Is there time for an interchangeable sensor DSLR?

Started Oct 19, 2012 | Discussions thread
OP Theodoros Fotometria Senior Member • Posts: 2,090
Re: Is there time for an interchangeable sensor DSLR?

Leif Goodwin wrote:

This is reminiscent of Thom Hogan's modular camera obsession. As pointed out above, the machining needs to be precise to allow the sensor to be accurately positioned. And that would greatly increase the cost of the camera, as you have to build a rugged precisely made frame into which you slot the sensor. The sensor also has to be in a frame, to provide strength, and to allow it to mate accurately with the slot. Both are expensive to make, and increase the size of the camera. In addition, the sensor is intimately tied to the image processing chip. So, as well as the sensor frame, and the sensor slot, you have to design a sensor interface, which allows the signals to go from the sensor to the image processor. That further increases cost. You will always be tied to the same image processor too, so if you want to use a sensor with twice the pixel count, you will be limited to the throughput dictated by the current processor. And you will have to upgrade the firmware. Alternatively, you only have one piece of firmware, and then that constrains what you can do. If you want several sets of firmware installed at once, for several sensors, you need more intenal memory, further increasing cost.

In my opinion this just does not fly. It is too niche, and not suitable for a mainstream product.

The mechanical issues are not so difficult to resolve Leif... not with current tech anyway, there is a limitation with the electronics that the camera bares as far as future speed and processing speed is concerned, but I am sure the D800 (for example) buffer, memory and processing would be up to its limits with only the current sensor that the camera bares and that could satisfy many users for many years to come.... (after all it's been proved that modern cameras can serve for at least four years). It's the flexibility and available solutions that would balance the drawbacks... Possibly in the future, somebody could buy a replacement (upgraded) body and keep many of his sensors, while at the same time keep his old body as a back up and use it with speed/processing limitations with future sensors... That's great


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