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View Full Version : APS-C lenses on C100? Jim Snow June 19th, 2013, 01:20 PM Has anyone used APS-C lenses on the C100? I assume they will work fine but the C100 sensor is slightly larger than APS-C so there may be a problem on some lenses. I am particularly interested in the new Sigma 18-35mm f1.8 lens. Sigma 18-35mm f/1.8 DC HSM Lens for Canon 210-101 B&H Photo Justin Molush June 19th, 2013, 01:54 PM The 17-55 2.8 IS works on the C100/C300 no problems so I would assume the 18-35mm should work. Should. Speaking of which I am about to call B&H and pre-order this lens for my 7D right away. It was noted that using peripheral illumination correction would help eliminate a little bit of the mild light falloff that does occur around the edges with crop lenses. This will probably be the next go-to for normal/wide shots on S35 cameras like the fs700 as well. Christian Schmitt June 19th, 2013, 05:07 PM The C100's EF-S mode should work for non Canon APS-C lenses too, I guess. Maybe someone with the Tokina can test...? Docea Marius June 20th, 2013, 02:11 AM Hallo Tokina 11-16 II and is perfectly on C100 Christian Schmitt June 20th, 2013, 03:26 AM Hallo Tokina 11-16 II and is perfectly on C100 That should answer the OPs question then... Bill Scherer June 20th, 2013, 03:53 PM Hallo Tokina 11-16 II and is perfectly on C100 Need clarification- Then the above lens is a 11-16 mm on the C100 and not a 16-24 mm lens? When does one interpolate lens size? Only if it's a Canon EF lens? Jim Snow June 20th, 2013, 04:09 PM It's 16 to 24 with crop factor on the C100. The crop factor isn't factored in on APS-C lenses. Matt Davis June 21st, 2013, 09:28 AM There is a special APS-C mode in the C100 - if you get any vignetting with a certain lens, you dive into the Special Functions section of the wrench menu, and the camera crops in a little to match the APS-C mode. You can assign this toggle on/off to your 'my menu' star setting IIRC. I've not needed to use it on my Canon 17-55 or Tokina 11-16. My rough and ready tests (not charts) don't show client-visible degradation. Jerry Mennenga July 27th, 2013, 08:46 AM When you are using third party lenses on the c100, does the f-stop show in info area if you have that on? I have a Sigma 120-300 f/2.8, not a APS-C lens, but full frame, and the f-stop does not show in the info window and I had to use the ISO setting, shutter and ND filters to correct for exposure. Am I missing something? Thank you. Jerry Mennenga Sioux City, Iowa |