Category Archives: Technical

Understanding F-Numbers and Light Transmission

Introduction

When comparing camera lenses, one of the most commonly discussed features is how “fast” a lens is—usually expressed in terms of f-numbers. But what do those numbers actually mean, and how precise are the differences we talk about, like “half a stop” or “two-thirds of a stop”?
In this article, we’ll unpack how f-numbers relate to light transmission, explore why the system isn’t always as exact as it seems, and show you how to calculate these differences for yourself—or simply reference our handy table at the end. Continue reading Understanding F-Numbers and Light Transmission

The best fullframe mirrorless camera for adapting manual focus lenses

Introduction

etz e to z e2z adapter neewer megadap techart comparison haoge nikon sony e-mount z-mount
Laowa 35mm 0.95 via Neewer ETZ on Nikon Zf

With the release of Sony’s first A7 series camera we saw a renaissance of many legacy lenses from “dead” mounts like Canon FD, Olympus OM, Minolta SR and several more. Because of flange focal distance issues these lenses often couldn’t be attached to modern DSLRs. And even if it was possible, it was a pain to use them on DSLRs, thanks to their matte screens being unsuitable for manual focus lenses.

Let’s have a look at the history of focusing aids in fullframe mirrorless cameras and who does it best.

Continue reading The best fullframe mirrorless camera for adapting manual focus lenses

Different Filter Stacks and what they mean for us: Sony E | Nikon Z | Leica M | Kolari UT

Introduction

filter stack comparison sony e nikon z fe leica m kolari UT

When Sony released the first affordable fullframe camera with the A7 in 2013 almost none of the enthusiast photographers were aware of issues related to filter stack differences. Filter stack describes what is in front of the sensor and different manufacturers decided to go for different thicknesses here that can influence how our lenses perform. If you stay within just one system this is usually not something to care about, but when adapting lenses it is very helpful to be aware of this topic.

In this article I try to tell you about these differences and for what lenses they matter, so you can find out if it is something that might affect you.

Continue reading Different Filter Stacks and what they mean for us: Sony E | Nikon Z | Leica M | Kolari UT

Using Speedboosters on Fullframe Cameras

Introduction

Zhong Yi LensTurboII and Nikon AF 85mm 1.4D via Pixco Speedbooster on Sony A7rII

Speedboosters are still somewhat popular among videographers, but since these days used fullframe cameras are very affordable, this is not really the case for still photographers anymore. They can be used for some creative shallow depth of field photography on fullframe cameras though, and that is what we will have a look at here.

Sample Pictures

Sony A7r | Zhong Yi LensTurbo II | Canon nFD 85mm 1.2L | ©Simeon Kolev

Continue reading Using Speedboosters on Fullframe Cameras