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Optimizing AF with the Canon 85mm 1.4L IS?

YuengLinger said:
Hi suspect that some of my problems, especially the completely out of focus shots in between good ones, might be coming from my fingers slightly turning the focus ring. I'm trying now to find a grip that holds the lens steady but doesn't result in my fingers moving the ring.

Also, I think my expectations might have been a bit high.

As for having more problems on the 5D Mark 4, is it possible the AF system is too fast for the optical elements to keep up with? Could the older, slower AF system on the 5D III be a better match?

I recommend using the back-button focus and following the subject at all times. Also, for focusing I would suggest either 4 AF point expansion or 8 AF point expansion, as suggested here:
https://www.youtube.com/watch?v=0i2_CHhp9Q4
Nelu
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M50 Eye tracking Preview Video - let's discuss

Talys said:
Jester74 said:
Talys said:
Jester74 said:
Do you use the center AF-point and recompose, or choose the closest of the many AF-points? Cos recomposing can cause shifts in focus....

Eye AF should not work like that. You should be able to select a zone, and it finds the nearest eye to you and AF's to that. On the video, it looks like it follows her after it locks, but I thought I read somewhere that it was only compatible with one-shot AF.

Yes, it should work like that. But I meant his original camera, the 5D mk III, which has a lot of AF-points...


Ahhh, I see. I think there was a poll recently, and the most popular technique was center point zoomed out, and crop. This is what I do on 6D2, though if I want upper high resolution I will either select another AF point or MF in magnified live view.

I don't remember that poll, but on my 5DmkIII I used the joystick to choose the closest AF-point and slightly recompose the shot if it was necessary. I do this on my 1DX now and it works mostly...:) If one single point is not enough, I set single plus 4 adjacent AF-points. It helps when the contrast is not enough for 1 point.
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PetaPixel: 6D2 vs. 6D1 noise comparisons

mistaspeedy said:
I have also never seen this method for measuring/evaluating noise.

I tend to agree with the data from dxomark, which I can also cross-reference with other sites like dpreview and view the images for myself.

So my opinion does not exactly line up with theirs (Petapixel).

dxomark says that the 6D mark II has slightly less noise over the entire ISO range (this is when we look at highlights and midtones... SNR evaluation)

However, when we look at dynamic range and shadows, the original 6D has an advantage across the entire ISO range.
Tonal range seems to be about the same.
Color sensitivity is better across the whole range for the 6D mark II
Of course, rarely mentioned, the 6D mark II images will be sharper due to increased resolution, even when downsized to a smaller size.

Seems to me that most of the time, I would rather have a 6D mark II than a 6D, with the exception of high ISO shooting combined with lots of shadows in the frame.

There's less difference in color sensitivity than there is in tonal range. The only perceptible difference is in DR.

https://www.dxomark.com/Cameras/Compare/Side-by-side/Canon-EOS-6D-Mark-II-versus-Canon-EOS-6D-versus-Canon-EOS-5D-Mark-III___1170_836_795
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PetaPixel poops on the 6D2 sensor

Isaacheus said:
neuroanatomist said:
jester73 said:
I have a clear analogy of the situation with the sensor 6d mark 2:
If the 5d4 sensor is the original Canon sensor of the last generation, then the sensor 6d mark 2 is like a "Chinese fake", as Canon claims to use the most advanced sensor available. Regardless of how much it is worse than the original, or how much it justifies its price, or how many people will buy a camera with such a sensor, it remains a "fake".
And on any serious trading platform sellers of fakes will be banned for the sale of fakes.
If someone wants to sell sensors of the previous generation, then do not talk about the last generation, and do not deceive customers.

The analogy for the 6D → 6DII sensor is the 5DII → 5DIII upgrade. The sensor was basically the same ('if it ain't broke, don't fix it), pretty much everything else got a major performance bump.

I'm not so sure everything got an upgrade though; it really looks like all that's improved is the af (both stills and video) , screen and fps. The sensor has a small resolution bump, but otherwise is the same tech, and the video quality has been downgraded from the looks.

I was under the impression the 5d2 to 5d3 added quite a bit more, dual cards, better video, headphone jack etc. Correct me if I'm wrong though.

