Around the turn of the 20th century, Karl Pearson, an English mathematician and statistician, invented the histogram as a way of presenting data. Originally, the histogram was a kind of bar chart, with the x-axis divided into intervals — now called buckets or bins — and a bar for each bin indicating how many items… [Read More]
My lack of productivity
Some of you may have been wondering what’s happened to my productivity. No new photo test results for three months. What’s going on? I had hoped to delay the story behind that until I had good news to report, but DPR’s impending demise means that this may be the end of my time in being… [Read More]
The report on the CXD 90V will be delayed
In the last post, I said that Hasselblad was shipping me a XCD 90V lens to review. When I wrote that post, we had not worked out when I’ll be able to publish the results. No we have, and Hasselblad wants me to hold the review until they give the word. So there will be… [Read More]
Using the Swebo TC-1 with more bellows extension
The Swebo TC-1 is a nice piece of kit, but the rail and bellows only accommodate about 190 mm of flange focal distance. I can focus the Digaron HR 180mm lens from infinity to a few meters, but I can’t use longer lenses even at infinity, and I can’t get the bellows draw necessary for… [Read More]
First real picture with the Swebo TC-1
720nm IR-modded GFX 50R on the back of a Swebo TC-1, Rodenstock 180mm f/5.6 HR Digaron on the front of the TC-1, a 950 nm filter on the front of the lens. Edge burned for aesthetic reasons; the lens covers the sensor perfectly, as far as I can tell.