Cheap wide angle lens

Started 3 months ago | Questions
Alphoid Veteran Member • Posts: 5,379
Cheap wide angle lens

I am using a Fujian 25mm f/1.4 CCTV lens on my camera. It's a cheap lens ($20-ish). For my purposes, the quality is fine, but the focal length is just a smidgen too long. Can someone recommend another lens? I think even 20mm would be fine, but probably something like 15mm would be ideal. Wider is better than narrower -- I don't mind cropping -- but I think the ultracheap ultrawides and fisheyes would be too wide (8mm would be way too wide).

Requirements:

  • Manual focus, manual aperture.
  • Works on MFT

Desirable:

  • Low price
  • Maybe less vignetting than the 25mm CCTV on MFT. The vignetting does cause issues.
  • Works with my adapter

Aside from vignetting, image quality (e.g. sharpness) is almost irrelevant for this application. Indeed, if the edges were blurred, that would probably help more than hurt. There's an image processing pipeline, and vignetting makes that way more complex than it otherwise needs to be.

ANSWER:
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Jouko Senior Member • Posts: 1,684
Re: Cheap wide angle lens
7

If you are after a very cheap wide angle and the image quality does not have to be on the top high, the body cap lenses from Olympus might be the answer. There are a 9mm fisheye and a 15mm wide versions. Both simple, easy and slow fixed focus lenses. And very cheap.

Cheers!

Jouko
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Chas2 Veteran Member • Posts: 3,638
Re: Cheap wide angle lens
1

Jouko wrote:

If you are after a very cheap wide angle and the image quality does not have to be on the top high, the body cap lenses from Olympus might be the answer. There are a 9mm fisheye and a 15mm wide versions. Both simple, easy and slow fixed focus lenses. And very cheap.

Cheers!

Jouko
'The best camera in the world is the one you have with you when you need it'
https://www.instagram.com/jouko.k.lehto/
http://lehtokukka.smugmug.com/
http://jouko-lehto.artistwebsites.com/
https://joukolehto.blogspot.fi/ - Lenses for mFT-cameras
https://joukolehto.blogspot.fi/2015/12/what-to-dowith-camera-during-winter.html

Not cheap like the Fujian but plenty are available used and therefore less expensive, and are native lenses with auto focus and auto exposure

20/1.7 Panasonic

17/2.8 Olympus

14/2.5 Panasonic

C mounts like the Fujian CCTV lens are plentiful. Look in B&H under cctv lens...hundreds of hits

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OP Alphoid Veteran Member • Posts: 5,379
Not a bad choice, aperture

Hmmm.. That seems like a decent choice. I forgot they made those, or how cheap those were.

I'm not sure whether the f/8 aperture would let in enough light. Part of my reason for the 25mm f/1.4 is it does reasonably well with limited light. I don't think e.g. f/2.8 would be a problem, and probably even f/4 might even be okay, but I think f/8 is really pushing it.

OP Alphoid Veteran Member • Posts: 5,379
No autofocus

I don't want autofocus or auto-anything, or native lenses. I have plenty of native lenses. Those don't work. This will be for a setup where the camera is mounted, where I want the settings 100% fixed, forever. I turn a mechanical focus ring, aperture ring, and it never changes again unless I change it.

A cheap CCTV is ideal, but I do want to make sure it covers the full MFT sensor. Most of the B&H ones are for 1/2" sensors or smaller, not micro four thirds.

twitterdonald Junior Member • Posts: 33
Re: Not a bad choice, aperture

14mm 2.5 (so small and very sharp!)

19mm 2.8 (Not the nicest one, but also very sharp)

17mm 1.8 (more expensive but my favorite lens with very nice colours)

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Ron Evers
Ron Evers Senior Member • Posts: 1,728
12mm f2 full manual - -

Samyang/Rokinon/Bower. Very sharp .  I love it.

https://www.ephotozine.com/article/samyang-12mm-f-2-0-ncs-cs-mft-lens-review-26616/verdict

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Yar1971 Forum Member • Posts: 90
Forget CCTV / C-mount lenses below 25mm...

