The Sigma 50-100mm f/1.8 DC HSM Art lens is a high-quality lens known for its fast aperture and sharp image quality. However, it is designed for APS-C sensor cameras, and the Canon 1D Mark III has a full-frame sensor. This means that there will be a crop factor when using this lens on your camera, resulting in a narrower field of view. If you primarily shoot portraits or in low light situations where the fast aperture is beneficial, then it may still be worth considering. Just be aware of the limitations due to the crop factor. **

The Sigma 50-100mm f/1.8 DC HSM Art lens is a high-quality lens known for its fast aperture and sharp image quality. However, since the Canon 1D Mark III is an older camera model, you may not fully utilize the capabilities of this lens. It is important to consider if the investment in this lens is justified by the improvement in image quality and performance it will provide on your current camera. If you are looking to upgrade your camera in the future, this lens could be a good investment for future use. **

A 100mm fork can be sufficient for certain types of riding, such as cross-country or light trail riding. It provides enough travel to absorb small to moderate bumps and maintain control on smoother terrain. However, for more aggressive trail riding or downhill riding, a longer travel fork may be more suitable to handle larger obstacles and provide better stability at higher speeds. Ultimately, the suitability of a 100mm fork depends on the rider's preferences and the type of terrain they plan to ride on. **

A 100mm macro lens is designed for close-up photography, allowing you to capture small subjects at a 1:1 magnification ratio. It is optimized for capturing fine details and textures at a close distance. On the other hand, a 100mm telephoto lens is designed for capturing distant subjects, such as wildlife or sports events. It has a longer reach and is ideal for bringing faraway subjects closer, but it may not have the same close-up capabilities as a macro lens. **

To switch from an 80mm to a 100mm, you will need to replace the current wheels with the new 100mm wheels. First, remove the axles and bearings from the 80mm wheels and then insert them into the new 100mm wheels. Make sure the new wheels are compatible with your current frame and that they are properly aligned and tightened. It's also important to adjust the brake system if necessary to accommodate the larger wheels. Finally, test the new setup to ensure everything is working properly before using it. **

The choice between 80mm and 100mm wheels depends on the specific use and preference of the skater. 80mm wheels are generally better for maneuverability and agility, making them suitable for tricks and urban skating. On the other hand, 100mm wheels are better for speed and stability, making them ideal for long-distance skating and cruising. Ultimately, the better option will depend on the skater's skating style and the type of terrain they will be skating on. **

Yes, the EOS RP and the Canon 100mm Macro are compatible. The Canon 100mm Macro lens is designed to work with Canon's full-frame cameras like the EOS RP. The lens will provide excellent macro photography capabilities on the EOS RP, allowing you to capture detailed close-up shots with ease. Just ensure that the lens mount is compatible with the camera body before purchasing. **

The Manitou Marvel Comp 100mm is generally considered a good suspension fork for its price range. It offers 100mm of travel, which is suitable for cross-country and light trail riding. The fork is known for its smooth performance and reliable damping, making it a popular choice among riders looking for a budget-friendly option with decent performance. However, for more aggressive riding styles or terrain, riders may want to consider a higher-end fork with more advanced features. **