How to calibrate lens autofocus WITHOUT buying a tool! [Lens Calibration Tip]

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Have you ever encountered the frustrating issue of your lens not consistently achieving pinpoint sharpness when using autofocus? Rest assured, you're not alone.
This problem often arises due to the gradual drift of lens calibration over time. The good news is that you can easily address this without the need to invest in specialised lens calibration tools or charts. All you need are a few simple items:
➡️ A whiteboard or similar flat surface
➡️ A standard ruler
➡️ A pen or pencil
➡️ The lens you wish to calibrate
➡️ Your camera mounted on a tripod
In this enlightening demonstration, I personally guide you through the process of calibrating the autofocus on my Canon 85mm f1.2 lens. Rest assured, the steps are applicable to most camera brands and lenses, making it universally valuable.
Say goodbye to the frustration of inconsistent autofocus and unlock the full potential of your lenses with this simple calibration technique. Watch the demo now and take control of your autofocus accuracy.
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Опубликовано:

25 янв 2020

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Комментарии : 342

@Anvilshock Год назад

On such small differences in focus, the thickness of the rulers starts to matter, though. Thick rulers bring farther numbers a little bit back into focus, so, your results may be off again minutely. Not hugely, but enough that it can matter again. That's why a printed ruler that's necessarily at the same height as the focused line is that little edge better than physical rulers.

@statwizard 7 месяцев назад

3 years old, and still extremely helpful today. Thank you for this key information at virtually no cost. 👍👍

@Smokingstrobes 4 года назад

Explained very well. Let me share this with my list tonight.

@luistunonjr.304 4 года назад

Many thanks Karl. That's exactly what I've been doing this week with some of my older but most liked lenses and everyone else simply makes it so extremely complicated and at the end tries to sell you some sort of tool of which I now have a collection of and enough to open my own online store. Thanks again.

@inamurato 4 года назад

Super timing! I've been lately suffering from misfocus on some lenses. Great, thanks!

@SimonPhillipsPhoto 4 года назад

Thank you Karl this was really use full, I'll have to do this on one of my lenses I've had a bit of hit and misses with when it comes to auto focus.

@ColoursofLight 4 года назад

Thats sooo Useful tip, I have struggled with the same problem for a very long time and didn't know what the problem was. Thank you Guru Taylor !!

@VisualEducationStudio 4 года назад

A lot of the same questions or comments keep coming up so I'm listing them here and pinning answers as unfortunately we don't have time to keep answering all the same questions: 1. Q. Mirrorless cameras don't need calibrating! 1. A. Yes we get it :) this video shows a DSLR, there are lots more DSLRs than mirrorless cameras and we're pretty sure the DSLR users will be happy as they're not all queuing up to buy a mirrorless. 2. Q. Can you AF calibrate zoom lenses? 2. A. Yes with certain cameras you can as they have two point lens calibration, check in your menu 3. Q. There's software and tools you can buy to do this! 3. A. Yes there is. That's why I showed you how to do it without. 4. Q. It looks like you pulled the focus back too far and the number 19 was sharper than the 20? 4. A. Maybe I did but that does not in any way detriment the effectiveness of this video in showing people what to do. 5. Q. I read that that calibration should be done at a much greater distance 5. A. I'm happier calibrating lenses at the distance i'm most likely to be shooting with them. 6. Q. Why did you use a thin line on it's own to focus and not the rulers? 6. A. To make sure the camera had no choice but to focus on the line and nothing else 7. Q. Did you then switch to manual focus before you took the shot, in case it refocused on the rulers? 7. A. Yes.

@mikeparker9812 4 года назад

Thanks, 2 has answered my question, and I learnt more from some of the others 👍

@leifnilsen6107 4 года назад

Thank you. I'm a very big fan of your work.