...unless You want to use smaller sensor area than full 4/3 sensor (like in Black Magic camera, crop modes of some Panasonic cameras). Severe (total black) circular vignetting is absolutely unavoidable on a full size 4/3 sensor <25mm.

However, there are many other solutions. You need a fully manual wide angle lens for MFT? There are some, both cheap and well, not cheap.

Somebody mentioned Samyang 12/2.0 -relatively cheap and excellent lens. It's an obvious choice if FL 12mm is O.K. for You.

You may also look for 7Artisans, Meike and similar brands (Kamlan, Voking etc.) - for different FL-s.

At the  expensive side You have Venus Laowa (different FL-s from 7.5 up tu 17mm), SLR Magic, Kowa, Voigtlander. If any, I would consider only the first two here.

Maybe some adapted SLR or rangefinder lenses from film era, but the choice below 28mm is very limited here, mostly fish eye lenses. There's something about 20-21 mm for Leica mount I guess, but prices are rather prohibitive.

Regards

-J.

OP Alphoid Veteran Member • Posts: 5,379
Re: Forget CCTV / C-mount lenses below 25mm...

Cropping isn't a problem. I'm using HDMI capture, so I don't have huge amounts of resolution to start from, but I also really don't need a heck of a lot. Looking at what's coming out of the 25mm, I think my final image will be around 20mm, but I thought something like 15mm or 12mm would give me leeway to crop down if I undershot a bit.

And less vignetting is a nice-to-have. It just complicates the image processing, but I can set up a more complex pipeline.

I'm thinking the proposed lens cap f/8 might be the best option. 25mm almost gets me to where I want to be, and there's a ton of cheap stuff in the 25mm range.

It's odd how there's a gap between cheap 25mm and cheap fisheyes. I'm starting to look at 7Artisans, Meike, Kamlan, and Voking. I'll see what I find. I found one lens by Meike, but the price is 2x-3x their other lenses on Amazon. I'll look over their full lineups. One thing I am seeing, which I think would also be a good option, is that a few of them making 1.4x or 2x wide angle conversion adapters. Those are cheap and might also be ideal.

Daneland
Daneland Regular Member • Posts: 226
Re: Cheap wide angle lens
1

Alphoid wrote:

I am using a Fujian 25mm f/1.4 CCTV lens on my camera. It's a cheap lens ($20-ish). For my purposes, the quality is fine, but the focal length is just a smidgen too long. Can someone recommend another lens? I think even 20mm would be fine, but probably something like 15mm would be ideal. Wider is better than narrower -- I don't mind cropping -- but I think the ultracheap ultrawides and fisheyes would be too wide (8mm would be way too wide).

I can see you tell 8mm is too wide but I will still advise 8 mm SLR Magic because it is not a fisheye

Requirements:

  • Manual focus, manual aperture.
  • Works on MFT

Desirable:

  • Low price
  • Maybe less vignetting than the 25mm CCTV on MFT. The vignetting does cause issues.
  • Works with my adapter

Aside from vignetting, image quality (e.g. sharpness) is almost irrelevant for this application. Indeed, if the edges were blurred, that would probably help more than hurt. There's an image processing pipeline, and vignetting makes that way more complex than it otherwise needs to be.

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stateit
stateit Senior Member • Posts: 1,135
Re: No autofocus

Alphoid wrote:

I don't want autofocus or auto-anything, or native lenses. I have plenty of native lenses. Those don't work. This will be for a setup where the camera is mounted, where I want the settings 100% fixed, forever. I turn a mechanical focus ring, aperture ring, and it never changes again unless I change it.

A cheap CCTV is ideal, but I do want to make sure it covers the full MFT sensor. Most of the B&H ones are for 1/2" sensors or smaller, not micro four thirds.

Go on then. Tell us. I know you want to...

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UppercanadianAcadian Regular Member • Posts: 467
Olympus 17mm f2.8

pretty cheap. Good results

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farmer35 Contributing Member • Posts: 839
Re: Cheap wide angle lens

There is a new manual 17mm f/1.8 lens made by Laowa.  It costs $150 direct from Laowa.  I've had mine for a few days now and I think I am going to like it.  It does vignette at the wider apertures but that is pretty well gone by f/4.

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Bruce Regier

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