<p> Thanks everyone for your responses, considering how broad and generic the question is, as Sally (“Might as well ask what makes a good book.”) and others pointed out; and as many others picked up, it ends up becoming a question of what do even mean by ‘good’, and whether is there any objective definition of good to work by, and so on. <br>
Also I found it interesting to see that for some people, the photo is deemed good, or successful, if they themselves liked it- “I have no audience, nor am I aiming my photos to one. A good photo is the one that satisfies me.” (Thomas K.) For others, it’s to do with the audience, or viewer response- “a good/effective photograph to me is one that stimulates an emotional reaction in the viewer” (Steve) or even “good photography pisses off all the right people.” (Lex) For others the two are inter-related- communication was mentioned a few times (Wouter, Arthur) which for me is very much about the photographers connection to their audience.</p>
<p>Like Wayne, I tend to think that, whatever their supposed ‘quality’ or formal attributes, some photos “are more important to some than any other photos in the world just because they exist as records.” But then this negates all the attention and care given by photographers to capture an image that matters to them, since the importance resides with the moment being captured, and the time/ people/ experiences it evokes- rather than it’s representation in a specific photograph.</p>