I was looking for options to start taking photos of the stars and asteroids, that’s when I came across this lens. I did not want to spend a lot on a lens that I was going to use occasionally. Prime lenses can cost a fortune! Specification wise this lens satisfied what I was looking for i.e. short focal length and small f number. In simple terms we need these parameters to be like that to allow our camera shutter to be open for longer time, gathering maximum light. You need it to shoot dim objects in dark. For example I keep the shutter open for 8-10 seconds for each photo on my APSC camera, if you have a full frame camera you can do it for 12-15 seconds with better result.
1. I bought this lens for EUR 70 in Germany. Considering lenses that are sold specifically for astro-photography may cost way higher, this was cheap.
2. The build quality of the lens is good, it does not feel like a cheap product in hand.
3. The results were satisfactory. I have used it to take photos of Perseids as well as in outdoors during day time. You check the sample photo links below. I think this can be used for portraits as well, something that I have not tried. Because it provides good background blur.
1. The cover that comes with lens is very cheap plastic. I know I am going to keep this lens, so may be I will get a new one. Costs about a Euro in eBay.
2. This lens flares badly when artificial light comes from the corner. While using for astro-photography you need to be sure you do not have some stray light falling on it. However that is the first rule when you are trying to shoot night sky. I recommend using lens-hood like this.
I just realized this lens is three times more expensive in India! Neewer 35mm f1.7 is sold at normal price though. If you can, then order f1.2 from abroad or let me know if I can help you if you’re really really into it. 🙂