My opinion at this stage is that the 6d 2 is an improvement overall, but for the cost, it really fell short of the potential camera it really could have been.

RGB+IR metering
Flicker reduction

If you've never shot sports under artificial lighting (or anything else under the kind of lights found in most gyms and most stadiums that don't host NBA, NFL, MLB, or major college teams in sports that are regularly televised), you have no idea how much those two are worth.

Particularly the flicker reduction. Not only does it time the shutter to release at the same point in the 100Hz/120Hz cycle such lights blink at, but it does so at the *peak* of each cycle. Not only do you get near uniform color and brightness from one frame to the next (and very little to no color shift from top to bottom of the frame), but you gain anywhere from 1/2 to a full stop of shutter speed where you need it the most!
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Canon Announces the EOS Rebel T7

hendrik-sg said:
AvTvM said:
who cares about that mirrorflicker. Really only targeted at those total n00bs convinced that "only a DSLR captures really good, *pro-quality* images" ... ;D

You are posting the same in all threads. You have exactly no argument for your opinion, it's just hate. Why?

I believe that since the first time AvTvM looked in a mirror he has hated them ever since ;)

But to give him his due, since Canon introduced the 5DS/r with its motorised mirror he has at least changed his favoured insult from "mirrorslapper" to "mirrorflicker" as no one could ever accuse the 5DS of having mirror slap. :)
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100-400mm: Canon vs Tamron vs Sigma

AlanF said:
It requires the dedicated Tamron extender and I haven't bought it - the Canon won't fit and the Sigma doesn't AF. By the way, I have done more BIF testing and the Canon 100-400mm II is in a different league, whatever Dustin writes. I aim at birds and not a running dog.

I see... I had rather the Kenko extender in mind. It is compatible with virtually every EF lens and has a good optical quality. Have you used Sigma 100-400 with an extender? Can you recommend it?
As you indicated a good synergy with M5, I might as well get a M100 to use as an 1.6x extender.

I was also sceptical about Dustin's AF comparison with Canon 100-400. But for my usage (80% landscape + 20% some moving object like animals or people) Tamron would be definitely sufficient. Sigma has obviously more problems with AF, as you indicated and from different reviews. Better IS and AF is the reason I favour the Tamron, even if IQ is a bit worse than Sigma.
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Will Canon ever make 1 inch DPAF sensor?

AlanF said:
RGF said:
Can someone explain to me what a 1" sensor is? Is that the diagonal measurement? Or something else? Is there a good website that explains all this stuff?

Thanks

Rich

I Googled your question and this site came up first with the explanation.

https://www.quora.com/Why-are-1-inch-camera-sensors-13-2mm-x-8-8mm-so-labelled-In-what-respect-do-they-measure-an-inch

Thanks. So a FF camera has a 3" sensor. Seems strange that this term would still be used today. Probably used to confuse the consumer to think that they sensor is much larger than it really is.
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Time stamp in 6DII files are 1 hour apart from JPG to CR2

Leandro said:
I went out to take some shots today. I turned off GPS and also daylight saving time (as it ended in Brazil two weeks ago). My CR2 and JPG files show the same time stamp now.

I still say to let Canon know. It indicates bag in their file saving code. As a programmer, I would appreciate the observations......
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Tokina to Announce Opera 50mm f/1.4 FF

Well done Tokina.
I'm surprised Canon haven't updated their 50mm range.
I would have thought it would have been one of the easier lens to improve upon.
50mm is such a classic focal length.
I'd have thought Canon would want their to be recognised best in class.
I've had the Canon 1.8 , 1.4 and currently I have the 1.2.
I've enjoyed all three.
I'm actually very happy with the 1.2
I seem to be in a minority here but I find it a very good lens and much easier to use than the 85mm 1.2.
I find it sharp.
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AF setup help needed

hne said:
Viggo said:
hne said:
Did just that but with a 5DmkIV. AF Case 1 with default settings and initial point autoselect works well enough for me. Straight on at 15-20km/h can get tricky at f/1.4 and 3m distance but for me a third in focus is acceptable at such circumstances. In really heavy snowfall, lower tracking sensitivity. Dunno which af case that needs though.

