Appreciate your thoughts! Glad to know you feel I have good bandwidth with my current lenses. I am just eager to get the best out of my Fall foliage trip and also get ready for a trip to South Africa next year. Guess I do need a super zoom lens. Mike

Welcome to the forum. The Sigma lens is fairly new on the scene, the Fujifilm lens has been available for a while. Here are a couple of reviews that may help you decide: https://petapixel.com/2025/03/13/sigma-16-300mm-f-3-5-6-7-dc-os-review-a-long-awaited-return/ https://www.dpreview.com/reviews/field-review-fujifilm-xf-70-300-f4-5-6-r-lm-ois-wr The Chris Niccolls mentioned in the reviews is the same person. Please read these closely, especially if you are essentially wanting to get the lens, learn its basic familiarity and then take it on your trips. It can be really frustrating to find out during the journey that some of the negatives are vastly out weighing the positives. Are you wanting to try saving some weight by taking just one lens, a super zoom lens? If not, you already have the wide end covered with your present line up.

Hi friends I am a newbie to photography and to Fujiworld. I travel a lot for fun and enjoy wildlife and nature. After several years of taking photos with iphones, I bought a Fuji XT5 a few months back. I currently own only these two lenses: Fuji 23 mm F2 R and a Sigma 18-50. For an upcoming fall foliage trip and also Austalia/SE Asia trip, I would love to get a good telephoto lens. I am looking at Sigma 16 -300 or a Fuji 70 to 300. What would be your choice? Is there any other versatile lensI could buy for my trips?  Appreciate your advice!! Mike

I have just read this. All the XT cameras I have owned stop down with a half press of the shutter regardless of whether AF-C or AF-S is selected. This includes my X-T5, which I have just tried with all three shutter types. I haven't experienced your problem. What happens when the button is fully depressed is another matter. I don't have enough knowledge of that. I don't own an X-T50, so I can't say if it is the same.

Turning off overheating protection also stopped camera from stopping during meetings.