[Kit] Architecture and cityscapes

[MGohzxc]

To clarify, it was me who asked wildcat to answer the questions on my behalf as I was tied down with work.

and thanks night86mare for chipping in as well

I will try to elaborate on ways to minimise distortions later in the day..... though a hands on session would be great.

Hi Uncle Wildcat, Uncle Night86mare and Uncle Kit,
Thanks for the reply and I quite understand most of it but Uncle Night86mare on paragraph 2 about making the sensor vertically parallel to the buildings. How to do it and can you help me with an example. I am not tall and I can make the horizontal straight but I will have to tilt my camera upwards. So when tilting upwards, I maybe have some other perspective distortion?

01) OK, in picture #36 or #37, can Uncle Kit tell me how you do it.
02) If you take such pictures on buildings, you will still have to go to processing and do all you perspective adjustments no matter what. Is this correct?

I ask because I am very angry with my pictures especially do not get it straight. If you get it straight on the right than the left is tilted.:sweat:

Sorry for asking so many questions. I have to go for my dance rehersal now. Have performance tomorrow for Chinese Festival. I will try to read the reply tonight. Thank you all.
Bye

 

[wildcat]

Hi Uncle Wildcat, Uncle Night86mare and Uncle Kit,
Thanks for the reply and I quite understand most of it but Uncle Night86mare on paragraph 2 about making the sensor vertically parallel to the buildings. How to do it and can you help me with an example. I am not tall and I can make the horizontal straight but I will have to tilt my camera upwards. So when tilting upwards, I maybe have some other perspective distortion?

01) OK, in picture #36 or #37, can Uncle Kit tell me how you do it.
02) If you take such pictures on buildings, you will still have to go to processing and do all you perspective adjustments no matter what. Is this correct?

I ask because I am very angry with my pictures especially do not get it straight. If you get it straight on the right than the left is tilted.:sweat:

Sorry for asking so many questions. I have to go for my dance rehersal now. Have performance tomorrow for Chinese Festival. I will try to read the reply tonight. Thank you all.
Bye

That means you are worried about keystone effects of building falling inwards (if tilted up) or falling outwards (if tilted down). You have the spirit leveller already, so just make sure both bubbles are "up". One bubble will make you not tilt to the left or right, the other bubble will make you not tilt up and down.

I believe Kit likes to get everything correct from camera (and now I do too, because I am too lazy to do corrections in post processing) so we use the spirit leveller to make sure our cameras are "straight up" before we snap.

The problem with that is if your lens is not wide enough, then you will be forced to tilt camera up and what I learnt from night86mare is... "pan". You can pan horizontally with your camera in portrait position to get more top and bottom.

Hope that helps. It's easier to explain this and if you're going Dingaroo's outing this weekend, most of the guys who have spirit levellers will be able to explain to you how to use it properly.

 

[wildcat]

To clarify, it was me who asked wildcat to answer the questions on my behalf as I was tied down with work.

:cry: I kena bully.

lucky got night86mare come cover also :sweat:

 

[- nAstAr -]

Thanks for the reply, Kit, Wildcat & Night86mare

Actually what I wanted to know is how to avoid vertical distortion if we use UWA. I tried to use UWA last Sunday, and I notice most of my picture are distorted. If I keep the background straight, then the foreground become distorted n vice versa.
That’s why I’m very curious about photo #038, how come the near object (columns) and the faraway ones (the high rises) and even the shophouses are all straight.

for vertical perspective distortion or horizontal perpective distortion, you can position yourself near a window. if you are standing at angle to window, you will notice that the bottom ledge doesn't seem exactly straight - this is because the ledge is coming towards you, or going away from you. some sort of parallax error. similarly when you look up, the two sides of the window will converge at the top.

Isn’t this happen because 3 dimensional object will always have a vanishing point? Is this thing also considered as distortion?

I will try to elaborate on ways to minimise distortions later in the day..... though a hands on session would be great.

