Neighbors - a new perspective - Bradley Schwartz




This photo is a modification of "Neighbors" in the G-Whiz Wide-Angle folder as suggested by Mark and Anker. I used Photoshop to reduce the perspective distortion and remove the utility lines.

Camera:   G1
Lens:   21 Biogon
Film:   Kodak Max 400
Exposure:   1/125, f/8
Flash:  
Support:  
Filter:  
Adjustment:  
Posted:   30-May-2002

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Comments

Interesting Comparison

Bradley, thanks for loading this. I went back and looked at the original, and it is an interesting demonstration of 'before and after' correction of perspective distortion. Also, removal of the utility lines helps greatly. I suppose if you have a 21mm lens, you'll want to know how to do this, as it'll distort all sorts of vertical lines. BTW, I note that there isn't any vignetting. Does that mean that you cropped it away? Or, did the lens not darken the corners of the negative, as I'm getting used to seeing with other 21mm shots? -- Anker

Anker Heegaard     30-May-2002 at 19:49

Good job

There is an art to removing the distortions caused by the wide angle lenses. I find the ability to do this a major advantage in the digital darkroom. I almost always use these techniques to 'straighten' out my images. My 'Hudson River' and 'Manhatten view' are good examples. The buildings at the top of the frame would normally be leaning way out at the corners. In my adjusted versions they look perfectly normal.

MARK MILLEN     30-May-2002 at 20:53

Fine effort. ..

Bradley, I, too enjoy viewing the before and after--effect of good photoshop work. Visual realities--can be altered for the good--as you have proven--with these two images.
Anker, I have noted only a slight bit of darkness around the edges of my images made with the 21MM--its oh so very slight. When I purchased the lens--it was almost soley because of images such as Bradley's and others here in the forum--there was no demonstrative V'ing.

Jerome Belthrop     30-May-2002 at 22:18

Vignetting

Thanks to all for the appreciative comments. Anker, There is minimal cropping on the original image and more on the modified version after the top corners were pulled out. I just looked through a large selection of shots with the 21mm, and I do not see any systematic darkening in the corners. There may be slight vignetting in some cases, as Jerome says, but I cannot say for sure. - Brad

Bradley Schwartz     31-May-2002 at 04:08

Distortion

The 21mm Biogon actually has low distortion, it is less than the 35mm or 45mm Planar (see www.zeiss.de). Even though straight lines appear to be at odd angles (most noticable with vertical lines), they remain straight across the entire image. The "problem" comes from the 90 degree diagonal field of view that causes an exaggerated perspective - the lens captures more than your eye can see. This effect also makes the background appear more distant. The opposite occurs with telephoto lenses that create a compressed perspective. - Brad

Bradley Schwartz     31-May-2002 at 07:00