@dongerramarco9617 4 года назад

thank god i got both technologies

@glamourseeker Год назад

Hello!! I am VERY glad to see you do a complete video on this, as I have been getting contradictory information on the importance of this procedure for each lens that you have a focus issue with, isolating the possibility of camera damage! If a level of photographer such as yourself does not consider it rubbish, then I feel much better continuing to eschew the importance of knowing - and performing - this procedure to my “followers” who question best practices for obtaining the highest quality images they can obtain with their equipment. Take care, and I am looking forward to devouring all that you and your team is making available on your education site! BLAYZE! USA!

@sarajitsil 4 года назад

Very helpful video. Neat, simple and absolutely practical! Thanks Karl for sharing your knowledge with us.🙏

@philipmason 4 года назад

Brilliant video and super helpful. It's all these little things that make a big difference. Thanks Karl

@big_turk 4 года назад

I've needed to do this for a while now and this is a perfectly simple explanation. Thanks!

@beltxabeltxa 4 года назад

I have tried these methods with other printouts, I will try your method today, I have a few lenses to get thru. hope it works.Thanks, great tutorial

@jamesgerboc 4 года назад

It’s important to reinforce the need to assure your board and rulers are flat. Any bowing or curvature will impact your results.

@kanarie93 3 года назад

put a piece of glass on the table, and work on the glass, thats 99.999% flat made, "flatter" then most tables at least

@GrymmsPlace 4 года назад

So useful. This video is perfect. Time to check all my lenses. Thank you for posting.

@stiofanmacthomais 4 года назад

Brilliantly simple Karl. Great video!

@tanweercaa 4 года назад

Thanks a lot Karl, I have done this before but your method is super easy, super handy. God bless you.

@kreygscott 4 года назад

Another brilliant video Karl. Thanks for sharing mate.

@careylee5951 4 года назад

Very clear tutorial , thank you Karl!

@maherali5735 4 года назад

Thank you very much Karl, I always appreciate your expertise. 👍🏻👍🏻👍🏻

@mntdronesolutions 2 года назад

Thank you for the information and for taking the time to make a video to share it!

@jswinsphoto 4 года назад

Love this super east way of doing the AF Tune. I just got a new 85 this afternoon... it was out by -18 right outta the box!! WOOF! Thanks for amazing content as always Sir! - J

@saulmirandaaliaga 4 года назад

Thank you very much, Karl. This was a helpful video!

@johnl4469 4 года назад

Thanks Karl, brilliant mate.

@robsonoliveira8867 4 года назад

Great tips Karl!!! it Helps a lot!!!!

@-NyghtLynk- 2 года назад

Thank you for this tutorial, immensely useful!

@johnhoughton7794 4 года назад

Great video with good information for a Sunday.

@azshleavia2933 4 года назад

This helped me..thanks Karl 😊

@samdub Год назад

I had no idea it was this simple. Thanks for sharing!

@adrianhydephotography Год назад

So helpful wonderful video and so well presented straight to the point. Thanks so much for uploading.

@johnhjic2 4 года назад

Nice explanation Karl.

@StunnafulPhotography 4 года назад

WOW! Probably one of the BEST educational photography clips I'd seen on RU-vid since I'd been a photographer! Excellent video!

@didimiorios3781 4 года назад

Great advice, thanks!

@cooksnj 3 года назад

Thank you for taking the time to do this.

@VisualEducationStudio 3 года назад

My pleasure!

@estudiokobe 4 года назад

Súper useful, thank you!

@Just-a-bystander 3 года назад

Your videos are such a great resource. Explained simply and precisely.

@VisualEducationStudio 3 года назад

I appreciate that!

@camachophotography 4 года назад

Thank, very simple and useful!

@tharakajayasinghe 3 года назад

This the literally the best!! Thanks!!

@Memories4lifemedia 4 года назад

Great tip thanks

@CaliRico2001 2 года назад

Thanks so much for video helpful to much!

@CoreyVixie 3 года назад

Incredibly useful, right to the point. Thank you!

@VisualEducationStudio 3 года назад

Cheers

@LoveLunaFam 3 года назад

This is literally the best video I’ve ever seen on the subject. Thank you so much because I could not figure out why my pictures are not coming out sharp with my new camera.

