LNXGUY
(Post Master Supreme)
03/29/14 03:23 PM
This is back focused correct?

So the Canon 100-400 I just picked up has been giving me nothing but fits when combined with my 60D.. I cannot get a sharp image out of this fucking thing unless I switch MF and do it that way. Today is a perfect example.. This bird was maybe 15ft away @ 400mm f7.1 center focus point, AF set to one shot. I also made the focus point visible in the review so I know exactly where it was supposed to be... Dead nuts on the bird.. There's no fucking way this should out of focus. At least something in the picture is in focus, just not what I wanted. So now here's the thing, no MFA on the 60D and there's no way I'm sending in both the body and the lens to Canon for calibration. Is there a 7D in my near future?



Huggy
(Post Master Supreme)
03/29/14 03:33 PM
Re: This is back focused correct?

That's definitely back focused. But to be sure, go take some photos of absolutely motionless objects (street sign for example), off a tripod, and find out.

You have to remember that at 400mm, the ever so slightest motion by you or the subject with the camera will change the focal point quickly.

I have my 7D's autofocus set on the fastest setting as the medium setting isn't fast enough, not sure if the 60D has this setting or not.


LNXGUY
(Post Master Supreme)
03/29/14 03:40 PM
Re: This is back focused correct?

Having it on 'One Shot' though moving it around after the focus point has been established shouldn't make a lick of difference (As long as I keep the shutter button half pressed) I had the camera resting on the door of the car, shooting from the inside (Engine turned off as well).. Bird wasn't moving around either, no wind, no nothing.

I'll give the tripod test a shot.


flyEX #1
(Post Master Supreme)
03/29/14 04:52 PM
Re: This is back focused correct?

I'm betting it's the 60D. (as you could adjust the focus with pretty much any other canon dslr body in the price range before and after it) The same thing happens with my 60D using the 70-200mm 2.8 II with a 2X TC. MF only and even then the focus ring doesn't have enough travel on a crop body.

If you get another aps-c canon I will personally drive up to Canadia and kick you in the balls.


LNXGUY
(Post Master Supreme)
03/29/14 04:57 PM
Re: This is back focused correct?



I'm not going FF, don't have the extra $$$ and replacements for my fav lenses (10-22mm, 17-55mm) will be way too expensive. The thing that gets me is this... I've used another 100-400 (Which I currently also have in my possession) on this body and it was dead nuts sharp using AF. So perhaps a combination of both the new to me 100-400 and the body is the issue?

Is it possible for the body to get worse over time? Getting banging around inside it's case while in the boat? I just don't get it... Anytime I take it anywhere it's in a padded Pelican case.


flyEX #1
(Post Master Supreme)
03/29/14 05:30 PM
Re: This is back focused correct?

The mirror can get knocked loose but probably not if it's just this lens. Probably something micro-adjust could fix with a button press or two (if the 60D had it). Although I've seen what you can do to a nifty fifty and am pretty sure I own your old rebel XS that looks like someone cleaned the LCD screen with sandpaper...

I still have my 17-55mm. After buying a FF body I went a year with my widest EF lens being a 50mm. If you keep shooting, FF is only going to get more affordable. I want to say a used 5D2 is the same price as the new 70D and the FF sensor from 2008 still crushes it. I wanted to replace my 60D with the 70D until I saw the sample images.


LNXGUY
(Post Master Supreme)
03/29/14 06:06 PM
Re: This is back focused correct?

Dude, that LCD was fine before I sold it to Spotch

I'll try the other 100-400 I've got and see how it is.. I don't have this problem with my 10-22, 17-55 or the 70-200 F4 I've got. A lot of the time I'm relying quite a bit on the AF because the camera is about an inch from the water and it hasn't let me down yet..


scootergeek
(Post Master Supreme)
03/29/14 06:20 PM
Re: This is back focused correct?

Spotch would have sent both back to Canon multiple times by now. And then sold the lens to buy some other focal length (probably prime).

Get a 7D.


busfare
(Post Master Supreme)
03/29/14 09:38 PM
Re: This is back focused correct?

Don't get a 7D. The sensor is old and it's prone to ERR 40 which bricks the camera. Costs about $270 to fix.

If OP wasn't such a grizzly bear, I'd suggest a weather sealed Fuji XT1. Their lens selection will be pretty awesome come fall/winter.


LNXGUY
(Post Master Supreme)
03/29/14 09:52 PM
Re: This is back focused correct?

I guess it's MF for now at least. MOTHERFUCKER!!!!

Nate047
(Post Master Supreme)
03/31/14 05:02 PM
Re: This is back focused correct?

Bill you can do what's call "auto focus micro adjustment" to fix this issue. It's super easy, just takes a bit of time to do. Worth doing for each of your lenses probably. I do mine once, and then again if you send either the lens or body in for repair.

The "proper" way of doing this involves basically a 45-degree angled plane, but you can just use a ruler and eyeball it for the same results. Shoot me a PM if you'd like more info.

Nate


Senor Eduardo_82
(Post Master Supreme)
03/31/14 05:21 PM
Re: This is back focused correct?

Baby got back (focus)

scootergeek
(Post Master Supreme)
03/31/14 05:35 PM
Re: This is back focused correct?

 Originally Posted By: Nate047
Bill you can do what's call "auto focus micro adjustment" to fix this issue. It's super easy, just takes a bit of time to do. Worth doing for each of your lenses probably. I do mine once, and then again if you send either the lens or body in for repair.

The "proper" way of doing this involves basically a 45-degree angled plane, but you can just use a ruler and eyeball it for the same results. Shoot me a PM if you'd like more info.

Nate


Does the 60D offer micro-focusing? I thought the whole discussion revolved around it not having that feature.


LNXGUY
(Post Master Supreme)
03/31/14 09:11 PM
Re: This is back focused correct?

 Originally Posted By: scootergeek
 Originally Posted By: Nate047
Bill you can do what's call "auto focus micro adjustment" to fix this issue. It's super easy, just takes a bit of time to do. Worth doing for each of your lenses probably. I do mine once, and then again if you send either the lens or body in for repair.

The "proper" way of doing this involves basically a 45-degree angled plane, but you can just use a ruler and eyeball it for the same results. Shoot me a PM if you'd like more info.

Nate


Does the 60D offer micro-focusing? I thought the whole discussion revolved around it not having that feature.


It doesn't, but what I just picked up tonight does. Reviews are great, new AF system blows the 60D out of the water, FF wasn't an option... I was really thinking about the 7D but the reviews of it are less then stellar. (Err 40 issues, not very good high ISO, etc) No pricing available for the 7D Mark II yet either which should be released in the next month or so. (Probably way out of my price range anyhow) so I thought what the fuck, why not get the most of all the $$$ I've dropped on lenses? The MFA feature alone is worth it to me.



flyEX #1
(Post Master Supreme)
03/31/14 09:38 PM
Re: This is back focused correct?

Nice. Canon showered it with good shit compared to the 60D. And definitely a ton less than the 7DmkII if it is ever a thing. Wish I shot moving stuff enough to justify one.

scootergeek
(Post Master Supreme)
04/01/14 07:27 PM
Re: This is back focused correct?