Lavrentiy, Here's a link to an adapter that also should work with a canon EOS mount lens: http://www.amazon.com/EzFoto-C-Mount-Adapter-Camera-cameras/dp/B0063X8RN0/ref=sr_1_5?s=electronics&ie=UTF8&qid=1349824442&sr=1-5&keywords=canon+mount+c+mount
Best regards, Oleg On 4 October 2012 11:56, Oleg <[email protected]> wrote: > > How can I use Canon lenses (EOS) with Elphel 353? >> >> ** >> >> I only found EOS to C-Mount 16mm adapters on ebay and amazon, but as I >> see, Elphel 353 has 25mm connector.**** >> >> http://www.amazon.com/Kipon-Canon-Mount-Lens-Adapter/dp/B004THUG6Icurrently >> unavailable, actually for a long time. >> **** >> >> ** >> > > The C-mount is a standard. The adapter you found will work. > > However, because of the crop <http://en.wikipedia.org/wiki/Crop_factor> you > will get a smaller field of view and the canon lens will arguably provide a > better quality than a 1/2.5" format equivalent (same FOV but for 1/2.5"). > > Here's what we usually reply about selecting lenses: > > We use the Micron 5 Mpix Sensor in Elphel cameras, format 1/2.5" (7mm >> diagonal) so the lens has to be 1/2" format. > > The standard lens we recommend with Elphel cameras is 3Mpix Varifocal lens >> H3Z4518CS-MPIR. >> However you are welcome to choose lens, for example from: >> http://www.rmaelectronics.com/lenses.htm >> just keep in mind 1/2" or 1/2.5" format of the lens, that is compatible >> with the 5Mpix Aptina sensor in Elphel cameras. >> Lens manufacturers specify (when they do) "megapixel" resolution for the >> full lens format. Let's consider the 2/3" format lens that claims to be "5 >> MPix" (HF12.5SA-1 http://www.rmassa.com/manu/fujinon.htm ). 2/3" format >> corresponds to the image size diameter 11mm. >> The sensor we use has diagonal of 7.1mm, so let's see how many pixels out >> of 5MPix will get to the sensor: >> 5Mpix*(7.1mm/11mm)^2 ~=2.1Mpix >> So we need to have "10 MPix" 2/3" sensor (there are some new ones, about >> $700) to nearly match the sensor (will still be some 4.2MPix, not 5). >> With 1" (16mm diagonal) things will be even worse. > > > Best regards, > Oleg Dzhimiev > Electronics Engineer > phone: +1 801 783 5555 x124 > Elphel, Inc. >
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