Hello photographers,

today I would like to share with you a Hot Spot test with Leica Q.
Hot Spots appear when shooting in infrared light and most of the times it is dependent on lens internal coating and manufacturing quality.
Unfortunately, Leica Q, first model, presents this defect when shooting in infrared light.
Following, some pictures taken from f1.7 to f16 to showcase the hot spot.
The filter used is a 850nm IR from Kolari Vision.
The second row of pictures is a bit different as I applied a LCC to correct some cast.
I also use a Leica CL and Leica T for IR photo. From my experience with T lenses, non of them have a noticeable/disturbing hot pot in the middle of the frame while shooting IR.
Let me know your experience in the comments!

After the pictures, for the curious, I liked an article from Kolari Vision that explains this phenomena and also has an index of lenses with this issue.
Below some galleries:

Finally, in you want to know more about hot spots in IR photography, link to KV post:
The science of infrared hotspots by Kolari

Thanks for reading,
Tomas.