My Frieze week - in pictures

Polly Morgan, artist: "Rachel Howard at Blain Southern (Dering Street, London). The show is called Folie à Deux, which I think is the term used to describe when two people go mad simultaneously. Howard’s used a limited palette on the nine line paintings, which hang very well together" Photograph: Peter Mallett/courtesy of the artist and Blain|Southern

Cornelia Parker, artist: "Roni Horn’s amazing glass pieces at Hauser & Wirth (Savile Row, London). They are about half a metre high with polished tops like liquid pools – very icy. It was like you were in Scandinavia" Photograph: Stefan Altenburger Photography Zürich/Courtesy the artist and Hauser & Wirth

Tracey Emin, artist: "The Riva boat at Frieze [Christian Jankowski’s The Finest Art on Water] – beautiful, stunning, polished mahogany – the kind of boat I would like to pilot" Photograph: Andy Hall

James Brett, founder, the Museum of Everything: "The main piece of work that stayed with me was Michael Landy’s Machine that Eats Credit Cards and Produces Art at Frieze. Though it’s pretty tongue-in-cheek and makes insider references, it’s quite truthful" Photograph: Sarah Lee

Nicholas Logsdail, director of the Lisson gallery: "The Gerhard Richter show at the Tate Modern. What I find so remarkable about him is his nonchalant matter-of-factness, especially with the earlier work. Every now and again he hits the spot with a great eureka moment, but it’s not a big deal. Truly a great figure" Photograph: Luke Macgregor/Reuters

Anita Zabludowicz, collector and gallerist, the Zabludowicz Collection: "One of my best new discoveries at Frieze was an artist called Wolfgang Breuer. For me that was quite a revelation. His work interferes with nature in a very discreet way, but it is very strong and poetic at the same time" Photograph: Courtesy the artist and Galerie Karin Guenther