When you watch the making of Superman returns it shows Brandon working out, and his muscles are quite impressive, they just don't show up well in that suit.
Also wasn't Christopher Reeve bulked up from training by Sylvester Stallone himself?
Dear Zombie_61: I kindly disagree with you. Christopher did indeed work out hard...
Yes, I'm aware Christopher Reeve, and Dean Cain, and Brandon Routh, all worked very hard to build up their physiques in order to play Superman. But, as I've commented earlier in this thread, they were in shape but they weren't in "Super" shape. It's not about their fitness levels, it's about muscle mass and how that will look in the Superman suit on-screen (regardless of whether it's a television screen or a movie screen). And when you look at the image I posted in
post #2525 it's easy to see that every actor except Cavill exhibited less muscle mass than the Superman in the comic art.
To be clear, I'm not attempting to say whether this is a good thing or a bad thing; that's for everyone to decide for themselves. I'm only making an observation.
...Start of the movie and middle - see the difference
Just in case you don't already know, movies are generally filmed out of sequence; it's only in the editing room that they put the footage together in the proper order in order to tell the story. With regards to
Superman (1978) I have no idea about what the actual filming schedule was, but they could have filmed those scenes months apart with the "middle" scenes filmed long before the "start" scenes. In your examples, I think the differences in lighting (i.e., studio lights versus natural sunlight) account for the differences in the appearance of Reeve's musculature.
...Now show the evolution of the comic version from back in the day to now and how ridiculously ripped he is drawn today.
And this is a valid point. In the comics Superman has generally been drawn as a tall person with a great deal of muscle mass, so there's an expectation that he will appear that way regardless of whether you're reading a comic book, or watching an animated or live action movie. His "ripped" appearance in more recent years is a reflection of the general public's perception of what a "fit" male should look like. At the time Superman first appeared in Action Comics #1 in June of 1938 a "ripped" physique (as we know it today) was the exception rather than the rule--you could be big and "beefy", but as long as you appeared to have large muscles the average person would think you were "fit". But that definition of "fitness" has changed over the years. If you were to look at photos of Arnold Schwarzenegger from his first Mr. Olympia win in 1970 and compare them to photos of his seventh Mr. Olympia win in 1980 you would see a difference in his level of definition because the definition (no pun intended) of physical fitness had changed, and having a thin layer of fat between skin and muscle was no longer "acceptable". As such, comic artists followed suit and drew Superman (and every other superhero) with more and more definition.
Now, the argument has been made that Superman doesn't need that level of muscularity because he's from Krypton and would be much stronger than the average human even with what we would call an "average" physique. I can't disagree with that, but Superman's creators Jerry Siegel and Joel Shuster chose to represent him as having an above average amount of muscle mass, so that's the standard that was set. Fans can debate the "reality" of it as much as they like, but it is what it is.