I've been gathering a few, and then taking photo's with them. Generally, I'm pretty disappointed with the image , as the focus on all of the seems to be a little off.
I then found out about the Auto Focus Fine Tune, and over the last hour and a half have been fiddling around with al my and some text on a 45 degree angle and some of the kids figurines set up at slightly different depths.
My conclusion is thus.
I've been far too far away from the subject for the I have. That, and you need good for tight focus. With 's over 800 my camera (d7200) struggles. If the subject doesn't take up a good deal of space in the view finder, I'm not going to get a image.
I took a few of the kids outside in good and the I tried were (not tack , razor , knife edge etc). I was only a few metres from them, and they were still and co-operative.
I tried the 55-300 on some Twenty Eight parrots which were only 7-10 metres from me, and the images stunk. I was leaning on a wall to stabilise myself, the was average, and the images were very soft.
So what's the outcome? For me, it's to take photo's within my distance means. Landscapes are one thing, but kids, pets, cakes, drawings etc all need to be within 4m.
Luckily learning is enjoyable... I just hope I learn more of the straight forward stuff early on.