7D Mark II - Focus Discussions

The people at Fred Miranda are telling me how great canon Canada is so I have decided that I will try them one more time as a CPS member and send in my 100-400 II. So far I think my new 55-250 STM is sharper but I'll have to do a more careful comparison when I get home. It is blowing me away on the LCD. The addition at 10+ clicks of MFA with a TC is curious because not everyone needs them. We'll see if they help me or brush me off. They all told me they communicate by email so I like that approach.

I checked their site. Turn around time for gold members is 6 days and I still have to call and get the turn around times for non members.

One more thing. I was told Purolator will not insure used camera equipment so unless you have pro coverage you ship at your own risk. I found this at canons site.

Insurance to cover loss and/or damage to equipment during incoming shipment to Canon Canada is the sole responsibility of all members.

I did notice one thing when putting the tele con on the camera first: I lost center point expanded. This is on the 7D2 and I only installed it on the camera first a couple of times so don't hold me to this observation.ߘ

Im pretty sure if it made a difference to image quality it would be thrashed to death as to where and why and those who make there living using there camera would be quite adamant about it. i've never seen a image quality hit either way and Im sure thousands have not as well. DP I'm not special of that you can be sure ...when you call they will tell you 5 to 10 business days for return. On the second repair I'm sure they wanted to get to the bottom of it just as I did. so there on tuesday back on friday it was. there are thousands of people that never turn the camera off...you would think they would see a differents ?? kim I've never seen any ill affect regardless of how anyone around me has installed a extender, maybe if pins did not make contact ??

Good morning gschlact, as you know the near and super far seemed ok. I tested it before the return to cannon and after using a second 7DII and 100-400LII twice with and without canon 1.4III and with a second 1.4III ( I own two ) I tested both against each other and found mine to be very inferior, I then did a reset removing the batt closing the door and pressing the shutter button to remove any remaining power, reinstalled the batt and leaving all settings at default case 1, no modifications to any setting and compared the two cameras and lens shooting the same abject at the same time really with Identical settings page for page in the menu. settings on each camera were checked to be the exact same, both cameras had full batt's and they were found to be very comparable in image quality and sharpness, I can not say what or how this all came about, I can only tell you what I saw. I am a tech form the past but not of canon camera's so I under stand the apprehension on both sides. I guess thats why when I hear the words test I cringe, in the past for me that meant 10's of hundreds of waisted hour's knowing all the while a board was faulty and needed replacing. I would these days rather have some other tech have to grind through the hours of comparing data. my passion is in the wild life around me. ya I know I have to feed that to the site slowly as well. I may have to invite someone to come with me so they to can post the thousands of image they will get of the red fur. then I can sit back and laugh at the people poking fun at them for a while.

I think now at this point I need a trip back to my little friends and see just how things perform. as everyone knows the real answer is in the images you get in the field not shooting paper

Archibald I'm sure you do,

Jeff, when you cleared all camera settings, did you also clear all custom settings?

^^^ Jeff, if you did a reset, wouldn't that wipe out any prior MFA? If so, are you saying that it now performs better than it did when MFA were done?

I ask because (and I don't know if this is familarity breeding contempt) but I'm pretty sure that my fist impressions of this combo were more enthusiastic than they are now. Not that it is way off, but I just don't think that my images now, are as crisp as straight from the box.

I only MFA'd because I bought the mk111 extender and I noticed that the lens was off after that, but looking back, I also updated the software at the same time and "personalised" the cases. Although MFA corrected back focus with the extender, the images never seemed as crisp again, but now I'm beginning to wonder if it was the software update or something else that the camera just didn't take to. Don't get me wrong, I'm sure that focus is Ok it's just that I'm not "wowed" by the images (at 100%) with or without the extender, as I was when the lens was straight out the box and I'm not even sure if it's the lens or the camera.

