FS7: Mitakon F/.95 35mm Lens & FS&: A Happy Marriage

basspig

Veteran
After an 8 week wait for special order item, B&H finally delivered my Mitakon F/.95 lens.

This is a very unique lens. It can so some amazing things.

First, it's capable of off-the-wall absurdly shallow DoF. Want to blur a background? This is the lens to do it.

Second, it's low light capability seems more than the numbers suggest. Let me elaborate: When I set up the other night to shoot a star field, the results were about as I expected: twice as bright as my f/2 Rokinon prime. But then, after monitoring on the external monitor, I looked in the viewfinder to check something then I noticed it: the "ND 1/4" indicator was there. I shut off the ND filter and suddenly night became day! I was now staring at a blue sky full of stars. At midnight.

Why was the ND filter on in the first place? Because the dim lighting of my studio desk lamp, bouncing off some papers on the desk, re-bouncing off the white ceiling tiles, was illuminating the room too brightly for this lens to be wide open. Adding ND 1/4 gave me a proper exposure--in low light. At 500 ISO. Point the camera into a dark corner that is too dark for the eye to see clearly and it's bright. Outdoors on a moonlit night, it produced a fairly bright picture. Moonlight cast upon a boulder registered 60 IRE off the rock.

Yuki-bird at Karaoke Night.00_00_41_13.Still001.jpg302_0179.00_03_11_18.Still005.jpg302_0179.00_03_16_17.Still006.jpg302_0191.00_03_12_16.Still001.jpg302_0191.00_03_33_16.Still002.jpg

The video below has apertures varied from f/1.4 to f.95.

The lens is small, but heavy. Heavier than you would expect, compared to most DSLR lenses. It has a solid feel, smooth operation and good build quality.

You do have to be careful about off-axis light getting into the lens however. It will create internal reflections. French flags are obligatory when working with any overhead lights.

Stopped down a bit, it would make a great lens for shooting streetcorner dialog scenes where you want to anonymize the city and just have a menagerie of light in the background. The creative possibilities with this lens are amazing.
 
Second, it's low light capability seems more than the numbers suggest. Let me elaborate: When I set up the other night to shoot a star field, the results were about as I expected: twice as bright as my f/2 Rokinon prime. But then, after monitoring on the external monitor, I looked in the viewfinder to check something then I noticed it: the "ND 1/4" indicator was there. I shut off the ND filter and suddenly night became day! I was now staring at a blue sky full of stars. At midnight.

Sounds exactly as numbers suggest. Difference between f/0.95 and f/2 is 2 stops, so it is 4 times faster, not "twice as bright". Twice as bright is just one stop, not two.
 
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Not to judge the quality of this lens on speed alone, however, my Canon EF 1.4 lenses (24 1.4L, 35 and 50mm 1.4 Sigma Art), when combined with the metabones speedbooster, achieve a similar DOF and let it about the same amount of light.
 
I have often pondered if a full frame f/.95 existed, how fast would it be on a speedbooster. That would be amazing. Imagine something like f/.5 ... mind-boggling.
 
I could be mistaken but from what I remember, the metabones speedbooster can't take advantage of anything faster than a f1.4. You can use faster lenses but it won't let in any additional light past f.95 or something like that.
 
If the brightness boost is a matter of reducing the size of the image circle, thus concentrating the light in a smaller area, then it should not matter how fast the lens is. But the lens has to be a FF 35mm, not a S23 or APC format for this to work.
 
There are physical limitations of the adapter being able to clear very wide apertures. Much like the reason you get a cats eye effect in the bokeh when using ultra wide apertures.
 
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