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

Printed From: Dyxum.com
Category: Equipment forums
Forum Name: E-mount lenses
Forum Description: For E-mount lens discussions
URL: https://www.dyxum.com/dforum/forum_posts.asp?TID=114349
Printed Date: 27 November 2021 at 23:08


Topic: E-mount Lenses for Infrared (IR) on NEX cameras
Posted By: stavros78
Subject: E-mount Lenses for Infrared (IR) on NEX cameras
Date Posted: 13 July 2015 at 20:58
Which lenses have you found work well for Infrared on modified or unmodified E-mount cameras?

Check here groovyone's post for A-mount lenses and cameras : http://www.dyxum.com/dforum/lenses-and-unmodified-cameras-for-infrared-ir_topic50589_page1.html - Lenses and unmodified cameras for Infrared (IR)


E LENSES:

Sony 10-18mm F4 OSS                   mild hotspots starts at f5.6 @ 720nm

Sony E PZ 16-50mm F3.5-5.6 OSS        hotspot starts at f6.3

Sony 18-55mm F3.5-5.6 OSS             hot spot @18mm; hot spot gone @>20 , Thanks Micholand

Sony Carl Zeiss 16-70mm F4 ZA OSS     hotspot from f4 @ 720nm, no hotspot @ 590nm, Thanks gwevans

Sony 55-210mm F4.5-6.3 OSS            no hotspot

Samyang 12mm F2 NCS CS               hotspot from f2

Sony 16mm F2.8                        hot-spot starting at about f/5.6, Thanks Alex H

Sigma 30mm F2.8                      very good results, Thanks eagleeye

Sony 50mm F1.8 OSS                    hotspot starts at f12


FE LENSES:

Sony Carl Zeiss 16-35mm F4 OSS        mild hotspots starts at f8

Sony Carl Zeiss 35mm F2.8 ZA          ok until F4, then distinct hot spot from F5.6 onwards w/ IR720

Sony Carl Zeiss 55mm F1.8 ZA          not noticed any particular issues, Thanks nandbytes

Samyang AF 45mm F1.8 FE               perfectly fine; no hotspot


Nex-6 camera modification : http://www.ir-photo.net/ir_nex6mod.html - http://www.ir-photo.net/ir_nex6mod.html and video : https://www.youtube.com/watch?v=D776GX3oSHQ - https://www.youtube.com/watch?v=D776GX3oSHQ , Thanks to IR-Photo.net | Infrared Photography

Nex-5 camera modification : http://www.pbase.com/pganzel/inside_the_nex_5 - http://www.pbase.com/pganzel/inside_the_nex_5 , Thanks to Pete Ganzel



Replies:
Posted By: slo.Metallc
Date Posted: 14 July 2015 at 00:08
Hi stavros78,

I think that best answer for your question is http://www.dyxum.com/dforum/lenses-and-unmodified-cameras-for-infrared-ir_topic50589_page1.html - Lenses and unmodified cameras for Infrared (IR) topic. You will find in there a table with lenses that are good or bad for IR photography.

If you post your results there, I think that Keith (groovyone) or someone from AMAE team will probably update the table with your results.

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How small is small?
Well, if it's bigger than 23x16mm, then it is huge!


Posted By: stavros78
Date Posted: 14 July 2015 at 07:50
I have see that and it's on the a mount category and have only a mount lenses, that was the reason for a new post.
But i'll post it and there.
Thanks


Posted By: Alex H
Date Posted: 14 July 2015 at 08:06
Sony 16mm F/2.8 produces hot-spot starting at about f/5.6, if I remember correctly.
Sony 18-55 F/3.5-5.6 did not show any hot spots in my pictures.
Unfortunately, I can not re-test these lenses, as I do not have them any more.

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http://www.holovachov.com/fluorescence - Ultraviolet-induced visible fluorescence photography - A7, A77, NEX6, NEX6-FS - http://www.holovachov.com - Gallery


Posted By: nandbytes
Date Posted: 14 July 2015 at 19:32
I have SEL10-18mm and had 18-55mm, never had any hotspot problems with either lens.

I have used FE35 and FE55 in passing and not noticed any particular issues. I will try these again when I have more time.

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https://www.flickr.com/photos/nandbytes/ - my flickr
A1, A7C


Posted By: Micholand
Date Posted: 19 July 2015 at 16:07
SEL 18-55/3.5-5.6 can produce a hot spot @18mm; to circumvent - set lens to 20mm and it's gone.

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/Michael

//www.dyxum.com/dforum/topic87334.html - DWEs don't grow on trees! | //www.dyxum.com/dforum/posting-images-and-links-faqs_topic28010.html - Posting images&links FAQ


Posted By: gwevans
Date Posted: 06 September 2015 at 18:01
I've found this post because I'm after the same information as Stavros78.

I've just had an A6000 converted to 590nm. So far I've only used the 16-70 f4 in testing over the past few days and I've noticed a mild hot spot when shooting from f8. The hotspot is more noticeable with an R72 filter on the lens.

If anyone can recommend any good E mount lenses for 590nm and 720nm infrared then it would be a great help.