Thanks!

Auto initial? So you use all 61 points with color/face tracking? I’ve tried that also, no luck. I’m thinking this might be one of those scenarios were nothing works, because usually it’s very very good...

Sorry, wrong wording. I've got spot af as default on shutter half press with af-on doing all-point auto select based on subject at the point that was active. If I can't keep up with motion and keep a single point on target, I have a single button for my thumb to make the camera do Magic for me.

Ah, that makes sense, I use af on for af, but use the *-button for a different AF set up.
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Any way to re-map aperture control in aperture priority mode?

Most of the time I shoot in manual mode, but often, especially in a situation with a good amount of light, I change over to aperture priority, and let the camera figure out the best shutter speed. However, I don't like that aperture priority mode changes the aperture control from being on the back dial of the camera to the wheel on the top. It's confusing to have the aperture be controlled by different dials depending on the mode. Is there a way to re-map the rear dial to be the aperture in Av? Looks like all of the custom controls only affect what these dials do in M mode. I guess I could map it so that the wheel on the top is always aperture, but I like having that one be shutter speed whenever I am in manual. This is on a 5D4 by the way. Thanks.

Pentax new full-frame camera. Interesting.

It's not really a 'new' camera. It's the exact same as the first version, just with the logic board upgraded to be slightly more power- and heat-efficient, so the processor (AF operation and IBIS operation) can be pushed a little further. It's basically just one step away from what Fuji does to their cameras with free firmware updates.

Other than that, it's the exact same system as before. They're even offering existing owners the option to send in their 'mark I' and have the logic board swapped out for a nominal fee, turning them into mark IIs.
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Here's the Canon EOS 4000D, A New Entry Level DSLR

Hector1970 said:
Looks like a reheated version of a Canon APS-C from 10 years ago but all plastic including the mount.
If it’s really cheap it might be a handy backup camera.
Maybe Canon hope it will get people into DSLRs and get addicted to buying lens.
Like a drug dealer giving free samples.
I think it will cannibalize their lower end cameras.
The margins will be so low I couldn’t see it worthwhile unless they see Massive volume in high populated countries that aren’t buying DSLRs.

The biggest thing keeping me from using t2i as a backup camera after I got into xxD bodies is the battery. It's such a pain having another charger and another battery type.
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Canon U.S.A. Launches a New Family of Laser and Lamp LCOS Projectors and Interchangeable Lenses

AvTvM said:
Canon ... 2018 ... no 4k ... lol :P

If you use it for photo viewing: yes, that's bad.

If I look at the prices for the LASER models and the specialty lenses I think: It is for professional (1) presentations in large halls (conferences, teaching @ universities) and (2) for display stands profiting from the extended lifetimes at high brightness.
4k isn't that important for these applications, less pixels, less pixels which could be malfunction.

So it is not mainly intended for your living room (or mine) and @ 11 000 $ it much more expensive compared to an 4k OLED screen with 60 inches which is great for photo viewing. I own a 3year old 500 EUR/$ 4k TV with a conventional LED backlit panel and just that is very cool for viewing images @ 3240 x 2160 pixel resolution.
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Flashpoint (Godox) R2 and Canon Speedlights

JPAZ said:
First, thanks!

Second, please consider all you can do (even with someone's help or with Post-it notes), CanonFanBoy. You are way more knowledgeable about this than I am and have skills that I only hope to achieve someday. Keep posting!

At this point, I have a 430 EX RT iii and a 430 Ex ii. I am "retiring" my Phottix Stratos ii trigger and receiver. The Flashpoint R2 trigger (not the pro version) and receiver works seemingly well and I can have one flash on top of the trigger hotshoe with another flash off camera. So, I just ordered another R2 receiver (and more Eneloops ;) ) to get both lights off camera. If I ever want to add more lighting, seems I can get a Flashpoint RT device or any device that can connect to another R2 receiver. Am I correct in this idea?

If I had it to do over again I would go all Streaklight 360s (Big power compared to speedlights and less money overall by far). It takes, I believe, 5-6 Canon 600's to equal 1 Streaklight 360 power wise. Canon makes very nice flash though and that new 470 is going to be killer.

You are correct and thank you. :)
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