Leather case for RX100 MK3 (WITH carryspeed polarizing magfilter ON)

I have a Mark VI and use this case which is tough, easy to use and reasonably priced:-

https://www.amazon.co.uk/dp/B07G7W88ZV/ref=pe_3187911_189395841_TE_dp_2

Googling the dimensions of the Mark III versus the Mark VI show that the 100 VI has a front-to-back dimension of 43mm and the Mk III has a front-to-back dimension of 41 mm. When it is in the case there is about 2 mm clearance between the front of my camera and the inside of the bag. In theory, this gives you a latitude of about 4 mm for the extra depth of your filter.

Of course, this case is a different design to the Sony LCJ-RFX case. It can be carried on a neck strap but I use it on my belt and find that I can remove the camera very quickly and easily when required. The case will accept the camera with the Sony grip attached. J

Well it looks convenient but £18 case from a country known to use dogs for leather (It’s cheaper than you even) is soemthing I couldn’t buy. Anyone know of a canvas one?

Can't help you with the answer.

What I ended up doing is: take the picture of the suggested leather bag to a bag-maker and have it custom made in a similar design.

(initially i had a cheap canvas bag that was just the right size...and when it tore i never found another in a suitable size (either too big or too small). The 2mm-too small one regularly pushed the filter out of place, i ended ruining the lamelles that cover the lens, had to replace that (65€), they removed the magnetic ring needed for the mag filter --> could not find the original replacement, ordered a different brand --> does a bad job of holding the magfilter. (almost lost it) . all of this because of the missing bag.

Wish you luck in looking for the bag. Maybe best to try in different shops, with your camera with you.