365 Day 104 - Distortion
AnneB50
Hello, I'm Anne, I joined a little while back but have only just got round to adding some photos to my portfolio. Hopefully this is just the start! I'm really looking forward to hearing folks' comments on my images, anything that you think will improe them will be welcome.
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365 Day 104 - Distortion
16 Apr 2014 6:33PM Views : 447 Unique : 380I'm very well aware of the distortion I get with my D7000 and 24 - 120 lens when photographing architecture but thought I'd have a go with the little compact to see what happened. I was in the shopping mall at Cribbs Causeway, standing on the upper level looking down on escalator and the coffee area below and had expected the verticals to be pretty much ok but they are really not. Attempted 'auto' corrections in Lightroom produced weird results, I'm not sure what reference point the software tries to use but this is as good as it got correcting it manually. Think I will stick to the D7000 for this sort of thing in the future!
Comments
What you have here is effectively 'converging verticals' but converging in a downward direction as you took the shot from above.
I very rarely correct verticals because unless the front element of your lens is absolutely vertically parallel to the vertical plane of your subject when you take the shot, some distortion, at least, is inevitable and attempting to correct it will, without fail, induce distortion somewhere else.
It might not show greatly and provided the tweaking's not too severe you'll very likely get away with it but it will exist.
Fairly obviously, with this shot, attempting to correct the convergence; ie, pulling the bottom left hand corner outwards, will cause the counters to become distorted.
As for Lightroom's correction tool; like yourself, I've never been impressed by it.
As a global approximation of what should be vertical or level, I suppose it's OK but if I'm going to make a (rare) adjustment at all, I'd rather use Photoshop and do it myself.
I very rarely correct verticals because unless the front element of your lens is absolutely vertically parallel to the vertical plane of your subject when you take the shot, some distortion, at least, is inevitable and attempting to correct it will, without fail, induce distortion somewhere else.
It might not show greatly and provided the tweaking's not too severe you'll very likely get away with it but it will exist.
Fairly obviously, with this shot, attempting to correct the convergence; ie, pulling the bottom left hand corner outwards, will cause the counters to become distorted.
As for Lightroom's correction tool; like yourself, I've never been impressed by it.
As a global approximation of what should be vertical or level, I suppose it's OK but if I'm going to make a (rare) adjustment at all, I'd rather use Photoshop and do it myself.
