Any one have any good C mount optics photos or experiences? These two cheapo optics have actually been pretty good. The CS mount, plastic body optic is surprisingly good for $12. On the wide end it has a pretty extreme vinette, on the telephoto side it actually covers a 1" sensor fine and is surprisingly sharp.
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>>4414168 2.8mm approx 8mm equivilent.
Quality is pretty bad, fisheye effect pretty extreme.
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>>4414168 The 8.5mm Cosmicar TV lens is honestly a real sleeper. Obviously does not cover a 1" sensor.
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>>4414172 However cropped down it looks great. Shockingly good infact.
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>>4414168 Wide open its still sharp but starts getting some weird distortions. I kind of like them. Makes me want to look for a Cosmicar of a longer focal length to do portraits.
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>>4414168 And a couple of Cosmicar 8.5 snapshits
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Anonymous
this thread is of interest to me because I've been thinking of picking up a Q7 to fuck around with
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>>4414260 Pentax Q's are cool but the crop factor is brutal to deal with. its like 5.5x, so anything you adapt becomes a normal or telephoto lens.
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>>4414260 I tried working with the Q for while as a daily. Couldn't do it.
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>>4414168 Dumping some more snap shits.
The Cosmicar 8.5mm is best at f/4.0- f/5.6. Under that its fine, over f/8.0 the image starts to degrade.
Getting as close as possble to the subject is best.
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Anonymous
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>>4414271 fine by me, I find myself using longer lenses anyways
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>>4414168 I'm just gonna keep posting BS to keep /P/ alive.
This is a pointles image, just testing out some extreme borkah
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>>4415663 Despite the fast aperture, the lens needs a decent light source to really resolve. This is partially the Samsung NX mini but even at hig ISO's things come out ok if the light is strong.
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>>4415664 This was ISO 6400 at f2.0ish
Decent all things considered because of the jobsite lighting.
Anonymous
>>4414168 What would be good c-mount vintage lens that would cover a M4/3 sensor, and is shorter than 17mm focal length?
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>>4415765 Most wont cover m4/3 already, especially not wider than 17mm. The best you're going to get are lenses made for Super 16 film cameras and they dont come cheap.
Anonymous
this is shot wide open with a Fujian 35mm f1.7 on a pen mini 1st gen, or whatever is called.
Anonymous
>>4415830 I've also tried it on nikon 1, given they have a smaller sensor, but manual focusing on them gave me actual cancer, would not recommend even at my worst enemy
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>>4415830 Image looks good. Slight chromatic abberation around the mouth but other than that its crispy with a nice swirl distortion. Was this a C mount fuji lens?
That cosmicar will more than likely work but coverage will be heavily vignetted.
>>4415831 The only reason focusing works on my NX mini is there is a manual focus assistance mode that does like an 8x digital zoom on the screen.
I'm patiently awaiting for this Ernitec f/1.2 8.5-51mm TV Zoom Lens to arrive. Not sure what the coverage is but ive been eyeing other C mount lenses to give a try but im not 100% on the focal lengths. This zoom should give me some good perspective on what lengths im looking for.
Anonymous
>>4415857 C mount Fujian from aliexpress for like 20€
i wouldnt mind the heavy vignetting as long as i can just shoot in hyperfocal without hassle desu
Also yea, same reason why on the pen mini is doable, while on the nikon 1 is dreadful
Anonymous
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>>4416013 I have 3 fujian cctv lenses. the one I regularly use is the 35 1.7 ver. 1 and it goes well with apsc.
Anonymous
>>4415857 The picture was taken with a Canon EF 100mm f/2.
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>>4417705 Its from the ebay listing, thanks for a highly autistic (Probably wrong) post.
LOL
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>>4414168 Based on how incredible the Cosmicar 8.5mm lens was, i bought a cosmicar 25mm f1.4.
It so far has NOT been as stellar as the 8.5mm.
Not terrible but it just doesn't resolve like the 8.5 does. It does however fully cover a 1" sensor.
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>>4417969 Honestly, i don't hate it. But the lens distortion isn't super attractive and even stopped down a little it doesn't perform like you would think.
Anonymous
>>4417969 could I ask for some ooc uncropped pics of the cosmicar 8.5mm, and on which camera you using it ?
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>>4418008 Its a Samsung NX mini.
I'll drop a couple of raw images later today.
>>4414172 This ^^ pic is uncropped and about as close to OOC as you can get. I don't do much in the way of editing. Typically just a touch of exposure and clarity. These images aren't anything good. Just examples of what the optics are capable of.
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>>4418008 ooc shots incomming
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>>4418008 last ooc shot for yah
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>>4417969 couple more cosmica 25mm shots. It needs to be shimmed to hit infinity focus.
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>>4418101 Really needs to be stopped down at least to 2.8.
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>>4418102 wide open again but at high ISO
Anonymous
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>>4418099 >>4418100 The definition is waaay better than I thought.
Brought the fujian 35 with me today along with the more normal camera and lenses, and wide open feels comical
Anonymous
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>>4414260 you should. It's my main camera because I cant be assed to lug around 2+ pounds everyday in my active hobbies.
I picked up an 16mm izukar mini-tv to try out c mounts but I couldnt really come up with anything I liked. Very fun to experiment with though and I enjoy all the footage taken with it and its d mount super 8 lens brothers
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>>4418100 I bought some cheap C mount 5mm spacers and ground one down to get the Cosmicar 25mm to infinity focus. Didn't take much
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>>4414168 And another shot with the Cosmicar 8.5mm.
A one eyed dog to revive the thread.
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>>4414168 I may have found the winner.
Cosmicar 12.5mm F1.4.
Full coverage on a 1" sensor.
Bulid quality is top notch
Glass is substantial.
I need to grind another spacer to get infinity focus but i think we have a winner.
Image uncropped
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Anonymous
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>>4419889 >>4419890 clean af, love it
what's the fov like? equivalent to 40ish mm on ff?
on a 1inch sensor i mean
