FoCal Pro from Reikan is purpose designed to provide a comprehensive and accurate way to focus calibrate and test most modern Canon and Nikon DSLR cameras and.I have Reikan Focal that I just updated to test release 2.0.4 but I have to admit I've not yet used it. This allows you to set a focus calibration value for both the wide and telephoto ends of the focal range, and the. With the release of the EOS 5D Mark III back in 2012, Canon enabled Wide and Telephoto Calibration for zoom lenses. We’re really excited to announce the first public alpha release of the next version of our automatic camera/lens focus calibration and analysis package FoCal 2020 FoCal 2020 is the start of a new naming convention for FoCal releases.NatureScapes.net Forums :: View topic - AF micro adjust - Sigma 150-600 etc NatureScapes.net ForumsFoCal Test Chart Version 5 Author: Reikan Technology Ltd Subject: Test Chart for FoCal, Version 5 Keywords: Reikan, Reikan Technology Ltd, FoCal, Lens Calibration, AF Microadjustment, AF Fine Tune Created Date: 4:48:13 PMA single calibration will produce a focus adjustment result that is useful for a single focal length of a lens. Brand New Release: FoCal 2020 (Alpha 1) Posted on July 23, 2020.
Reikan Focal Focal 2.0 Pro Lens Calibration Software A 100
I had the target brightly lit and I tried several different light sources in every combination but it just wouldn't work. That's the chicken and egg thing.Yes but the lens portion should stay pretty constant so once you ahve acceptable values written into the lens, a second body should be able to adjust to it via it's AFFT table.I attempted to run Focal 2 numerous times but it just kept failing to work for me. In your report you indicated that you couldn't get the Sigma cal as good as you wanted until you changed the camera value for it. Use the Reikan on the other lenses, on the Sigma I would recommend a more manual AF Fine tune method.If you read my review, I go through how I calibrated the Sigma and some of the problems in getting it calibrated.Yeah, I went back over your report and perhaps I misunderstood but I got the sense you used the values from Reikan to get you a starting point for the Sigma calibration.If I plan to use the Sigma on more than one camera body it would seem to me you'd need to tweak the camera(s) to the lens. If you are going to do those with Reikan it means that you will likely have to run through the Reikan software a 100 times or more as you play high low at each of those 16 calibration points. If that's so what focal length would be best? Someplace in the middle of the range, say 400mm? Or if 600mm is the FL most likely to be used would that be the best FL to calibrate?How are you going to incorporate the Sigma dock and the Reikan software? The Reikan software simply tells you a value to put in the camera table but then you still have to go through with the dock and do the calibration at all of the shooting distances and focal lengths.
The setting changes need to be done when the lens is connected to the dock, but that can't be done when the lens is connected to the camera - obviously. I do hope to figure out the issue with Focal but I have what I think are better numbers than before.Now with the Sigma 150-600 Sport and the dock there are 16 points of adjustment but I'm still at a loss to figure out the best approach for performing this. I did that with 7 lenses and both bodies. Actually, I interpolated between the two largest file sizes. I then compared the file size of the compressed images and found where the largest file sizes were and selected that as the AF value. So, instead, I took a series of images at the following AF settings: -20, -15, -10, -5, 0, 5, 10, 15, 20.
I looked but did not find.It's basically a game of high low and can be extremely time confusing.Not sure if +1 in camera is equal to +1 through the dock (sorry if EJ has already confirmed this).It would imply that +1 on a Canon body is equal to +1 on a Nikon body, and historically that would surprise me a bit o) (or would sigma have implemented different compensation units depending on the lens mount ?)If compensation units are different between dock and body, then I would think that:1 - you cannot use in-camera figures to update the lens table, thus have to use dock only and mount and unmount between every setting change.2 - you cannot add offsets as easily as Brian suggested.The process for calibrating this lens is as follows:1. Finally, decide what focal length and distance is most valuable and retest at that point and set the camera value to the measured value.Well, that's the best I can come up with and I wish Sigma had a formal procedure to do this. Then, add the new offsets to the lens table. With the lens table updated the second round of tests should have enough adjustment range to permit the camera to find best values for all 16 points. Then, input those values into the lens via the dock.If as EJ discovered, one or more of the points is beyond the max +/- 20 you will then repeat the 16 tests with the lens values updated from the first test. Then complete the remaining values logging each AF value at each point.
I mean, it can not be the case that you make a guess, attach lens to dock, test again on camera, then repeat a dozen times for each of the 16 points - that would be insane and would involve perhaps hundreds of lens removals from camera and dock.As I said I looked around for an actual procedure from Sigma but could not find one. The other 15 points will be very close if not exactly on target.But, if there's no correlation between the camera AF values and the lens dock values I have to ask where the numbers come from that are put into the dock. For a second body, find an in camera setting that gets the longest focal length at infinity on target. If it is not, then you have to dial an offset into the camera to compensate in the opposite direction of the direction that the lens could not be calibrated in and redo the 16 points.2. As long as every point is within the calibratable range, then you are good to go.
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