Soke Engineering / Knokke film scanner

[brbo]

Where does the idea that this scanner uses a 1:1 lens come from?

Georg clearly said that they are using a small sensor - much smaller than FF. This is also evident from product images. A 1:1 lens would necessarily mean that there would need to be some stitching if you want to scan 135 film. Product images certainly don't support that idea as lens and sensor board seem definitely fixed and I really can't imagine anyone designing a scanner like this that moves the film up and down to scan all the different parts of the frame.

What am I missing?!

 

[koraks]

Where does the idea that this scanner uses a 1:1 lens come from?

I agree that assumption doesn't add up; you're right.

 

[brbo]

Btw, lens in Minolta 5400 desktop scanner is a 8/4 design (magnification 1.8x), Nikon CS 5000 uses a 7/4 lens.

 

[albireo]

PS: I think it's also safe to assume that the choice has been for a CMOS image sensor with onboard ADC's since the electronics design and signal handling of doing that off-chip on a custom board would be akin to rocket science. No disrespect to the developers here, but that's a different league of EE.

Thanks @koraks - that helps a lot.

and thanks @gswdh and team. Never been interested in the whole DSLR scanning cottage industry but I'm incredibly interested in this project. It might be the replacement I need for when my Coolscan breaks.

Keep us posted!

 

[_T_]

Where does the idea that this scanner uses a 1:1 lens come from?

Georg clearly said that they are using a small sensor - much smaller than FF. This is also evident from product images. A 1:1 lens would necessarily mean that there would need to be some stitching if you want to scan 135 film. Product images certainly don't support that idea as lens and sensor board seem definitely fixed and I really can't imagine anyone designing a scanner like this that moves the film up and down to scan all the different parts of the frame.

What am I missing?!

I was not saying that the scanner uses a 1:1 lens. Only that near 1:1 a symmetrical lens automatically cancels much of the distortion you would otherwise have to correct for.

The actual magnification could be significantly less or significantly more and still show much of the cancellation provided by this type of design.

1:2 magnification or even 1:3 magnification are usually still within that range of being considered near 1:1 or near macro.

 

[photoyoda]

Hoping for the best on this one, but if its yet another consumer scanner that can't meet the standard of a 20+ year old consumer scanner (Coolscan 5000, or 4000/V even) outside of speed, it'd be a pretty big bummer.

Am I correct in understanding it at least has a narrowband RGB light source (though unfortunately not paired with a mono sensor)?