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8mm f/3.8 CCTV fisheye for NEX/4/3 ?
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PostPosted: Tue Jun 27, 2017 5:22 pm    Post subject: 8mm f/3.8 CCTV fisheye for NEX/4/3 ? Reply with quote

Has anyone tried this ?

https://www.amazon.com/Pixco-Fish-eye-Camera-E-Mount-Adapter/dp/B01IB81OE8/ref=sr_1_1?ie=UTF8&qid=1498583182&sr=8-1&keywords=cctv+to+nex+lens

http://www.ebay.com/itm/8mm-F3-8-Fish-eye-CCTV-Lens-For-Micro-Four-Thirds-Mount-Camera-/232295870356?hash=item3615e9af94:g:gPQAAOSwmgJY6AUN


PostPosted: Tue Jun 27, 2017 10:01 pm    Post subject: Reply with quote

https://www.youtube.com/watch?v=CijPyfT3pBk

and that, states that only useful from f5.6 onwards

https://www.youtube.com/watch?v=YwNdfxZwTGo

This guy here has it and reports about it (with pics):
https://www.mu-43.com/threads/no-name-8mm-f3-8-4-3%E2%80%9D-fish-eye-lens.83973/

Full format fisheye (not circular), just looks very distorted.

Here is aa flickr album w. pics: https://www.flickr.com/photos/poojee/sets/72157649099676928/


PostPosted: Tue Jun 27, 2017 10:18 pm    Post subject: Reply with quote

Thanks!

Looks pretty good to me actually.
I was looking more for super-wide than circular, as such.

Looks like a tiny thing that would go well with a snapshot-type Nex 3 hung around the neck.
No focusing needed.


PostPosted: Tue Jun 27, 2017 10:44 pm    Post subject: Reply with quote

luisalegria wrote:
Thanks!

Looks pretty good to me actually.
I was looking more for super-wide than circular, as such.

Looks like a tiny thing that would go well with a snapshot-type Nex 3 hung around the neck.
No focusing needed.


Like 1


PostPosted: Fri Jun 30, 2017 10:03 pm    Post subject: Re: 8mm f/3.8 CCTV fisheye for NEX/4/3 ? Reply with quote

luisalegria wrote:
Has anyone tried this ?

https://www.amazon.com/Pixco-Fish-eye-Camera-E-Mount-Adapter/dp/B01IB81OE8/ref=sr_1_1?ie=UTF8&qid=1498583182&sr=8-1&keywords=cctv+to+nex+lens

http://www.ebay.com/itm/8mm-F3-8-Fish-eye-CCTV-Lens-For-Micro-Four-Thirds-Mount-Camera-/232295870356?hash=item3615e9af94:g:gPQAAOSwmgJY6AUN


Unless a c-mount lens is made for a 1" cctv sensor, it won't illuminate a full m4/3rds field and even then, it needs to be 16mm or longer. It won't cover a whole Sony NEX field. Lenses made for 2/3" and smaller sensors hard-vignette, producing only a circle of illumination. In fact, what can appear to be a fisheye view may not even be as wide as a shorter lens meant to cover a wider sensor.


PostPosted: Sat Jul 01, 2017 1:01 am    Post subject: Reply with quote

Some CCTV lenses though have coverage for 4/3 and a few even for APS-C

I have a couple of Fujian CCTV (35/1.6 and 25/1.Cool that cover APS-C quite well.
Albeit with some field curvature effects.

I have done a post on the 35/1.6 and I have an upcoming one on the 25/1.8, which are rather nice if quirky lenses on the NEX 3 and NEX 7.

35/1.6 -

http://forum.mflenses.com/fujian-35mm-f-1-6-c-mount-for-aps-c-t77426,highlight,%2Bfujian.html

There are others, going by various online tests and samples.


PostPosted: Sat Jul 01, 2017 5:30 am    Post subject: Reply with quote

Fujinon-TV 1.4/25, 1.7/35, 1.4/50 and 1.8/75 will all cover APS-C.