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If I recall correctly - I hope I got this right:Carsten,
I just wondered if the effect of a very fast wide angle wide open should be the same as a stitched from a longer lens? What do you think?
Tom
Hi Carsten,Ach, I forgot the vignetting again! Damn, I have to remember this. I will try adding it and see how it looks.
Tom, as Lars points out, some of the characteristics are similar between large format wide angles and small format stitched photos, but not all. The look of the lens remains per lens. I would love to use 8x10" digital with the Cooke that I think Lars has, but this is a pipe dream.
How is your S2 photography going?
Well... The Cooke XVa is a really nice lens for 8x10 (partly because of its convertible feature) but if you compare resolving power to a stitch of 25 frames from your Zeiss it probably wouldnt measure up - it comes down to MTF of lp/mm. 40 lp/mm is quite sufficient on 8x10 whereas on a 24x36 sensor it would be a bit soft even on a 12 Mpx sensor.I would love to use 8x10" digital with the Cooke that I think Lars has, but this is a pipe dream.
...Iasked about the fast WA with one image in my mind and just found it again (24/1.4 on M9)...but just, obviously the DOF is shallow but not as shallow and smooth as the one in the stitches you posted.
Very much agree! I spent about 3 hours experimenting with it last night actually, working out how many frames and what focal length I needed to give a 5X4 sensor real estate with the resolution of my 5D. Quick answer was use the same focal length you would use on a 5X4 but on the 35mm camera and stitch to cover the necessary FOV. In other words a 150mm lens to cover the 46 degree FOV provided by a 50mm lens on my DSLR. Ditto 90mm lens to cover the 65 degree FOV provided by a 28mm lens on a DSLR. Not actually a huge amount of frames, 25 will do it easily with room to spare.Oh I would say it's even slower - and it's not single-shot so it's even less useful for subjects that are not stationary.
Interesting to try if you don't have an LF rig though - and I think experimenting should be encouraged for those willing to make the effort.
Thank you Pierrard for your clear explanation.Focus stacking is for when you have an extremely small depth of field (especially in macro applications) and want to extend the depth of field by shooting multiple images focussed at various points along the subject. Software is then used to get all the in-focus areas onto a single layered shot.
In comparison, Boke(h) panoramas are panoramas in the sense of stitching images together to get a wider field of view than your lens at that focal length will give. The term boke(h) is used because the panoramas are done usually at a fast aperture, such that there are substantial out-of-focus regions (that is, there is a goodly amount of subject isolation).
The methodology is pretty simple: multiple overlapping images (like a standard digital panorama) which are stitched together in software, with a shallow depth of field due to fast aperture or longer focal length. The result is a larger field of view where the depth of field is substantially smaller than would be expected at that equivalent focal length.
Since large format cameras are very well known for this type of image, this methodology is a way of emulating the "look" of large format, using small format digital sensors.
Hope that clears things up!