@ravindra7421 3 года назад

Make sure select calibrate 'by lense' and not 'by distance'. otherwise the other lenses will become out of focus I suspect.

@SharonKlinkenberg Год назад

Thank you this is awsome

@choschiba 2 года назад

Thank you so much for that tip!!

@brittanijackson2968 4 года назад

Interesting thanks for the tip

@adedotunajibade 4 года назад

Very helpful. Thanks!

@connorpetersen8325 2 года назад

Thank you so much

@JB-ou6fl 2 года назад

Thanks Karl. This video is very helpful for me.

@VisualEducationStudio 2 года назад

You are welcome

@CAydenPentHousePhotography 4 года назад

Nice one Karl

@JulesMoyaert_photo 4 года назад

Very useful! Thank you! 👍👍👍

@erroneousbatch Год назад

Excellent vid, ta.

@benstorr 3 года назад

Perfect. So simple 👍

@gemini2261 4 года назад

Brilliant thank you!

@sjdyt 13 дней назад

Excellent and clear explanation on how to do this, thanks.

@VisualEducationStudio 13 дней назад

Glad it was helpful!

@michaels8597 4 года назад

Karl is on point as usual////

@gerryproteau4257 3 года назад

Thanks a bunch, this helped me calibrate my 4 lenses. In particular my 100-400 mm with a 1.4X extender is VERY improved.

@beaver6969lv 4 месяца назад

How far away was your camera to the target? I have same lens and extender and need to adjust it. thanks.

@jcmc60 4 года назад

Useful, thankyou.

@lucysilva8080 2 года назад

Thank you

@ironmike2732 3 месяца назад

Thank you, you have explained very well, how simply and inexpensively this process can be done! This tutorial has helped me to simply calibrate a rear focused lens on my camera. Cheers!

@VisualEducationStudio 3 месяца назад

Glad it helped!

@kolabuzlu 4 года назад

Thank you!!

@THSimagery 4 года назад

Thanks my guy

@SilverVoxMusic 4 года назад

Well I never knew that, thanks Karl.

@memoriesstudiopk 3 года назад

very help full video tutorial

@grahampayne5073 4 года назад

Clean and simple. Thanks

@VisualEducationStudio 4 года назад

thanks

@TheTedazerty 4 года назад

Thanks!

@piotrpindel7724 3 года назад

Awsome tip...Thanks pal 👍😎

@VisualEducationStudio 3 года назад

Cheers

@joebloggs4458 4 года назад

thanks so much carl, i always thought you had to go to specialists to calibrate your camera, now i can do it myself and save a packet.

@hemantkharkongor5433 4 года назад

Great content as usual...thanks ...👍...much gratitude

@VisualEducationStudio 4 года назад

Thank you

@LTdammit Год назад

Very helpful and simply put video. Thanks for the info, hope it works for me!

@VisualEducationStudio Год назад

Best of luck!

@terjebrattelid7574 3 года назад

Thank you!

@VisualEducationStudio 3 года назад

Welcome!

@romaycorrales677 4 года назад

thanks for sharing Master 👌📷🙌🏻

@Ahmad_Askar 4 года назад

thanks a ton

@chikondilipa8090 3 года назад

Wow. So educative

@VisualEducationStudio 3 года назад

Cheers

@mariosvasiliou7140 3 года назад

Thank you so much. That is soo Useful tip

@VisualEducationStudio 3 года назад

Glad it was helpful!

@Ashley-rj8up 4 года назад

Just did this with mew new Canon 500mm F4 Mark I. I had made a white board out of 4 pieces of A3 taped together and place my camera and tripod quite far on the floor in the distance. Focused on the line, then Manual focused to make sure it was not in focus, switched back to AF focused on the line, took a snap. then placed the rulers took a snap, both sides 10cm was pin sharp and 8 was blurry, 9 was sharper and same on 11 and 12. Fantastic guide. Subscribed!

@VisualEducationStudio 4 года назад

Thanks Ashley

@sharpskilz 3 года назад

very helpful

@sutashiku Год назад

Extrêmement utile. Merci, Monsieur.

