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Dave, other than the weight is there a reason that you prefer the 100-400? 100 vs 180? S vs. non S? I think we are all waiting on a comparison of image quality. Did you compare the image quality between the two? I also have a 800pf and a 500pf and am trying to decide which of the zooms to purchase.As an owner of the 100-400 and having tested the 180-600, the latter certainly won't be a replacement for me. It is a great single lens to carry but I prefer to use the 100-400, 800pf combination, with 500pf when required. The 180-600 feels a good deal heavier than the 100-400. Just a personal thing
Very true, although a little beyond the scope of the video since it's usually a bit of a specific use thing (i.e, more close-range targets). Still, it can come into play, although if the subject remains the same size in the viewfinder, the DoF will still stay the same (of course FoV and magnification change). I wonder if there would be enough interest in a dedicated focus breathing video???
Nice Steve perry confirm DOF remains virtually unchanged in practice when subjetcs are the same size in frame with different focal lens and same aperture.
I will have a very reliable source to show now when I tell this and people show their dof calculators to try to prove it is wrong.
Arrgh. This is tru.
I even made the same test as steve (with only 2 focal lens). Results were conclusive but people (good photographers anyway) were still trying to prove it is wrong.
And that's what's taught in the prestigious film schools I know (that it is tru).
If you're shooting a 14mm lens at f/2.8 you'll get some background blur if your subject is closer than roughly 6 feet from your camera. If you're shooting at f/4 your subject would have to be closer than roughly 2.5 feet to get any background blur.If I’m shooting at 14mm will I get out of focus blur?
If he maintained the same subject size (the same LensAlign target size per the testing in the video) then yes the DoF would remain the same.Correct,
I was referring to Steve’s video. If he would add the same shot at 14mm /5.6 the DOF would be more?
It makes no difference.I’m still stuck in the compression element. Does the longer lens / magnification literally alter the image? Or its all an illusion?
Imagine a row of trees one behind the other with a 30 feet space between them. When captured at 300mm, it compresses and take away the space, when looking at the 300mm shot, it appears like the space is only 10 feet or so.
With your example, the longer focal length literally raised the test chart from horizontal to vertical.