This guide explains what the Metz SCA system is, the difference between its main versions, how to select and install SCA adapters, how to use TTL and manual flash control, high-speed sync, off-camera options, and common troubleshooting tips.

1. What the SCA system does

Metz designed the System Connector Adapter (SCA) to make their flashes adaptable across many camera brands. Instead of buying a different flash for each brand, you pair a Metz flash with an SCA adapter that “translates” the electrical contacts and control signals. That way, a single Metz unit can work with Nikon, Canon, Minolta, Leica, and many more — while still providing TTL or other camera-specific functions.

2. Main SCA families

• SCA 300 – the original series, developed during the film SLR era. These adapters allow TTL and basic communication but don’t support newer digital protocols.
• SCA 3000 – the updated family for the digital age. These modules handle modern TTL systems (E-TTL, i-TTL, etc.) and sometimes add features like high-speed sync. Versions are marked M3, M5, M6, etc., with higher numbers usually indicating newer firmware.
• Other SCA branches – Metz also released other system connectors (e.g., SCA-500) for special applications, but the bulk of modern use involves the 3000 series.
  

3. Choosing the right adapter

1. Check your flash model (e.g., 54 MZ-4i, 58 AF-1).
2. Look up Metz’s compatibility charts — these list which adapter matches which camera brand and model, plus what features will work.
3. Pay attention to version codes — if your camera is recent, you may need an adapter with updated firmware (e.g., SCA 3102 M6 instead of M3).
   

4.  Attaching the system

• Switch off both flash and camera before connecting.
• Slide the adapter into the flash’s detachable base until it clicks.
• Mount the assembled unit on the camera hot shoe and lock it in place.
• Power up the camera first, then the flash. On most cameras, the flash-ready indicator should appear in the viewfinder or LCD if the setup is correct.

5. TTL flash operation

With the proper adapter, your camera can control flash exposure through its native TTL system. Flash exposure compensation (FEC) is often set on the camera, though some Metz units allow adjustment on the flash itself. If exposures are slightly off, dial in a correction using the camera’s controls.

6. Manual control

Even with no adapter at all, Metz flashes can be used in manual mode. Here you choose the power output (full, 1/2, 1/4, down to 1/128) and set the zoom head as needed. Manual is the most predictable approach when working with studio lights or third-party triggers.

7. High-speed sync and sync limits

• If your flash + adapter + camera all support high-speed sync, you can shoot above the camera’s normal sync speed (e.g., 1/500s).
• If not, you’ll be limited to the standard X-sync speed (usually between 1/60s and 1/250s). Check the compatibility chart to confirm.
  

8. Off-camera options

• Wired: Metz made SCA extension cords so you can keep TTL communication even with the flash off-camera. One type has a plug at one end to fit Metz hammerhead flash units, the other (SCA 307A) has a male module connector on one end and a female module connector on the other and is used for all hot shoe Metz flash off camera.
• Optical/radio: Many Metz flashes have an optical slave mode. For radio triggers, most photographers use them in manual mode unless the trigger system specifically supports Metz TTL (rare).
  

9. Troubleshooting checklist

• Make sure you’re using the correct adapter family and version.
• Always power down before connecting or removing modules.
• Test the flash in manual mode at your camera’s sync speed to confirm the basic connection works.
• Clean the contacts with a cotton bud and alcohol if the flash misfires.
• Be cautious with older Metz flashes: some output higher trigger voltages that may damage modern cameras unless the SCA adapter regulates it.
  

10. Care and storage

Avoid stress on the camera hot shoe if you’re using a heavy Metz flash use a bracket or cable.

Keep adapters in labeled pouches so you don’t mix them up.

Don’t store the flash with batteries installed for long periods – leaking batteries will ruin the contacts inside your flashgun..

See a full range of Metz flashguns and accessories here

Filters are an essential part of photography and cinematography, helping control the look, tone, and accuracy of captured images. Among the many available, the 81A series filter stands out as one of the most useful warming filters for both film and digital shooters.

What Is the 81A Filter?

The 81A filter belongs to a family of warming filters designed to subtly shift the color balance of an image. Specifically, the 81A introduces a mild amber cast that counteracts overly cool or blue tones.

• Filter factor: Typically around 1.2× (requiring about 1/3 stop exposure compensation).
  
• Color temperature adjustment: Raises the effective color temperature by approximately 200 Kelvin. For example, it can correct daylight film (balanced for 5500K) when shooting in shade (around 6000–6500K).
  
• Material: Usually made of optical glass or high-quality resin, coated to reduce reflections and flare.
  

In short, it gently warms up the scene without making colors appear unnatural.

Why Use the 81A Filter?

1. Correcting Cool Light
   Outdoor photography often results in cooler images, especially under open shade, overcast skies, or at high altitudes. The 81A reduces this bluish tint for a more natural, balanced look.
   
2. Enhancing Skin Tones
   Human skin can look washed out or pale in cool lighting. The subtle warming effect of the 81A filter adds life and warmth to skin tones, making portraits appear healthier and more flattering.
   
3. Improving Landscapes
   In scenic photography, the filter can make foliage appear richer and skies less stark. It gives a sense of warmth that makes landscapes feel more inviting.
   
4. Film and Digital Versatility
   While originally designed for film, the 81A remains relevant for digital shooters who want to achieve an in-camera look rather than relying on post-processing.
   

How to Use the 81A Filter

1. Choose the Right Size
   The filter comes in different diameters (e.g., 52mm, 58mm, 77mm) to fit your lens. Make sure you match the filter thread size, or use a step-up ring if needed.
   
2. Mounting the Filter
   Simply screw the filter onto the front of your lens. Because the 81A is subtle, it can be left on the lens as a protective cover without drastically altering your images.
   
3. Exposure Compensation
   Since the filter factor is low (about +0.3 stops), most modern cameras automatically adjust exposure. For manual film cameras, you may need to open up the aperture slightly or slow down the shutter speed.
   
4. Combining Filters
   The 81A can be used alongside polarizers, neutral density filters, or other creative filters. Just be mindful of stacking too many, as this can introduce vignetting or reduce image sharpness.
   
5. Practical Scenarios
   
   • Portraits outdoors: Adds a healthy glow to skin tones.
     
   • Mountain or seaside photography: Corrects excessive blue tones.
     
   • Travel photography: Provides a consistent warmth across varied lighting conditions.
     

81A vs. Other Warming Filters

• 81B and 81C: Slightly stronger warming effects than the 81A, useful in colder light or when a more pronounced warmth is desired.
  
• Skylight (1A) filter: Similar in concept but less warming than the 81A, often used just for lens protection.
  

Conclusion

The 81A series filter may seem subtle, but its effect is powerful in the right situations. By gently warming tones, it improves color balance, enhances skin, and gives outdoor shots a natural vibrancy. Whether you’re a film purist or a digital photographer looking for an in-camera aesthetic, the 81A remains a classic, reliable tool in the filter kit.

Warming Filters for sale

81a Filter

81b Filters

81c Filters

81D Filters

81EF Filters