@VisualEducationStudio Год назад

Merci beaucoup

@michaelarevalomagaling1344 3 года назад

Thank you for sharing this.😊

@VisualEducationStudio 3 года назад

My pleasure 😊

@thariduperera9762 4 года назад

very helpful, thanks

@VisualEducationStudio 4 года назад

You're welcome

@Gremlack13 3 года назад

This is very nice and simple. I have noticed my ef 50 1.8 on my rp tends to back focus a little bit. I need to acquire a tripod and use this method to calibrate. Good, simple video.

@VisualEducationStudio 3 года назад

Cheers.

@stavrosk.2868 3 года назад

Extremely useful!!!

@VisualEducationStudio 3 года назад

Glad to hear that!

@henry-louisguillaume532 4 года назад

To calibrate our AF lenses in lab we use Reikan software wich is really good even with zoom lenses and semi automatic. The soft gives also a correction chart at the end of the process.

@zollieuncle9647 3 года назад

Thank you so much Karl, this was very useful, so that I could avoid investing into an AF calibration tool, not to mention returning lenses along with a dispute procedure. The calibration tools I have seen always had the ruler stricktly set to a 45 degree angle relative to the plain of focus. In your tutorial there was little attention paid to that angle; does that setting play a critical role at all?

@matuskotlar274 Год назад

thanks

@vinaychinapanjwani2060 3 года назад

You are great

@viralbeats806 4 года назад

There is software calles FoCal for automatic calibrate the lens but that is expensive, this method is useful thanks Karl Tylor....

@Robert-gp7kx 3 года назад

Yes, verry helpfull this video. I just subscribed.

@VisualEducationStudio 3 года назад

Thanks for the sub!

@elsiadajew9694 2 года назад

Thank you very very much, mr Karl! It was really helpful!

@VisualEducationStudio 2 года назад

Glad it was helpful!

@user-cj1gu8zj4u 25 дней назад

Thank you!! 👍👍

@VisualEducationStudio 24 дня назад

Welcome!

@denibullguantana6999 3 года назад

Karl you just saved me 50. Thank you.

@dobby240 3 года назад

No way! I had no idea this was a thing! Shame I didn't do this before I went out and got my first kingfisher shot today. Thanks for the information.

@JGZphotography 4 года назад

Why fuss with rulers? I use a yellow tennis ball with a large X mark and lay the ball on the grass or any rough surface, set the camera mode in Manual, open the aperture to max open, adjust ISO/shutter speed for a decent exposure, AF can be on either Single or Servo (I use servo as I shoot action sports), snap a shot focused on the X mark at about a 30-degree angle (distance from the ball depends on lens focal length and then zoom in on the LCD to view where the center of focus falls. If the center of focus is in front of the ball (front focus) or behind the ball (back focus), then make the adjustment as described in the video. If calibrating for a zoom lens, Canon gives the options to adjust for Telephoto and Wide). As a note, there might be a slight interaction in the extreme ranges, so additional fine-tuning may be required. For Nikon users, only a single adjustment for zooms, and I recommend calibration at the max zoom, where the depth of field is narrower than at wide-angle. Mirrorless cameras do not have such calibration adjustments as they AF at the image sensor, rather through the prismatic glass system into a separate focus sensor.

@surendranrs4397 3 года назад

Thank you wery well...

@VisualEducationStudio 3 года назад

Cheers

@lockness3723 4 года назад

Also it will help if one uses some masking tape to secure the white board to prevent movement.

@mhc2b 4 года назад

This technique works great AS LONG AS your camera has focus-calibration capabilities. I, like you, am a Hasselblad shooter, which, to my knowledge, does not offer focus calibration. Or does it?? I would presume our only option, should it ever be needed, would be to send it back to the factory for calibration.

@Pharesm 2 года назад

Great video! Much thanks, that is so useful! Do you happen to have a video on how to detect decentered lenses? Just asking, since I seem to have a 85mm lens that's sharp on the bottom and fuzzy on the top...

@dongerramarco9617 4 года назад

i do this these tests with a remote to reduce movement