote Micholand Quote  Post ReplyReply Direct Link To This Post Posted: 29 May 2020 at 17:46
Just to add a new lens to this IR lens collection thread:

Samyang AF 45mm F1.8 FE is fine for IR; no hotspot at all even stopped down.
/Michael

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Post Options Post Options   Quote 2manycamera Quote  Post ReplyReply Direct Link To This Post Posted: 29 May 2020 at 18:28
Not in a position to recommend any E-mount lenses, as my IR camera is a converted Maxxam 7D. The lens that I use on this camera is the Minolta AF 24/2.8. It is excellent, no hot spots at all. However, I don't use any filters with the modified sensor, so cannot say if results will be the same when using any filtration on an un-modified body.
7D a68 a99 a6600 a7Rii 16/2.8 24/2.8 28/2 35/2 50/1.4 100/2 200/2.8 24-70CZ 1.8/135 80-200/2.8 24-105 28-135 300/4 16-50DT 70-300G Tam 90/2.8, E55-210 E2/12 Sig E1.4/16,30 & 56, FE15/4.5V
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Post Options Post Options   Quote Micholand Quote  Post ReplyReply Direct Link To This Post Posted: 02 June 2020 at 18:47
With the Samyang AF 45mm F1.8 FE not producing any hotspots using IR650/IR720/IR850 filters, I tried the new Samyang AF 75mm F1.8 FE, too.
But got mixed first IR results @650nm; so far looks like it's ok only up until f8 when a mild hot spot starts to show. But still need to do some more testing, also with different IR filters, to give a final verdict.
/Michael

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