- #REIKAN FOCAL VS LENSALIGN FULL#
- #REIKAN FOCAL VS LENSALIGN SOFTWARE#
- #REIKAN FOCAL VS LENSALIGN PLUS#
Ie my 200-500 is adjusted for the 500mm end and my 70-200Fl is the median as the difference between the two ends if 3 units. What I do is either test both ends and pick the median between the two adjustments if they are close or if they are far apart I adjust it for the focal length is use most. But then you are paying 10-20K for the zoom. the expensive cinema zooms have an adjustment to fix the lenses to be parfocal. The zoom lenses are problematic as still camera lenses are not parfocal. I don't worry because I can fine tune the focus and it is not out of range on any of my bodies. I have one lens that is very largely minus. All Melville will do is put some shims in (or take them out). If you get a lens that needs lots of minus and try to use it on a body with lots of minus then there could be a problem. However, so as not to wear the shutter out completely, I did a lot of UI and image analysis development with a simulated mode which used around 1000 captured images to simulate various situations.If you can get a sharp focus who cares what the number is. My guess is that I probably ran 20-30 tests a day when I was working with this. When I started, each attempt took 41 shots (for obvious reasons), then I started honing the prediction algorithm and fine tuning which points were taken to drop the numbers.
I just wanted to clarify the "thousand of shots" comment in the FAQ mentioned above. I'm guessing the forum rules are very strict about any kind of promotion, so I hope I'm not overstepping any mark by replying here. I'm Rich - the author of the FoCal software. Tested with 1000's of shots seems to be kind of light for testing a new product. I can do a lens in less than an hour, it doesn’t take that long. I think it is more accurate and faster to quickly review a thousand shots than it is to over analyze 40. What I have found is the cameras AF system is not at all as accurate and consistent as we would hope. How many times have we seen someone post three pictures and think there lens is front focusing? Honestly if I do a group of 40 pictures there maybe four or five in a row that front focus slightly then the rest go behind. I use Adobe Bridge and just look at the number count to see the averages.
#REIKAN FOCAL VS LENSALIGN FULL#
I go through them on full screen view, pick a number on the outside edges of the DOF front and back then scan them and mark them with stars, like one for front focus, two for on and three for back. I do a group and do a quick scan of the pictures, maybe less than a few seconds looking at each frame to determine where it hit. The reason for placing the Lens Align device at 25 or 50 times the focal length is that alignment errors made at the minimum focus distance will. You can either estimate the distance by walking it off or use a carpenter’s measuring tape. Honestly it isn't that bad, because how I evolved in to using it I don’t fuss over specific pictures. The minimum of 25 times the focal length in mm works out to 8.2 feet per 100mm, or roughly 65 1/2 feet. I was considering getting a Lens Align but if it takes thousands of shots to adjust a lens I wouldn't consider it.
#REIKAN FOCAL VS LENSALIGN SOFTWARE#
The software also has a target check that tells you when your setup is good enough and even shows a tip about improving lighting if it thinks the EV is too low. I setup the test by taping the target on a wall (printed on normal paper, no gloss) and set up my camera on a tripod as well as possible. So overall my first impressions are pretty positive. The values that the FoCal automatic adjustment came up with (for the new 7D body) are +9 for the Sigma 30mm and +6 for the EF 85mm and +2 for the EF-S 15-85mm. On the old 7D I determined that both the EF 85mm and the 30mm Sigma front focus using the DYI guide and tips by neuroanatomist, thank you for the excellent guide! The values I set for the old body were +10 for the Sigma and +8 for the 85mm. I have just changed my 7D body for a brand new one (got a good deal with 15-85 and sold the old body) but the adjustments seem to be pretty similar to the ones I made for my old body. It's quite fun to watch the automatic mode work it's magic. I have so far calibrated my EF-S 15-85mm (at the long end), Sigma 30mm f/1.4 and EF 85mm f/1.8 with the software. It's an interesting product and makes AFMA much easier and faster compared to doing all the work yourself.
#REIKAN FOCAL VS LENSALIGN PLUS#
I have purchased a copy of the Plus version with fully automatic adjustment and it seems excellent so far. I just wanted to ask if someone else has any experience with this product: Hi, if this is the wrong area of the forum I apologize and this should be moved to the proper place, thanks!
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