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Capel Street
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Maybe not the type of street picture Eddie had in mind, but-
Still playing around with this 300mm 2.8-According to the tables,
Depth of field should be around 5m at 100m distance-
which seems about right…j
I’d love to understand the science of this jb but fear it may be beyond me … just about the weirdest focal ‘plane’ I’ve seen. Interesting thing here is that roof-banner on the first taxi is way out of focus, when it’s number plate is just a bit off.
I spotted that too Gary but as an image it completely fecks up your concept of depth…more like an optical illusion. The plane seems to be in control for the best part along the line of foot traffic. Another interesting one from JB.
I’d be concerned though..there looks like a “Community Servant” observing you…you would be terrorist ;-).
Alan.
Would be terrorist?
surely not with a home knitted lens…Thank you gentlemen for the comments and observations-
The subject plane extends from a point somewhere beneath my feet,
emerges from the road somewhere in front of that taxi,
bisects the building in the far distance,
and continues all the way to infinity-There’s a little bit of swing on it too;
looks like it’s tilted down to the right-One product of this setup, I think,
is that the lens doesn’t seem to be as long as it is-
you might expect long lenses to have large out of focus areas-
even if this were shot at f/22, focussed at 100m,
depth of field would be something like 42m-
a very small fraction of the length of the street-I’m very glad it’s messing with your perceptions-
but you’re photographers, and know how to question it-I wonder how it would look to someone who didn’t know about photography at all…
probably just some kind of mistake…Thanks again-
j
I wonder how it would look to someone who didn’t know about photography at all…
probably just some kind of mistake…You’d probably be laughed at for using the “old fashioned” camera and be introduced to the bargain Aldi 7 meggypixel camera that does video too and shown how clear next doors cat looks! :lol:
Alan
jb7 wrote:
The subject plane extends from a point somewhere beneath my feet,
emerges from the road somewhere in front of that taxi,
bisects the building in the far distance,
and continues all the way to infinity-…a marvellous example of the ‘turning focal plane’ ;)
Interesting as always Joseph, bizarre but interesting. As Alan said,
almost an optical illusion. Definitely ‘fecks up’ the concept of depth…Rob.
These are on a DSLR Alan-
though I take your point-
I do need something more professional looking-I was at a football match the other evening,
and forgot what I was holding for a moment-
the lens fell straight out of the camera, onto the grass-
very embarrassing…Cheers Rob-
remember- you heard it here first…So this isn’t a great picture either,
but it does tip my hand slightly
regarding how I might want to use this thing on the street-I’m going to need a ladder-
This one shows the depth of field on all those vertical elements in the picture-
you can see the extent of it, and it’s not very much- vertically-And yes Pete-
it is a bit too big-j
1st picture does nothing for me and it’s also “in focus this bit out of focus that bit” a bit too much, very confusing.
2nd picture is interesting though.The second photo has a sort of Lensbaby feel to it.
All in all a very interesting set of photos.
Thanks for the comments gentlemen-
Apologies if the focus is confusing,
I suppose a 300 2.8 wouldn’t be the lens of choice for an overall sharp picture containing any sort of depth-Dave, this is exactly the same, in principle, as a Lensbaby-
the focal length is different,
but it works in pretty much the same way…This was first time out on the street for this lens-
no more than a test that I find a little bit interesting-so I was testing its limitations-
and as I have mentioned earlier,
I’m going to need more height for the next ones-Thanks again for the comments-
j
jb7 wrote:
…
According to the tables,
Depth of field should be around 5m at 100m distance-jb7 where can I find a copy of these “tables” you mentioned?
Skittle
I use a widget for a mac dashboard, for convenience-
there are a few available,
but this is a good one-http://fuerstentum.net/DOFC_widget_en
However, there are lots of online calculators,
such as these ones-http://www.dofmaster.com/dofjs.html
http://www.silverlight.co.uk/resources/dof_calc.html
Thanks Aimee, cheers Ben-
Yes, some people have been violently ill as a result of looking at these ones-There’s more about the lens here-
https://www.photographyireland.net/viewtopic.php?t=19257
and here
https://www.photographyireland.net/viewtopic.php?t=19479
j
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