Originally Posted by
Leonard Evens
I think Emanuel's response must be correct, but as written, it may be subject to misinterpretation.
The issue is not just DOF; it is exposure time. ....
..... If you have to stop down further by some number of stops, then you must also increase your exposure time to compensate. That means that for exactly the same picture, with the same size final print and same angle of view, you will be using significantly slower times with 4 x 5 than you will with 35 mm. If subject movement is a consideration, then pictures you might easily take with 35 mm may be very difficult with 4 x 5 to capture. This can be a factor even for a static landscape if wind rustles the foliage.