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George Evans
http://www.gwevansphotography.com/ - My Link




Posted By: stavros78
Date Posted: 06 September 2015 at 19:54
No hotspot with 16-70 ? That's great.

You have the filter on the sensor or on lens ?

In my nex6 with the filter on lens i have a huge hotspot from f4.


Posted By: stavros78
Date Posted: 06 September 2015 at 20:00
Also after testing the SEL 18-55/3.5-5.6, i had the same results as Micholand only that i have to set lens to 22-23 to remove hotspot.


Posted By: gwevans
Date Posted: 06 September 2015 at 23:50
The A6000 has been permanently converted to 590nm. Perhaps that's the difference. It could be the filter on the lens causing the hot spot.

Taken with the 16-70 f4 at f16.


-------------
George Evans
http://www.gwevansphotography.com/ - My Link




Posted By: stavros78
Date Posted: 07 September 2015 at 07:08
Nice shot gwevans !

I 'm using the same Hoya r72 in all lenses.

I think maybe it's better with the filter on the sensor.


Posted By: stavros78
Date Posted: 07 September 2015 at 07:25
Two examples of 16-70 at f4. the hotspot is slightly corrected


Posted By: stavros78
Date Posted: 06 December 2015 at 17:12
Finally i put an 720nm filter, that i bought from http://www.ebay.com/usr/image-laboratory - image-laboratory , on the sensor of my nex-6 .

The results i get are the same with the hoya R72, only some less flaring, but now i dond't mess with screwing and unscrewing filters in front of the lenses.


Posted By: stavros78
Date Posted: 06 December 2015 at 17:26
I also tested again my lenses and update the first post's results.


Posted By: eagleeye
Date 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.


Posted By: stavros78
Date 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!


Posted By: stavros78
Date 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 : http://www.dyxum.com/dforum/lenses-and-unmodified-cameras-for-infrared-ir_topic50589_page1.html - Lenses and unmodified cameras for Infrared (IR)


Posted By: nandbytes
Date 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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https://www.flickr.com/photos/nandbytes/ - my flickr
A1, A7C


Posted By: stavros78
Date 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


Posted By: nandbytes
Date Posted: 30 January 2016 at 09:52
720nm too myself. I don't find it particularly annoying but eagleeye might

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https://www.flickr.com/photos/nandbytes/ - my flickr
A1, A7C


Posted By: stavros78
Date 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.


Posted By: nandbytes
Date 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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https://www.flickr.com/photos/nandbytes/ - my flickr
A1, A7C


Posted By: stavros78
Date Posted: 30 January 2016 at 10:23
Thanks nandbytes, i ' m really appreciated


Posted By: nandbytes
Date 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

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https://www.flickr.com/photos/nandbytes/ - my flickr
A1, A7C


Posted By: Micholand
Date 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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/Michael

//www.dyxum.com/dforum/topic87334.html - DWEs don't grow on trees! | //www.dyxum.com/dforum/posting-images-and-links-faqs_topic28010.html - Posting images&links FAQ


Posted By: Micholand
Date 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

//www.dyxum.com/dforum/topic87334.html - DWEs don't grow on trees! | //www.dyxum.com/dforum/posting-images-and-links-faqs_topic28010.html - Posting images&links FAQ


Posted By: 2manycamera
Date 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.

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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


Posted By: Micholand
Date 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

//www.dyxum.com/dforum/topic87334.html - DWEs don't grow on trees! | //www.dyxum.com/dforum/posting-images-and-links-faqs_topic28010.html - Posting images&links FAQ


Posted By: Barrin
Date Posted: 08 June 2020 at 17:05
Just managed to have some shots with my newly converted nex camera and my lovely 24/1.8 zeiss.
No hotspot at the moment with a 720 nm filter mounted on it.
I wait for the filter adapter to test also my sigma 60.
I will update with more info

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Sony A6000|Zony 24/1.8|Sigma 60/2.8

3xi|M35-70/4|M100-200/4.5

Olympus Trip 35


Posted By: Barrin
Date Posted: 21 June 2020 at 06:31
Here's the update:
Sony Zeiss 24/1.8: no hotspot both at 720 & 590 nm with my full spectrum Nex 3n.

Sigma 60/2.8: no hotspot both at 720 & 590 nm with my full spectrum Nex 3n.

I can also confirm nice operation of sigma 30 2.8. This sigma trio ( together with the 19 I read performs well too) appears to be terrific in IR at a really appealing price!



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Sony A6000|Zony 24/1.8|Sigma 60/2.8

3xi|M35-70/4|M100-200/4.5

Olympus Trip 35


Posted By: Petrochemist
Date Posted: 15 March 2021 at 14:04
Most of my IR is shot on adapted lenses using a converted A7ii, but I have used the FE28-70 F3.5-5.6 OSS a fair bit too. Not spotted any hot spot issues on that one

I've also taken a few shots with my Samyang 14mm/2.8 ED AS IF with no major issues apparent. My copy is quite a long way out on focusing distances (even when just shooting visual light) so I can't gauge if focus shift might cause difficulties.

I won't try to advise on the adapted lenses



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