Archives for 2024

LensRentals has loaned me a Hasselblad XCD 135mm f/2.8 lens for testing. Today I tested for focus curvature, using Roger Cicala’s test method. I found a flat surface with some texture, set the lens to wide open, and got this image: In order to show the in-focus area, I brought the image into Photoshop, and selected… [Read More]

LensRentals has loaned me a Hasselblad XCD 135mm f/2.8 lens for testing. I tested the XCD 135/2.8’s out of focus (OOF) point spread functions (PSFs) by focusing the lens to minimum focus distance (MFD) and aiming it at a LED mini flashlight about 25 feet away. With mechanical shutter at three high shutter speeds:    … [Read More]

LensRentals has loaned me a Hasselblad XCD 55mm f/2.5 V lens for testing. The Hasselblad XCD 55V is a 55mm f/2.5 lens for the X1D and X2D (X-mount) cameras. It is one of the V-series X-mount lenses. The line currently consists of 25mm, 38mm, 55mm, and 90mm lenses. All have f/2.5 as their widest aperture. All… [Read More]

LensRentals has loaned me a Hasselblad XCD 55mm f/2.5 V lens for testing. A few posts ago, I showed out of focus (OOF) point spread functions (PSFs) for the Hasselblad XCD 55V at 1/2000 second mechanical shutter speed and with electronic shutter (ES). A reader gently chided me for not combining all the images at… [Read More]