Yes...please. I really want to learn how to produce a correct (not distorted) images with the camera

:cry: I kena bully.

Nah....it means you're knowledgeable and willing to share

- nAstAr -

 

[- nAstAr -]

So if you need to avoid curvilinear distortions, try not to have straight lines running across the edges of your frame if you can. Otherwise, you'll have to correct them when you process your photos.

Ok, noted
Thanks for the tips!

 

[night86mare]

Isn’t this happen because 3 dimensional object will always have a vanishing point? Is this thing also considered as distortion?

it distorts reality, does it not?

3d objects also have parallel lines present. i believe the idea of 2 parallel lines is that they don't meet. therefore, they don't have a vanishing point. but based on how you position yourself (or the camera), they can meet because of double parallax error. or diverge. depending on how you look at these 2 lines.

 

[Kit]

That’s why I’m very curious about photo #038, how come the near object (columns) and the faraway ones (the high rises) and even the shophouses are all straight.

If you kept the camera level, all vertical straight lines in the scene will appear straight. Distance is irrelevant.

 

[Kit]

Hi Uncle Wildcat, Uncle Night86mare and Uncle Kit,
Thanks for the reply and I quite understand most of it but Uncle Night86mare on paragraph 2 about making the sensor vertically parallel to the buildings. How to do it and can you help me with an example. I am not tall and I can make the horizontal straight but I will have to tilt my camera upwards. So when tilting upwards, I maybe have some other perspective distortion?

01) OK, in picture #36 or #37, can Uncle Kit tell me how you do it.
02) If you take such pictures on buildings, you will still have to go to processing and do all you perspective adjustments no matter what. Is this correct?

I ask because I am very angry with my pictures especially do not get it straight. If you get it straight on the right than the left is tilted.:sweat:

Sorry for asking so many questions. I have to go for my dance rehersal now. Have performance tomorrow for Chinese Festival. I will try to read the reply tonight. Thank you all.
Bye

#36 and #37 are relatively easier to handle where perspective control is concerned. You just beed to level your camera with a bubble leveller but you do have to be very very precise doing that.

 

[Kit]

hihi..may i ask for pic #38, will you be able to see sunset and what hdb block is that?

You will not be able to see the sunset since the sun is shinning from behind. Its the HDB directly above the food centre.

 

[allenleonhart]

kit i know this place!
u stay there? cause i'm dropping by there like... now!:bsmilie:

 

[Kit]

Nope, I don't stay there.

 

[Kit]

#194

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[Kit]

#195

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[MGohzxc]

Hello Uncle Kit,
Thank you for taking time to explain so much. Now I learn a lot from your pictures. If the photo on landscape especially there are buildings around, everything thing must be almost perfect. If the building is tilted or too much distortion and not corrected, the picture will not look good no matter how well you compose the photo. This is what I learn now and will try my best.

Thank you very much...

 

[Kit]

#196

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[Kit]

#197

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[Kit]

Good morning Jurong!!

#198

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[candycaine]

Kit,

For some reason, I love your school interior and basketball court photos (are those inside a school too? I've seen some schools with such sheltered yet outdoor courts.) Maybe it's because I'm still schooling and get tired of seeing the same dreary school environment that I need such photos to help me appreciate the aesthetic beauty of such places

Also, I think reading your thread is a great reminder for me that it is often better to get the composition right while shooting rather right rather than shooting sloppily and then trying to fix things in post production, because some things like keystone are a nightmare to correct.


Pleasure to follow your thread,
AC

 

[Kit]

Thanks

Ya, those basketball courts are within the school premises. These are actually photos from my assignments. To get everything "right" at the time of taking the photos means that I can avoid lengthy editing time which is unnecessary. I typically submit around 50-60 photos per assignment of this nature so avoiding unnecessary editing work makes economical sense(cents) too.

 

[soulFLY]

Good morning Jurong!!

#198

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Beautiful Kit!

Love the morning light..