The eclipse riddle -- Seeing surfaces -- The disappearing act -- Spinning shadows -- Berkeley's shadow -- Para-reflections -- Para-refractions : shadowgrams and the black drop -- Goethe's colored shadows -- Filtows -- Holes in the light -- Black and blue -- Seeing in black and white -- We see in the dark -- Hearing silence.

If you stare for a period of time at a scene which contains movement in one direction, and then turn your attention to an object in a scene which contains no movement, this object will appear to move in the opposite direction to that of the original movement. The effect can be easily achieved by attaching a piece of paper with a spiral drawn on it to the spinning turntable of a record player, and then turning the turntable off while (...) continuing to look at the spiral (see Frisby 1979, pp. 100-101 for a detailed descrip- tion of how to bring this about). But the illusion of movement can also occur when looking at a waterfall, for instance, and turning one's attention away from the waterfall to a stationary object such as a stone; hence its name - the 'Waterfall Illusion'. (shrink)

This book presents an original theory of the nature of pictorial representation. The most influential recent theory of depiction, put forward by Nelson Goodman, holds that the relation between depictions and what they represent is entirely conventional. Flint Schier argues to the contrary that depiction involves resemblance to the things depicted, providing a sophisticated defence of our basic intuitions on the subject. Canvassing an attractive theory of 'generativity' rather than resemblance, Dr Schier provides a detailed account of depiction, showing how (...) it illuminates and resolves many of the enigmas of pictorial representation while remaining true to our basic intuitions on the subject. (shrink)

An implication relation between pictures is defined, it is then shown how conjunctions, disjunctions, negations, and hypotheticals of pictures can be formed on the basis of this. It is argued that these logical operations on pictures correspond to natural cognitive operations employed when thinking about pictures.

Despite its admirable bottom-up methodology, Roy Sorensen's Seeing Dark Things (OUP, 2008) raises difficult theoretical questions concerning the metaphysics and perception of absences. Metaphysical difficulties include how to individuate, count, locate, and classify absences, and what determines their features. Perceptual difficulties include how to distinguish experiences of absences and presences, especially when nonveridical, and what subjects contribute to perceptual experience according to Sorensen's causal theory. In addition to articulating these difficulties, this paper also presents and explores, on Sorensen's terms, an (...) alternative account of silence. (shrink)

In this article we address the question of how many impossible images Escher produced. To answer requires us first to clarify a range of concepts, including content, ambiguity, illusion, and impossibility. We then consider, and reject, several candidates for impossibility before settling on an answer.

Images have power - for good or ill. They may challenge us to see things anew and, in widening our experience, profoundly change who we are. The change can be ugly, as with propaganda, or enriching, as with many works of art. Sight and Sensibility explores the impact of images on what we know, how we see, and the moral assessments we make. Dominic Lopes shows how these are part of, not separate from, the aesthetic appeal of images. His book (...) will be essential reading for anyone working in aesthetics and art theory, and for all those intrigued by the power of images to affect our lives. '...tightly focused and carefully argued... an exceptionally interesting contribution to the philosophy of art: it contains subtle, concise, and convincing discussions of a number of difficult concepts and contentious doctrines... lucid and meticulous'. (shrink)

I offer two, complementary, accounts of the visual nature of representational picturing. One, in terms of six features of depiction, sets an explanatory task. The other, in terms of the experience to which depiction gives rise, promises to meet that need. Elsewhere I have offered an account of this experience that allows this promise to be fulfilled. I sketch that view, and defend it against Wollheim's claim that it cannot meet certain demands on a satisfactory account. I then turn to (...) Wollheim's own view, arguing that it suffers from crucial obscurities. These prevent it from meeting the explanatory commitments I describe, and are only exacerbated by the demands Wollheim himself imposes. (shrink)

Intuitively, we often see absences. For example, if someone steals your laptop at a café, you may see its absence from your table. However, absence perception presents a paradox. On prevailing models of perception, we see only present objects and scenes (Marr, Gibson, Dretske). So, we cannot literally see something that is not present. This suggests that we never literally perceive absences; instead, we come to believe that something is absent cognitively on the basis of what we perceive. But this (...) cognitive explanation does not do justice to the phenomenology. Many experiences of absence possess immediate, perceptual qualities. One may further argue that the ability to detect certain absences confers strong adaptive advantage and therefore must be as primitive and fundamental to humans as seeing positive things. I argue that we can literally see absences; in addition to representing objects, perception represents absences of objects. I present a model of seeing absence based on visual expectations and a visual matching process. The phenomenon of seeing absence can thus serve as an adequacy-test for a theory of perceptual content. If experiences of absence are possible, then we have another reason (following Siegel) to reject the view that perceptual content is restricted to colors and shapes. Furthermore, if the proposed account is correct, then we have grounds for dissociating seeing absence from other imagery-based phenomena termed “perceptual presence-in-absence” (Noë, Macpherson). (shrink)

There is a long tradition in philosophy of using a priori methods to draw conclusions about what is possible and what is necessary, and often in turn to draw conclusions about matters of substantive metaphysics. Arguments like this typically have three steps: first an epistemic claim , from there to a modal claim , and from there to a metaphysical claim.

Some (Podro, Lopes) think that sometimes our experience of pictures is ‘inflected’. What we see in these pictures involves, somehow, an awareness of features of their design. I clarify the idea of inflection, arguing that the thought must be that what is seen in the picture is something with properties which themselves need characterising by reference to that picture’s design, conceived as such. I argue that there is at least one case of inflection, so understood. Proponents of inflection have claimed (...) great significance for the phenomenon. But what might that significance be? Inter alia, I consider Lopes’s proposal that inflection solves a central problem in pictorial aesthetics, the ‘puzzle of mimesis’. I argue that the puzzle, and the proposed solution, both turn on aspects of Lopes’s conception of seeing-in. Other accounts of seeing-in can make no sense of either. I further argue that the phenomenon of inflection itself puts pressure on the sort of account Lopes offers. Thus it is hard to offer a view which both holds that inflection occurs and is able to make clear sense of why it matters. (shrink)

Prize: One hundred dollars to the first person who identifies a picture of a logical impossibility. I may be willing to pay more for the painting itself. This finder’s fee is simply for pointing out the picture. Let me explain more precisely what I seek.