Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Is this lens made in Japan?
Document: This lens attached to my Sony a77 is a match made in heaven. For low light shots, this lens is amazing. For portraits at 1.4, the DOF is great, creamy bokeh, sharp subject. Manual focus is easy and smooth, but auto focus is amazing. This is the only lens I own with a HSM focus system and it is amazing and quiet. The auto focus hits quick with the a77 and is 9/10 focused on the correct area.
Love this lend. Heavy duty and well made. Pretty quiet when focusing. Creates a beautiful bokah effect in background but can be difficult to focus properly.
This is the first outside party lens I have purchased, and I may look at the upcoming 85mm f/1.4 lens by Sigma also if it proves to be as good as the 50mm.
Solid construction, sharp focus, silent motor, excellent bokeh, beautiful pictures! couldn't be happier! I've been shooting with the Sony 50mm f/1.8 and the motor is loud and clunky, focusing is slow, the pictures are good but just nothing compared to the quality of this lens.
The resulting photographs are superb. I intend to purchase Sigma photographic products again and again. And I intend to return to Amazon as my source.The lens arrived quicker than I had expected. It was in excellent condition. I feel that the price was highly acceptable. The bottom line:  for me, this was a FIVE STAR deal in every way.Thank you much,Neil Wilson
From f2.8 on the Sony 50mm f1.4 is its equal and the Canon version is close. I choose this lens over my cz24-70mm f2.8 mostly due to the superior DOF and low light capability.The only thing about this lens that might be a draw back is that it only only goes up to f16. If I need higher than that I have to use my Sony 50mm.
I bought this lens as my 6th 50mm lens. Granted 3 are Canon mount and the other three are Sony Alpha mount. I bought it because it was said to be sharp wide open - and it is! The only other 50 that is so is the Canon 50mm f2.5 [quasi] macro.I love the color, contrast and sharpness of this lens on my A700. It is fast focusing and hits more than any other 50mm that I own.
Having feared Sigma's QC, I felt hesitant to purchase. This lens works perfectly and is the companion to my cz135mm. lens. I've had to take in my Nikon 70-200mm VI, and 24-70mm zooms to the repair center, the first for back focus, and the later for the known abrasive sound from the zoom ring, and for front focus. Both now are superb. The Sigma has been through two shoots and performed as expected.
I am TOTALLY PLEASED by this excellent lens. It is FAR MORE than I had expected. I do appreciate the Sigma people for designing, manufacturing and presenting it to the photographic public.I am an available light photographer. Although I do occasionally use flash, I generally prefer the much greater convenience and  practicality of being able to photograph without the additional complications, limitations and expense of additional lighting equipment.
I really wanted to like this lens. It's solidly built and have a good weight to it. And just look at the size of the front glass element. But the AF had significant inconsistent back-focus issues that micro-adjustment could not fix. Maybe I could have sent the lens along with my camera to Sigma for fine tuning... but I do not possess that level of patience. I ended up returning the lens and bought the sigma 35mm f1.4 instead.
Answer: Yes