Scoo Uploaded on February 22, 2009
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Keyword tags

panorama
experiment
85mm f/2 AIS
Nikon D700
bokeh panorama
depth of field panorama
DOF panorama
16:9

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  1. Taken on February 22th, 2009 at 06:14pm
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Kitchen experiment 


...and for once it's not about the trash bin gaining sentience and walking away :)

Having encountered the wedding photographer Ryan Brenizer (who blogs for amazon.com and has a stream at flickr that tends to pop up at the top of the interestingness hill over there) a couple of times on the net I've noticed his (do I dare say partly gimmicky?) technique of depth of field/bokeh panorama stitching. According to him he invented it (could be true, haven't seen it before him), he dubbed it "Ryan's strange lenses" and the "Brenizer technique" (his howto).

The idea is to take several exposures in order to get a composite image that had it been a single exposure would usually have had to be taken using an impossingly large aperture lens for any given focal length (haven't calculated this properly, ended up more wide than high too when stitched in PS CS3). The thing that enables this is really clever software such as Photoshop CS3 that can automatically import and align several images making a huge panorama).

At any rate, I thought of trying this out.

Composite of 13 shots taken wide open at f/2 using a 85mm lens, ended up cropping it at 16:9 as I didn't capture enough height-wise. I was going for something that would have the same field of view as a 35mm lens. Behind the scenes shot..

12 Comments / add your comment?

Michael B.pro says:
cool thing this. Hadn't encountered it before.
Ah, the lengths we'll go to to reduce depth of field... ;-)
Posted 10 months ago. ( permalink )
Scoopro replies:
Yep :) I suppose it can be done in any image processing program, there's just the amount of manual work versus automation to consider (during static lighting conditions and such I gather it would not be that hard to stitch together something, much more difficult to do so manually for a dynamic street scene or such).
Posted 10 months ago. ( permalink )
Siegfried Vogel says:
Wow - this got me now, dear Scoo!
I read the link you provided about this Brenizer technique, and I am hooked! This finally is a solution to some limitations in lens-making, as he explains in his amazon blog. What I really do not understand is how he is able to shoot 20 to 30 pics with a model, without any motion blur! Amazing!

I guess the kitchen shot of yours was much easier to achieve. BTW, did you switch off the autofocus? If not, every shot of the panorama would have a slightly different point of focus...
Posted 10 months ago. ( permalink )
Scoopro replies:
I suppose people have to stand/sit in a relaxed pose, moving traffic and pedestrians and such adds to the challenge. I gather that one of the benefits of the auto-merger function in PS CS3 is that it can subtract "odd" information from a frame when it adds it to the whole (some other examples I've seen have enabled the photographer to photograph a tourist attraction without scores of tourists getting in the way).

My static scene was at any rate quite simple to achieve. The lens was a manual focus one from the early 1980's (first I focussed on the cutlery holder and then I shot my sequence whilst trying to keep the camera in on point in space). Having the exposure and whitebalance locked would be a must, otherwise much headache and extra work would follow I guess.
Posted 10 months ago. ( permalink )
Scoo edited this comment 10 months ago.
Siegfried Vogel replies:
Very good. After the fake tilt-and-shift effect, this is another trick in the bag to get very narrow DOF. This is for static situations only, and you get double benefits if you need large resolution as for a placard or so.
Thanks again for the link to this technique!
Posted 10 months ago. ( permalink )
Siegfried Vogel replies:
A propos fake tilt-and-shift effect - I tagged that technique for you, Scoo.
Posted 10 months ago. ( permalink )
Scoopro replies:
Sorry?
Posted 10 months ago. ( permalink )
Siegfried Vogel replies:
It did not work, ok. Lets do it directly. Here is a link you might be interested in:
www.ipernity.com/blog/hyperbob/121794
Posted 10 months ago. ( permalink )
Scoopro replies:
Ipernity is sometimes a bit, well, 'quirky' when it comes to HTML (seemingly sometimes it works, sometimes it doesn't work and the entire code is deleted..). I remember seeing somewhere a tutorial for fake tilt-shifts that also suggested that one would turn up the saturation and mimic artificial lighting as to simulate that one really have photographed a model of something.
Posted 10 months ago. ( permalink )
Roomeripro says:
Mielenkiintoinen tekniikka. Täytyypä tutustua tarkemmin. Kiitti vinkistä.
Posted 10 months ago. ( permalink )
Scoopro replies:
Ole hyvä :)
Posted 10 months ago. ( permalink )
kommaasserpro says:
good info of your process, thanks johan!
Posted 9 months ago. ( permalink )

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