There's no prescribed amount that you need to write about an image. I always adopt a 'realistic' or 'reasonable' approach where the amount I write about each example is proportionate to its contribution to the writer's overall argument. I prefer to write about how readers will realistically respond to the article, rather than making up bs to fill space.
In this article, I didn't consider the main visual that significant. When I consider how much to write on each aspect of the article, I think about my personal response to the language. If something really emphasises the writer's arguments or really jumps out at me then I'll spend more time on it. In this case, I really didn't respond that much to the visual. I considered it more of a cosmetic addition designed to reiterate the technology theme of the journal and article. Consequently all my discussion on the visual was pretty much weaved in with the analysis of other more important areas of the text. I think I mentioned something about the chip in the brain and related that with the 'evolution of humankind' and 'homo super-sapien' examples.
I also spent some time discussing the visuals in the banner (the computerised interface etc.). Again this wasn't that important overall but it was a good way to distinguish an essay from the pack.
@JVG
I think your example goes too far in terms of discussing the visual. The analysis itself is great and it is written very well, however, a lot of it is highly unrealistic, both in terms of likely audience reactions and what you can writer under time constraints. At times it almost appears tongue-in-cheek, as though you are trying to exhaust absolutely everything there is about the visual when really it is only a minor aspect of the article. For example "The three levels of ‘binary squares’ grow in size as they are further away from the chip, indicating that technology will gift individuals with the ability to exponentially expand the amount of informative resources at their disposal." How many readers are actually going to be influenced by, or even consider the increasing size of the binary squares?
Hmm so when you have to describe the impact on readers you simply refer to them as readers and not the specific intended audience (younger generation in your view)
If the example you are analysing is specifically targeted at a certain audience group or is going to elicit a different emotional response from different groups then I think it is worth talking about that specific group. I think it makes your analysis more precise and shows greater insight into how language can have differing effects on certain readers. It's better then generalising the effect language will have on readers. In this article, I made a number of allusions to how Voxi was trying to establish rapport with younger readers and how the article deliberately appealed to the younger generation who are typically more curious, progressive and adventurous.
Btw, do you think there is any significance in the structure of this article as a web page? If so, how would you discuss the persuasiveness of it?
I don't think the article is 'structured' as a web page. I think it IS from a web page because it is an online article.The computerised interface, however, is deliberate.
I considered it worth discussing. I felt like the fact he was responding to a podcast by writing an online article was a testament to how technology is reshaping our lives. It shows how technology has opened new mediums of communication beyond the printed press. It also reinforces his argument that if you don't accept technology soon, you are going to be left behind.
Another thing you might want to mention is that the placement of the article in an online journal may be questionable. If the article aims to convince those who are intimidated or bewildered by new technology then it may not be so successful given anyone reading the article has already accepted technology to some extent. Including a short statement about this in your conclusion is a great way to sum up and shows some intelligent insight into the context of the article and its intended purpose.