Shutter button AF vs. Back Button Focus

Wilt wrote in post #19005536
Just surfacing this thread to added visibility, for getting more input to the poll.
Thus far, as of 2/7/20, 88% of users use BBF.

Well, actually, 44 members out of a total membership of 398,360 have said that they use BBF.

My suspicion is that the majority of those who don’t use BBF either don’t know about it or simply don’t care. It is really only an issue for those that do.

No, 48 voters!


...which is why I seeking more input!

Gregsiem wrote in post #19005544
My suspicion is that the majority of those who don’t use BBF either don’t know about it or simply don’t care. It is really only an issue for those that do.

You are unfortunately probably close to the truth. Kinda like oil dipsticks now missing on most German autos made since about 2005...the only opinions are expressed by those who USED the dipstick to read the oil level...unlike the son of a close friend, who had an engine seize up because there was no oil in the engine, in spite of it having a dipstick.

john crossley wrote in post #19005551
28 + 16 = 44

Why does POTN own data show different?T

Look, John, I don't want to debate with you.

48 voters. Those using BBF = 32% + 56% = 88%. Numbers provided by POTN poll computation, not mine. Don't shoot the messenger...
If you have a beef with computations, write to Pekka.

Grew up with manual focus. Canon FT through to Sinar View. Focus and recompose was the technique before they called it that. Additionally, my thumb falls on the button naturally, so why not use it?

ThreeHounds wrote in post #19006424
Grew up with manual focus. Canon FT through to Sinar View. Focus and recompose was the technique before they called it that. Additionally, my thumb falls on the button naturally, so why not use it?

Well, when I used a view camera, I used a loupe on the ground glass to focus on the specific point of the subject I wanted in sharp focus. I did not "focus and recompose" with a view camera.

I did with my Canon F-1 cameras, though.

Shooting with an EOS R is closer to shooting with the view camera. I choose the point I want in sharpest focus and focus on it (sometimes even magnifying, like with the loupe) without recomposing.

And 44 responses of 48 voters = 44/48 = 88%
...I fail to see what the argument is even about!

Wilt wrote in post #19006606
And 44 responses of 48 voters = 44/48 = 88%
...I fail to see what the argument is even about!

Because after I posted the following, which at the time was correct, you started wittering on about it been 48 NOT 44.

john crossley wrote in post #19005543

Wilt wrote in post #19005536
Just surfacing this thread to added visibility, for getting more input to the poll.
Thus far, as of 2/7/20, 88% of users use BBF.

Well, actually, 44 members out of a total membership of 398,360 have said that they use BBF.

RDKirk wrote in post #19006524
Well, when I used a view camera, I used a loupe on the ground glass to focus on the specific point of the subject I wanted in sharp focus. I did not "focus and recompose" with a view camera.

I did with my Canon F-1 cameras, though.

Shooting with an EOS R is closer to shooting with the view camera. I choose the point I want in sharpest focus and focus on it (sometimes even magnifying, like with the loupe) without recomposing.

You are entirely correct, I didn't mean to infer I focused and recomposed with the Sinar (F&C would be cumbersome, at best, aside from unnecessary). Compose, focus, adjust film and lens planes. The slrs, 35mm and med. format were the applications.

Learned with MF camera, retain AF on shutter button. The MF camera was a Pentax K1000. A number of years ago I tried BBF on a Canon DSLR, and it didn't add positively to my experience.

Now on the 5DMkIV, I reprogrammed the SET button to do ISO adjustment with the Main Dial. I also use the DOF preview button to switch between One Shot and AI Servo when the button is held. Regarding the DOF preview button, I used to use it on the Pentax and I found it to be good. As I've not really found it helpful in the digital age, using it to switch AF modes has been helpful.

john crossley wrote in post #19006627
Because after I posted the following, which at the time was correct, you started wittering on about it been 48 NOT 44.

As I wrote in post 18, "48 voters." With 44 of the 48 responses indicating use of BBF. And that is not necessarily a representatative sample of the general POTN population, not without a much larger sample (more voters!)
Even in the screen image which you posted, while you dwelled on the votes in the BBF category, you ignored the '48 voters' in the lower left of that screen capture. What was of greater importance was not how many BBF, but how few voters.

Wilt wrote in post #19005536
Just surfacing this thread to added visibility, for getting more input to the poll.
Thus far, as of 2/7/20, 88% of users use BBF.

Wilt, in the above quote you state that 88% of USERS use BBF. They do NOT. It is 88% of the people that actually voted that use BBF, and NOT 88% of the number of users. And at that time the total number of votes for BBF was 44.
At the time you made the above post POTN had 398360 members. Out of that 398360 members 44 of them had voted for BBF.

Considering your obsession with spreadsheets and compound interest rates over 50 years, I am struggling to understand why you don't understand the above.

john crossley wrote in post #19006889
.Wilt, in the above quote you state that 88% of USERS use BBF. They do NOT. It is 88% of the people that actually voted that use BBF, and NOT 88% of the number of users. And at that time the total number of votes for BBF was 44.
At the time you made the above post POTN had 398360 members. Out of that 398360 members 44 of them had voted for BBF.
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John,

I believe that when Wilt said "users", he was referring to those who have used this poll.

You seem to have assumed that he meant forum users. . You know what assuming does, don't you?

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Wilt wrote in post #19005536
Just surfacing this thread to added visibility, for getting more input to the poll.
Thus far, as of 2/7/20, 88% of users use BBF.

You were right on the money, Wilt. . At the time of your post, 88% of the poll's users claimed to use BBF, just like you said.


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