Quote:
Originally Posted by Peter Ward
The T-mount standard expects the focal plane to be at 55mm from the
front of the t-mount. Hence an EOSr T-mount would need to be quite thick to comply...but for a normal DSLR the native spacing is quote close.
You'll be off by 1.2mm ......I wouldn't lose sleep over it  |
Thanks Peter, I’ll have to check the depth of the Takahashi wide T-Mount for Canon because it is indeed quite thick compared my older non-wide T-mount (which is barely thicker than plate metal and needs a special tool to extract it as there’s nothing to grip on to!). Perhaps I’ll manage to find the dimensions of the Tak wide T-Mount online.
*Update. Takahashi America seems to suggest the wide T-Mount is 15mm and the canon adapter is 24mm for a total therefore of 39mm so I remain at least 17mm shy of the required distance between flattener and sensor. Or, have I misunderstood something?
*update 2: I forgot to add the 20mm mount to sensor didn’t I? So now the distance will be 59mm so I will actually be 2.8mm over. Is that kind of tolerance acceptable?