CyberDyneSystems wrote in post #17760332
I believe the suggestion by Canon to mount the t-con to the lens first was all about physics and mechanical strength. That it has to do with preventing "butterfingers' and other physical gaffs,. Nothing to do with electrical signal or image quality or "weird stuff"

Since Canon also tells us to shut off the camera before switching lenses, regardless of the order you use, no power will be applied until all three (Lens, t-Con, Body) are all connected together.

I've definitely heard many say that attaching to the lens first is the "safer" option.
Until this thread I've never heard it suggested that it can somehow effect image quality.

Now that said, I understand that some SIGMA lenses can in fact get messed up if you do it the wrong way.. but again this requires you do it the "wrong way" while it's running and powered up OS.

I suspect it is you say Jake. Myself I have not followed any consistent method when handling TCs.

Turning off the camera before adding removing TCs or lenses IS good advice, but I often forget in the heat of the moment.

Never noticed a problem yet, doesn't mean it is safe though, so worth following just to eliminate it.

I second the idea of tufning the stabaliser off just to eliminate it, but I doubt it is the problem based on the history.

No Joe I just did a camera reset

Yes definitely Kim, I did try MFA before and yesterday and found nothing that was better than left along at zero. Do the reset....dont be afraid to mess anything up just do it

I agree Lester 100%, I never turned off IS and I'm not going to for the moment or today just to see what comes out of it. I know good photographer's that never turn off IS...tripod or no tripod

Pondrader wrote in post #17760245
I have seen this before and where it said to put it on the lans first, I can also tell you in the past I've had not problems doing it either way. but will put it on the lens first just to keep things straight. having the extender on or off made no difference to the images after the camera had this ill affect the afternoon that it went bad. so with or with out it was having problems. I was ok up close and ok at far out distances..like the moon. I did the reset then removed the batt and closed the door and pushed the shutter button to remove any power that may remain reinstalled the batt and turned the camera on. we then shot for both camera's comparing them as we went on the back of the camera. there was a big difference in the two before the reset and after not so much with one camera doing better than the other from shot to shot. so although I have used the extender both way s in the past this may have caused a problem but I am not 100% on that at all because I don't really know why the camera had an issue in the first place. the extender is speculation really or is it I don't know for sure.

I do wonder if there is anyone that has actually had a problem putting it on the camera first or is it just wording in the manual. ?? and I only had my extender on for a bit...noticed the problem and took it off, of course in this day and age I removed the batt to reboot as it were, these days theres not much that doesn't need rebooting once in a while.

From what I recall, Canon came out with these instructions when it introduced the new III version of the TCs. If you are referring to the older versions, then yes I agree I never had any problems either, but I follow their recommendations for the newer TCs.

CyberDyneSystems wrote in post #17760332
I believe the suggestion by Canon to mount the t-con to the lens first was all about physics and mechanical strength. That it has to do with preventing "butterfingers' and other physical gaffs,. Nothing to do with electrical signal or image quality or "weird stuff"

Since Canon also tells us to shut off the camera before switching lenses, regardless of the order you use, no power will be applied until all three (Lens, t-Con, Body) are all connected together.

I've definitely heard many say that attaching to the lens first is the "safer" option.
Until this thread I've never heard it suggested that it can somehow effect image quality.

Now that said, I understand that some SIGMA lenses can in fact get messed up if you do it the wrong way.. but again this requires you do it the "wrong way" while it's running and powered up OS.

I think it has more to do with possible faulty communication between lens and body, which in turn can cause problems with image quality.

Al why don't you bring your Hat ( most will not get that ) up to my place and we'll test it out lol, I had two wolves in my front yard the other day and the neighbour just told me they are in eating the apple's in his back yard,.......Bring your extender lol ...... what do you say....lol we will test the daylights out of your thieriy

Jeff, just give me the extender. Problem solved

Pondrader wrote in post #17761021
Al why don't you bring your Hat ( most will not get that ) up to my place and we'll test it out lol, I had two wolves in my front yard the other day and the neighbour just told me they are in eating the apple's in his back yard,.......Bring your extender lol ...... what do you say....lol we will test the daylights out of your thieriy

I wish I could. Your back and front yard is better than my nature preserves - haha!