Can you guess the lenses used by looking at the pic?

[Adeel Khan]

Can you guess the lenses used to take the pic?

https://www.facebook.com/photo.php?fbid=10150871927207142&set=a.10150175402057142.303419.33036112141&type=1

[Hankosaurus]

Can you guess the lenses used to take the pic?
https://www.facebook.com/photo.php?fbid=10150871927207142&set=a.10150175402057142.303419.33036112141&type=1

Hello Adeel.

Welcome to the JJMPF! Pleased to meet you.

I can't guess which one with certainty. I am thinking four or five. However, one lens could have taken them all, even without zooming. If one stays at the same point and crops the field of view, it will look strikingly like having zoomed if all prints are the same size. Of course, grain and noise pick up and sharpness will fall off with increased cropping, but with such small thumbnails, who would know?

Curious what the answer will be.

Happy day.

[neelabh75]

18-55 kit lens 

[Adeel Khan]

Thank You so much for the warm welcome.

The answer is:

http://www.facebook.com/photo.php?fbid=10150881412937142&set=a.10150175402057142.303419.33036112141&type=1&permPage=1

"However, one lens could have taken them all, even without zooming. If one stays at the same point and crops the field of view, it will look strikingly like having zoomed if all prints are the same size."

I believe there would be a different feel with a wide lens and a tele lens. Using a wide lens gives a distortion, (like a bulge) whereas a tele lens would give a 'deep effect' even if you crop the pictures.

Regards
Adeel Khan

[VikramF]

I believe there would be a different feel with a wide lens and a tele lens. Using a wide lens gives a distortion, (like a bulge) whereas a tele lens would give a 'deep effect' even if you crop the pictures.

You'll see that perspective isn't distorted at all if you crop the same scene on each and every one of those 8 frames (I'm assuming that's what you meant by 'deep effect'). So for example if you crop from the left edge of the beemer to the right of the car parked opposite it in a 3:2 ratio across each of those frames, you'll find that all the pics look identical. Try it!

[Hankosaurus]

Hello again, Adeel.

Vikram is exactly right. Try the experiment yourself. You will believe it once you see it. It's a good learning point too. There can only be one perspective from any given point in space. The angle of view can change, but the perspective cannot.

Happy day.

Henry

I believe there would be a different feel with a wide lens and a tele lens. Using a wide lens gives a distortion, (like a bulge) whereas a tele lens would give a 'deep effect' even if you crop the pictures.

You'll see that perspective isn't distorted at all if you crop the same scene on each and every one of those 8 frames (I'm assuming that's what you meant by 'deep effect'). So for example if you crop from the left edge of the beemer to the right of the car parked opposite it in a 3:2 ratio across each of those frames, you'll find that all the pics look identical. Try it!

[Adeel Khan]

Thank you so much for pointing out my fallacy.

Because of the small size of the pics I cannot crop them well to experiment, so i tried cropping another group of pics shot with different zoom lenses.

http://www.google.co.in/imgres?imgurl=http://www.nikonusa.com/en_US/IMG/Assets/Lens-Finder/Images/focal_pop.jpg&imgrefurl=http://foros.toxico-pc.com/showthread.php%3Ft%3D28955%26page%3D4&usg=__R3q-R9eUybTp3Duc_7UDY5h2K0c=&h=470&w=698&sz=136&hl=en&start=2&zoom=1&tbnid=gEo2yHW697Q1jM:&tbnh=127&tbnw=174&ei=mKj9T7LkIYn5rQfM773MBg&prev=/search%3Fq%3Dfocal%2Blength%2Bexamples%26hl%3Den%26sa%3DG%26biw%3D1366%26bih%3D667%26tbs%3Dsimg:CAQSWhpYCxCo1NgEGgIIBAwLELCMpwgaMQovCAESCRYbGSAXIR4dHBogi854BiSYWFbp5pDGqY6NunZPvgddLcxFvPdImflsZEcMCxCOrv4IGgoKCAgBEgTS5UiaDA%26tbm%3Disch&itbs=1&iact=hc&vpx=356&vpy=185&dur=83&hovh=184&hovw=274&tx=147&ty=109&sig=110226971472721038763&page=1&ved=1t:429,r:1,s:0,i:57

And I cannot tell the difference after cropping.

However, I downloaded a pic taken through a wide angle lens (I can tell by the barrel distortion caused by the wide angle lens) and I cropped it.

http://www.google.co.in/imgres?imgurl=http://www.photographymad.com/files/images/wide-angle-goat.jpg&imgrefurl=http://www.photographymad.com/pages/view/wide-angle-lenses&h=391&w=620&sz=118&tbnid=dXnDHsLpEVhk1M&tbnh=178&tbnw=283&prev=/search%3Fq%3Dwide%2Bangle%2Blens%2Bphotography%26tbm%3Disch%26tbo%3Du&zoom=1&q=wide+angle+lens+photography&usg=__ozgbQ2-WsdPCKMmYKapUjizvDyg=&hl=en&sa=X&ei=5aH9T73fO8_KrAfg1P3dBg&ved=0CF8Q8g0

Even after cropping it from the side, I can still feel the distortion in the image, and tell it's taken with a wide angle lens.

It makes perfect sense to me that "from any given point in space there can be only one perspective. " But does not my lens change my perspective?

Kindly clarify these doubts I have regarding the basics of focal length and perspective.

[Hankosaurus]

It makes perfect sense to me that "from any given point in space there can be only one perspective. " But does not my lens change my perspective?

Hello again, Adeel.

The lens can never, ever change the perspective. It's a law chiseled into stone somewhere, or it should be. Only moving the location of the taking lens can do that.

Perspective: How things look from a single point in space.

(The various points on the face of a fast wide open lens are arguably seeing from slightly different points in space, and thereby have slight variations in perspective, but for all practical purposes a lens may be thought of as a single point in space, not a group of closely located points.)

A short focal length lens can provide a wider angle of view. A telephoto can provide a narrower angle of the same view as that which was seen by the wide angle lens. Only by moving the lens from one point in space to another can we change the perspective.

This is why the cropped image looks as though it had been shot with a longer lens.