Review on 📷 Altura Photo 8mm f/3.0 Professional Wide Angle Aspherical Fisheye Lens for Canon EOS 90D 80D 77D Rebel T8i T7 T7i T6i T6s T6 T100 SL2 SL3 DSLR Cameras with Canon EF Lens Mount by Emily Brown

Bought this lens to use with a first generation Canon 7D. It's all done by hand, so I set my camera dial to M and set the ISO where needed for the lighting. I then played around with aperture and shutter speed to get the exposure and depth of field I wanted. I find it useful to set the metering to "Spot" mode to get the exposure for the most important part of the image, and then increase or decrease the aperture or shutter speed slightly to make sure other interesting parts of the image are captured are usable. I always underexpose a bit when in doubt as it's easy to fix in post, but the overexposure never recovers. optimal exposure when something off-center is exposed with other metering methods. Experiment with it and find out which metering method works best for your recordings. For what I do, spot metering works best for most shots. I bought this lens primarily for night sky photography so the day I received it I went to test it at night. The included images were captured in RAW format and processed in Photoshop. Because the field of view is so wide, it's difficult to focus through the viewfinder. Everything is so small that unless your subject is a few feet from the lens, focusing through the viewfinder isn't very practical for general wide-angle shots. I won't be shooting close-ups with this lens, so the combination of focus assist and real-time mode works well for me. If you set the camera in real-time so you can see the image on screen instead of in the viewfinder, and then use the focus-assist button to magnify the screen by 10x, it's relatively easy to focus. Not fast but easy to do. For the price this is a great lens and will do what I want.