Canon 7d Firmware to Make Foucs at F/8

Canon 7d Firmware to Make Foucs at F/8

The subject of autofocus (AF) at an f/8 maximum discontinuity is something that frequently comes up in my writings near cameras, lenses and telephoto lens techniques for subjects like sport and wildlife. Information technology’s an often misunderstood subject in itself, but it besides continuously raises questions about which cameras will however provide AF when used with a lens+extender combination that delivers a max aperture of f/8.

For at present, I’chiliad providing this information for
lenses considering the majority of my lens and photographic camera reviews in the past take been about Canon gear. In the future, I’ll besides create a like resources to tackle other relevant manufacturers such every bit

A Two-Part Question

Whether a photographic camera will autofocus with an f/8 max aperture actually doesn’t tell the whole story these days. Every yr Canon is expanding the capabilities of their AF systems and the outcome is that more and more than cameras practice feature AF at f/8, but to varying degrees. Some cameras will simply allow the AF to work with a central AF betoken, and some will allow AF with the total gamut of AF points. The table below will tell you whether any sort of AF is possible with your camera at f/8, but it volition also try to provide up-to-date notes on which AF points work. This last role has become a little more than circuitous in recent years because there are now some newer lenses that evangelize such improved AF performance, that they allow more AF points to be used at f/viii than some older lenses.

Is Your Lens f/viii?

To notice out the maximum discontinuity of your lens+extender combination, you showtime demand to know the maximum aperture of the lens in its native form. This volition be written on the lens, and in the specifications. The almost common are f/2.eight, f/4, f/5.half dozen, f/half-dozen.3.

Next yous need to know that that a i.4x extender will increase the max discontinuity by one-end, and a 2x extender will increment the max discontinuity by 2-stops. For more information on extenders, and the math behind this increase, you tin can read my
ultimate guide to extenders and teleconverters.

If yous are a bit rusty on your f-stops, and so you can
refer to my f-end chart
in lodge to count either 1 or two stops upwards the chart from where your lens is.


  • Catechism 70-200 f/4 L IS + 2X Extender -> f/8
  • Catechism 800mm f/5.6 50 IS + 1.4X Extender -> f/viii
  • Canon 500mm f/4 Fifty IS Ii + 2X Extender -> f/8
  • Canon 100-400 f/4.5-5.six 50 IS Ii + i.4X Extender -> f/8
Read:  Samsung Galaxy Tab S Sm-t707a 8.4 Firmware Error

“Look! My Camera Isn’t On the List!”

If y’all don’t see your DSLR camera listed in the table, it does Not deliver any kind of autofocus with an f/8 max aperture combination. Sorry 🙁

Notation that at this time, this article is only referring to Canon DSLRs and does not cover Canon mirrorless cameras. If you have a Catechism mirrorless camera, please consult your manual for the time being.

Special Note Near the 5D Mark Three

When this photographic camera was get-go launched, it did not provide AF at f/8. This power was added in a
firmware update in April 2013, when the firmware was bumped up to V 1.two.i. If you have a 5D Mark III that does not appear to exist working for AF at f/eight, perhaps you have non got the firmware upwards to appointment. This is particularly possible if you lot purchased a 2d-hand camera. Check that firmware number in the menu system!

Special Note Virtually the 1D X

The 1D X also launched without the ability to AF at f/8, but this was quickly addressed with a firmware update in
October 2012 to Version ane.1.ane.
If your 1D X doesn’t announced to be delivering AF at f/viii, please check your firmware!

“Tricking” Cameras With 3rd Party Extenders

I’g enlightened that in some cases, it’s possible to pull a fast one on some older cameras into providing some sort of basic AF with f/8 lens combinations. In item, the 70D and 7D come up upwardly in chat quite often when used with Kenko extenders, or by taping over the contacts of a Catechism extender then the camera isn’t enlightened exactly what is fastened to it. This sort of not-recommended functionality is pretty much impossible to comment on because at that place are likewise many permutations. The information independent in the table below, and the footnotes, are the official word from Canon. Whilst some other thingsmay
be possible with some petty and trickery, y’all are merely not going to become reliable AF in those situations, nor an AF speed that’southward anything comparable to that which is officially supported. I simply wouldn’t bother with them, that’due south my two-cents. Cameras that do officially offer f/eight AF are bachelor on the 2nd-hand market for such great prices these days that it’due south not worth faffing around with sub-standard options.

