the last word

Today I tested for focus curvature with the matched 1.7 X teleconverter (TC), using Roger Cicala’s  test method. I found a flat surface with some texture, set the lens to wide open, In order to show the in-focus area, I brought the image into Photoshop, and selected Filter>Stylize>Sharpen Edges.       These are excellent… [Read More]

In the previous post, I showed you Siemens star images made with the Nikon 135/1.8 Plena on the Z7 with the star in the center of the frame. In this post, the images comes from the lower left corner. Edelkrone Tripod X Pro Arca Swiss C1 Manual exposure EFCS ISO 64 Delay set to 2… [Read More]

I’ve had this lens a while, and it’s been great. I was recently asked to test it. So here goes. The particulars: Edelkrone Tripod X Pro Arca Swiss C1 Manual exposure EFCS ISO 64 Delay set to 2 seconds Six shots per f-stop Target centered Stops: f/1.8, f/2, f/2.8, f/4, f/5.6, f/8, f/11 Shutter speeds:… [Read More]

LensRentals has loaned me a Nikon 58 mm f/0.95 Noct for testing. For the past couple of weeks, I’ve been reporting on the individual tests that I’ve been doing. The lens needs to go back soon, so it’s time for me organize my thoughts. This is an outstanding lens. I’ve worked with f/0.95 lenses before,… [Read More]

LensRentals has loaned me a Nikon 58 mm f/0.95 Noct for testing. I tested for illumination uniformity at f/0.95, f/1.4, and f/2. I focused the lens on infinity, and made four exposures of a white wall about three feet away with the camera turned 90 degrees around the lens axis between each shot. I brought… [Read More]