Hi All,

I will give you the big reveal about which lens is which after I get a few comments, but the gist of it is I shot the same flower using 3 different lenses all at 100mm and set to f8 1/100. The ISO was a little different because the sun came in and out a little. It is not a perfect apples to apple test because I adjusted each shot in post to get the best look to my eye, rather than doing everything exactly identically. I did turn on lens correction in lightroom for each lens.

Two of the lenses are already 'keepers' and the 3rd one I am trying out. I chose 100mm because it was the only focal length all 3 lenses had in common.

I am interested in image quality, particularly sharpness. If you could rank them from best to worst I would appreciate the feedback.

Very clever and funny. But seriously. I have something called a strap wrench, a rubber strap that is attached to the handle at one end and the loose end fits into a slot on the handle. You can adjust it to size. It also is handy to open jar lids. It resembles an oil filter wrench. Lastly, I learned a trick years ago when trying to attach a fine thread object, turn it backwards until you hear or feel a click, then rotate the object in the proper direction, in this case a lens filter. I have never had a filter get cross threaded using this technique.

This effect is called keystoning because it resembles a keystone. It is caused by parallax. Simply the lens’ first element is on a angle to a perpendicular surface. That is why buildings look as if they are falling backwards.
To correct this phenomenon, you need a Tilt-Shift lens. It will bend the image path to correct for parallax. Because Of the mechanism this lens tends to be a little more expensive than a lens of comparable focal length. I recommend renting this lens first. Playing with the lens and it’s mechanism does take some time. Using a tripod for camera and lens is a must. You will have to “jigger” the mechanism to get the effect you seek. Be Patient! It does take some time. Since I shoot Canon, I use a Rokinon 24mm Tilt Shift. It does very nicely for tall buildings in New York City and elsewhere. So I’m not sure what would work for your Nikon. I have gotten nice results with this lens for photographing model trains and street scenes. However, it is not good for macro photos of flowers or insects.

Happy Shooting!