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Hi...I am trying to help a friend with a problem she is having.
She has a Nikon D7000 and 300mm F4 lens,and 1.4 TC.
She has only recently upgraded to this lens from a Sigma 150-500.(with I.S.)
She takes virtually 100 % wildlife subjects.
Instead of finding herself taking "better" and sharper images she appears to be going backwards.
Since having the Nikon lens which is a smaller F stop she has had trouble with the focus hunting and "locking" all the time.She thought it was down to the T.C. at first but it's the same without it as well.In the better light of late this is not happening so much but the lack of quality images is her worry.
She is a very capable photographer and normally has a brilliant "strike rate" with moving birds etc but now cannot get many at all.
Every one has tried helping as a lot of fellow wildlife togs have Nikons - but we cannot sort her out.
Yesterday she said she might have found out what is happening.....while holding the kit (not on tripod) she triggers the AF and and then just before taking the shot a split second later she felt the barrel move.....
Everyone looked at this and I was amazed to find that the lens has a switch for Manual and AF + manual....and not an AF on it's own. This is foreign to me as my Canon 7D is M/AF and the OLY ones I have are the same.
I cannot see why this is and what possible advantage it gives.
In the OLY you can activate the AF on the wheel and you get the options....
single AF
Continuous AF
Manual F
Single AF + M
Cont AF + M
If you want to change the mode it's as quick as the switch on the Nikon.
The Nikon (and Canon) do not have a menu in camera like OLY.
I have looked at her manual and cannot make head nor tail of all the AF modes so does anyone know what the problem is and how she can do something about it.
Not sure if her previous Sigma had this funny selection or just AF/M.
Thanks
Keith
p.s. the reason she is not asking you herself is that she does not really show images on line and prefers to just strive for quality for herself,so does not look at forums.
She has a Nikon D7000 and 300mm F4 lens,and 1.4 TC.
She has only recently upgraded to this lens from a Sigma 150-500.(with I.S.)
She takes virtually 100 % wildlife subjects.
Instead of finding herself taking "better" and sharper images she appears to be going backwards.
Since having the Nikon lens which is a smaller F stop she has had trouble with the focus hunting and "locking" all the time.She thought it was down to the T.C. at first but it's the same without it as well.In the better light of late this is not happening so much but the lack of quality images is her worry.
She is a very capable photographer and normally has a brilliant "strike rate" with moving birds etc but now cannot get many at all.
Every one has tried helping as a lot of fellow wildlife togs have Nikons - but we cannot sort her out.
Yesterday she said she might have found out what is happening.....while holding the kit (not on tripod) she triggers the AF and and then just before taking the shot a split second later she felt the barrel move.....
Everyone looked at this and I was amazed to find that the lens has a switch for Manual and AF + manual....and not an AF on it's own. This is foreign to me as my Canon 7D is M/AF and the OLY ones I have are the same.
I cannot see why this is and what possible advantage it gives.
In the OLY you can activate the AF on the wheel and you get the options....
single AF
Continuous AF
Manual F
Single AF + M
Cont AF + M
If you want to change the mode it's as quick as the switch on the Nikon.
The Nikon (and Canon) do not have a menu in camera like OLY.
I have looked at her manual and cannot make head nor tail of all the AF modes so does anyone know what the problem is and how she can do something about it.
Not sure if her previous Sigma had this funny selection or just AF/M.
Thanks
Keith
p.s. the reason she is not asking you herself is that she does not really show images on line and prefers to just strive for quality for herself,so does not look at forums.
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