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I've cleaned dust specks off of the sensor of my T7 a couple of times with a lens cleaning brush with good result. I would characterize those cleanings as removing a few specs of dust that were visible to the naked eye and visible on the RAW files under the right circumstances like in clear blue skies, etc. The last time there was also a speck of dust on the underside of the focusing screen and I took care of that with the brush as well. However, I've read post that said a "rocket blower" is the best tool for dust removal and not to use a lens brush. I went to Amazon and searched rocket blowers appear to be basically a bulb type blower with a soft plastic or silicone tip that have been around for years. There were different sizes and shapes of them including one that indeed looked like a rocket (albeit Flash Gordon's rocket) but I didn't order one and came here for recommendations first. I know that there are also sensor cleaning swaps for full frame and APS-C cameras like these (https://www.amazon.com/AAWipes-Sensor-Cleaning-Full-Frame-Sensors/dp/B082PS6Z91/ref=pd_bxgy_img_d_sccl_1/131-5125795-0130419?pd_rd_w=4rMJD&content-id=amzn1.sym.2b132e63-5dcd-4ba1-be9f-9e044543d59f&pf_rd_p=2b132e63-5dcd-4ba1-be9f-9e044543d59f&pf_rd_r=9Z8N0AV59ZJ2Z77BFAVG&pd_rd_wg=cf5T7&pd_rd_r=0b7a5e2c-ce58-4bbd-8182-9cee82ed83ae&pd_rd_i=B082PS6Z91&psc=1). The type of cleaning I did with the brush was very minor and entailed removal of superficial dust specks and not really a cleaning of the entire sensor, so I'm not sure that even if I had a sensor cleaning swaba I would have one. I'm curious as to what those of you that clean your own sensors use and recommend? Your input and recommendations are greatly appreciated. Thank you!

John, I know what you are talking about and pretty much "ignore the noise" and do what works for me until I'm stumped or get curious - then I read the manual. I've found that the Canon Speedlites seem to work very well with compatible cameras and at the end of the day, are "smarter" than I am in figuring out how to get very good or excellent results. So I trust and maybe "tweak" E-TTL modes and adjust accordingly if needed.

I found this https://community.usa.canon.com/t5/Speedlite-Flashes/Can-I-use-my-Canon-Speedlight-199A-with-my-Canon-T2i/td-p/62273 that Mike wrote 10 years ago. From what I gather, you probably have to set the camera to M and set the ISO, shutter speed and f/stop based on dial or readout on the back of the flash - just like Mike suggests.

Sedona, AZ - some of the "Red Rocks" Canon T7, kit lens

Common House Sparrow. Rebel T7, EF-S 55-250 IS II, @ 250mm, /400th sec, f8

Canon EF-S 55-250 @250mm, f8, 1/400th sec

Olympus C-5000Z 2-9-2009

iPhone 11 Pro Max

Although I don't use adapters, etc., the solution dawned on me as I recall reading that solution "somewhere". However I was reluctant to offer that solution because it was based on my recollection of "something that I had read somewhere." I'm glad you found the solution and look forward to what you post. BTW - again without context, I thought I read "somewhere" that you lose infinity focus using an adapter. Perhaps you'll let us know if this is the case with your setup.

Wooden giraffe with Santa hat. Rebel T7, EF 85mm f1.8USM @ f1.8 w/fill flash

While walking my dog yesterday, I came across something interesting. I saw a couple that I'm guessing were born this century taking a walk and enjoying the day. The young lady had what appeared to be a Canon AE-1 with breech lock FD 50mm f1.8 lens around her neck. Curiousity got the best of me and I asked if her camera was a Canon AE-1 and if she was shooting black and white or color film? She confirmed that it was an AE-1 and was shooting color negative film but enjoyed shooting black and white as well. I told her that I had an AE-1 at one time (bought it shortly after the camera was introduced) and took thousands of photos with it over the years. She said that she bought her camera at a thrift store and from what I saw, the camera and lens looked like they were in excellent condition. I resisted the temptation to ask more questions, bore them with my AE-1 stories, etc. I thanked them for stopping and talking to me and told them to have fun! As we went separate ways, I saw them stop to and take photos of each other taking photos of each other - he of her with his iPhone and she of him with her AE-1. I lthough it was interesting juxtaposition. It made me smile to run into someone enjoying the same camera that I enjoyed using for so many years and brought back many fond memories.

Backyard Birds - Anna's Hummingbird (female) Rebel T7, EF-S 55-250 IS II, w/430EX fill flash

Coronado Bay Bridge