AF at f/8 Data Table

Camera Model Autofocus Possible at f/viii Max? Which AF points are bachelor?
1D X Marking II Yep Upward to 61 points (with version Three extenders) See footnote.
1D X Yeah Center cross-blazon AF indicate, or eye+ surround.
1D C Yes Middle cross-blazon AF indicate, or centre+ surround.
1D Mark 4 Aye Centre AF bespeak only (linear point)
1D Mark Three Yeah Centre AF point just (linear point)
1D Marker 2 North Aye Centre AF bespeak only (linear point)
1D Mark Ii Yes Centre AF point only (linear point)
1D Yes Centre AF betoken only (linear bespeak)
1DS Mark Three Yeah Centre AF point only (linear betoken)
1DS Mark II Yes Centre AF betoken simply (linear point)
1DS Aye Centre AF signal simply (linear point)
5DS Yes Middle cross-blazon AF bespeak, or centre+ environment.
5DS r Yeah Center cross-type AF bespeak, or center+ surround.
5D Mark 4 Yes Up to 61 points (with version 3 extenders) See footnote.
5D Mark III Yes Centre cross-blazon AF indicate, or centre+ surround.
5D Mark II No N/A
5D No N/A
6D Mark II Yeah Centre AF point merely, except for two lenses which can evangelize 27 points. Encounter footnote. (100-400 II and 200-400)
6D No N/A
7D Marking II Yep Centre cross-blazon AF signal, or centre+ surroundings.
7D No N/A
90D Yes Upwards to 27 points
(ix of which are cross-type) See footnote.
80D Yes Middle AF point only, except for two lenses which tin evangelize 27 points. See footnote.
77D Yes Center AF point merely, except for two lenses which tin can deliver 27 points. Run across footnote.
70D No N/A
60D No N/A
50D No N/A
800D/Rebel T7i Yep Middle AF betoken simply, except for ii lenses which can deliver 27 points. See footnote.
Read:  I Need a Free Copy of the J700pvpu1aqa2 Firmware Download


6D Mark II

Canon 7d Firmware to Make Foucs at F/8
27 agile points with the 6D Marking II and sure lenses (listed below). The ones highlighted in blue continue to work as cross-blazon AF points.

Unlike the original 6D, the Marking II volition give y’all some use with f/8 combinations in the aforementioned was as the 80D.

  • AF at heart AF point,
     when any Version I, II or Iii Canon tele extender is used with uniform EF tele lenses

  • AF at 27 focus points,
     and the central ix points interim equally cross-blazon points, with the following lens + extender combinations:

    • EF 100–400mm f/four.5–five.6L IS 2 lens, with Extender EF 1.4x III
    • EF 200–400mm f/4L IS Extender 1.4x lens, used with Extender EF 2x 3

1D X Mark 2 & 5D Mark IV

61 AF Points

  • EF 100–400mm f/4.5–5.6L IS USM
    (lens versions I and II)
    + EF 1.4x Iii
  • EF 200–400mm f/4L IS USM
    with born
    i.4x + EF 1.4x III
  • EF 200–400mm f/4L IS USM + EF 2x Three
  • EF 400mm f/5.6L USM + EF one.4x Three
  • EF 400mm f/4 DO IS USM
    (lens versions I and II)
    + EF 2x III
  • EF 500mm f/4L IS USM
    (lens versions I and II)
    + EF 2x III
  • EF 500mm f/4.5L USM + EF 1.4x 3
  • EF 600mm f/4L
    (all lens versions)
    + EF 2x III

13 AF Points

  • EF 300mm f/4L USM
    (IS and non-IS)
    + EF 2x 3
  • EF 70–200mm f/4L USM
    (IS and non-IS)
    + EF 2x Three

ix AF Points

  • EF 70-200mm f/4L USM
    (IS and non-IS versions)
    + EF 2x I and Ii
  • EF 100-400mm f/iv.5-5.6L IS USM
    (lens versions I and II)
    + EF 1.4x I and II
  • EF 200-400mm f/4L IS USM
    (with built-in 1.4x)
    + EF 1.4x I and Two
  • EF 200-400mm f/4L IS USM + EF 2x I and Ii
  • EF 300mm f/4L USM
    (IS and non-IS)
    + EF 2x I and Two
  • EF 400mm f/five.6L USM + EF ane.4x I and 2
  • EF 400mm f/4 Practice IS USM
    (lens versions I and Two)
    + EF 2x I and 2
  • EF 500mm f/4L IS USM
    (lens versions I and Ii)
    + EF 2x I and II
  • EF 500mm f/4.5L USM + EF 1.4x I and Two
  • EF 600mm f/4L USM
    (all lens versions)
    + EF 2x I and Ii
  • EF 800mm f/v.6L IS USM + EF one.4x I, Ii and Three
  • EF 1200mm f/v.6L USM + EF 1.4x I, 2 and III
Read:  How Do I Check the Firmware on My Arris Modem?

EOS 90D, 80D, 77D & 800D (Rebel T7i)

Lenses providing this broader 27-point coverage at f/8 effective maximum apertures with the EOS 80D/90D/77D/800D are:

  • EF 100–400mm f/iv.5–v.6L IS Two + Extender EF 1.4x 3
  • EF 200–400mm f/4L IS Extender 1.4x lens + Extender EF 2x III (built-in extender non used)

If you are non using ane of these combinations, you volition be limited to a single key cross-blazon AF signal. This is often a betoken of HUGE confusion for Catechism users considering Canon makes a big deal almost f/8 autofocus being available for “upwards to 27 AF points”. What they inappreciably e’er mention is that it only works with these ii lenses, and if you don’t accept either of those, you just get one fundamental AF point. Information technology’southward withal not bad, though. It wasn’t long ago that you got no AF points at f/8 in this level of camera 🙂

Fifty-fifty more than confusing for Catechism users is that Canon appears to have removed the lis of compatible lenses from the manual for the 90D, even though it was included within the manual of the 80D, 77D etc.

Canon 7d Firmware to Make Foucs at F/8

Check Also

Asus Me Firmware Update Driver Tool Failed

Asus Me Firmware Update Driver Tool Failed

Asus Me Firmware Update Driver Tool Failed 11-xi-201710:18 PM #xi ROG Enthusiast Array reupens PC …