Wedge bases are designed to be easy to use and provide a secure connection. They can be found in a variety of sizes and configurations, depending on the specific application. There is a German national regulation for vehicle bulbs, now superseded by international ECE regulations. Bulbs according to the old German regulation are still manufactured. The German regulation is contained in §22a, Subsection 1, No. 18 of the Straßenverkehrs-Zulassungs-Ordnung (StVZO, Road Traffic Approval Regulation). Per the Fahrzeugteileverordnung (FzTV, Vehicle Parts Regulation), such light bulbs must bear an approval mark consisting of a sine wave and the letter 'K'. The technical requirements themselves are established by standards produced by DIN. Browsing the online shop you’ll need to look in the product’s description or specification for the code used to describe the cap of the bulb. For screw in fittings it will start with a letter ‘E’ which stands for Edison Screw. The second part will be a number which corresponds to the diameter of the lamp holder the bulb’s screw goes into, so an E10 screw fits in a 10mm diameter holder, an E14 screw fits into a 14mm diameter holder and so on… The three most often used bases in the United States of America for traditional lighting are the E12 (candelabra), the E26 (medium), and the E39 (mogul). Light Bulb Base Sizes Chart

As always, these crops mean you’ll need very wide lenses if you’re a handheld vlogger, which in turn means the 28-60 kit zoom just isn’t going to cut the mustard. Next-up, the new Auto Framing mode which once it recognises a face will digitally zoom-in a little, leaving space around the edges to move the frame left and right to follow you – simulating a camera operator panning a little from side to side. You can adjust the speed, the delays, and the crop size, as well as recording the cropped version to the SD card and output an uncropped version over HDMI or vice versa if desired. Enter the latest ZV-E1, which essentially takes the 12 Megapixel sensor with IBIS from the A7S Mark III, and, following earlier models, drops the viewfinder, and adds the improved microphone plus some new AI-based vlog-friendly filming modes. E39 is known as the large base or mogul base. Its typically what is used on older metal halides and high pressure sodium from 100 watts and up. The E is for Edison screw base and the 39 is 39 mm across. Larger than the standard E26 or 26 mm across. Any bulb ranges offering E1 type bulbs has approval due to it complying with the German KBA regulations.Next for Active SteadyShot which again applies a crop to allow the sensor shift system to operate over a broader range. On the left side of the body are three flaps. Behind the top one are a 3.5mm microphone input and a USB C port, the latter supporting charging, power delivery and UVC / UAC output for use as a standard USB webcam, and in a nice upgrade, it’ll even now stream over USB in 4k up to 30p. And finally the new Dynamic mode which applies additional digital compensation for potentially steadier footage, albeit with an even tighter crop. Now I’ve super-imposed a red frame, where the outer edge represents the coverage when you’re using Active SteadyShot, which works out about a 1.12x crop.

The name “Exx” is made up of the letters “E” for “Edison” and “xx” for the millimeter diameter measured across the peaks of the thread on the base (male). This article discusses the different types of light bulb bases. It broadly covers what the different light or lamp bases mean, why different lamp bases are used for different lighting applications, and where those light bulb bases are used. Additionally, it provides a light bulb base sizes chart in shareable image format. Light Bulb Base Sizes Next I’ve enabled Active SteadyShot which incurs a crop but delivers less wobbles. I always thought Active SteadyShot applied additional digital compensation, but Sony tells me on the full-frame cameras, it’s actually still only using sensor shift, but in a broader range which necessitates a crop. UN Regulation 99 covers gas discharge light sources for use in vehicle headlamps. All light sources acceptable under Regulation 99 are also acceptable under US regulations.However, light bulb bases are not standardized. This is to prevent dangerous light bulbs from being used in light fixtures that aren’t designed for them.

In addition to automotive lighting, wedge bases are also used in other applications such as outdoor lighting, commercial lighting, and theatrical lighting. They are a popular choice because of their simplicity, reliability, and versatility. COMPACT FLUORESCENT PLUG IN BASES Sony then added a new version of the ZV-1 called the 1F which swapped the zoom for a fixed 20mm equivalent prime, making it more suitable for handheld vlogging, but most of us could guess a full-frame ZV wouldn’t be far behind. Ok, now for the sensor which as you already know is inherited from the A7S III. This has 12 Megapixels which in turn allows the ZV-E1 to record 4k video without additional cropping, binning or oversampling. It simply slices-off the top and bottom into the 16:9 shape and starts recording. Next here they are with Active SteadyShot, making the 28 on the right uncomfortably close, and finally here’s both with Dynamic SteadyShot, delivering the least wobbly footage, but with the greatest crop. E26 is the size of most light bulbs used in the U.S. It’s referred to as having a “medium” or “standard” base.Ok let’s get on with the review, starting with the design and controls. Here’s the ZV-E1 on the left, alongside the A7 IV on the right, the latter also representing other models in the full-frame Alpha range in terms of size. However you choose to describe it, the ZV-E1 is unashamedly aimed at videographers. Sure it can still take photos, but this is not designed as a hybrid camera. If photos and video are equally important to you, you’ll be better-served by the similarly-priced A7 IV.