Another thing to consider is film cost. I find that I can afford to take my Yashica Mat out alot more often then my 4X5. When I do take my 4X5 out it is for a maximum of 8 pictures. If I were to have an 11X14 or 12X20 I might be able to take 1 picture a month. If you can afford to use the camera enough to make yourself happy then go for it - but it is something to consider.
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