Pulling focus with a fisheye

[kidwoo]

I've got what I believe to be a decent piece of glass (16 x 9 0.4 wideangle).


I thought the evf dtl function would be a no brainer but sometimes the outline is there, sometimes it's not.

I never zoom with the thing so I'm always full wide. Just going buy eye I sometimes get sharp focus, sometimes not, even with the exact same focus 'value'. I was under the assumption that you just find infinite focus and you're all good.

Any tips?

 

[dory_breaux]

Zoom in, focus, pull out. Thats the only tried and true way to get 100% focus all the time. Unless you can convert Z## to feet and measure it...

 

[William_Robinette]

Zoom in, focus, pull out. Thats the only tried and true way to get 100% focus all the time. Unless you can convert Z## to feet and measure it...

Only if your back focus is set right. On my DVX it isn't so this doesn't work, but otherwise this is a tried and true method.

But for a .4x fisheye I would think everything would be in focus all the time unless you are right up against the lens.

 

[kidwoo]

Zoom in, focus, pull out. Thats the only tried and true way to get 100% focus all the time. Unless you can convert Z## to feet and measure it...

Doesn't work. In fact every time I've tried to do this it gets worse. Not to mention the zoom on a 0.4 doesn't really do much, and then distorts at a certain point.

Works fine obviously without the extra glass but no so much with.

But for a .4x fisheye I would think everything would be in focus all the time unless you are right up against the lens.

That's what it would seem but I end up with things typically easier to focus on the closer they are. What I'm losing mostly is the distant stuff......which seems counterintuitive to me. Seems like I just need to find the infinite focus setting and leave it there.

I'm usually a long hike or bike ride into the woods where I shoot so dragging a monitor out there is a pain. I'm thinking I might just set it up at home, take note of where infinite seems to occur and then just use that setting all the time.

To be honest, I'm also kind of starting to wonder about the quality of the lens itself.

 

[dory_breaux]

Optically or just general product quality? Some of the shots Ive seen with it do seem a bit soft or artifact...

 

[kidwoo]

Optically or just general product quality? Some of the shots Ive seen with it do seem a bit soft or artifact...

Just the general quality of the lens.

Definitely more soft than artifact ridden. I spent 20 minutes trying to focus with it this past sunday.

I'll pull some screen captures when I get home.

 

[dory_breaux]

Check out the trailer for TGRs new Flick. Almsot all of the wide shots have a ton of artifacting. Granted, there work is always freekin legit but it did bug me.