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Forum: Pentax SLR Lens Discussion
05-22-2014, 10:48 AM
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Geez, Norm, how long did you mull that one over. ;)
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Forum: Pentax SLR Lens Discussion
05-06-2014, 09:55 AM
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That picture of mine with the shallow DOF was taken at f2.8, 1/30th second, ISO400 film with natural light. Do you see any room with that ISO to get more DOF? Any slower of a shutter speed and motion blur is a risk. And there was only f2.4 available on the lens. And that was with a 105mm lens ( approx equal to 35mm on APS-C).
Now imagine shooting the same scene with a 360mm lens under the same conditions on an 8x10 and close to the same working distance. You'd have razor thin DOF under that light level. So developing photographic styles working around and with shallow DOF under ambient conditions is born out of necessity with larger formats. Sometimes people shooting APS-C tend to forget that since they can easily achieve lots of DOF under ambient light with a 35mm lens with lots of ISO choices.
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Forum: Pentax SLR Lens Discussion
05-05-2014, 03:52 PM
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Yes, Norm, I have a 4x5 and I post in a large format photography forum. I have owned a 4x5 for about 20 years and shoot it now and then and certainly not as much as medium format. Since I never seen you post any of your film shots, I can only guess you don't shoot it much if at all except maybe for some class you took?
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Forum: Pentax SLR Lens Discussion
05-05-2014, 09:37 AM
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How do you arrive at that conclusion? The choice to turn a dial or rotate an aperture ring is not being lazy. If EVERYONE is getting full DOF in the face than one could argue that is a cliche', no? Over on the large format forum if you use shallow DOF they say, nice. Here, in small format land it is YUCK!
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Forum: Pentax SLR Lens Discussion
05-04-2014, 05:40 PM
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Shallow DOF in portraiture has also been around since the beginning and is popular among large format shooters. And it is fun to try and do it on a medium format Pentax 6x7 as shown here. I, for one, say it's a pretty cool technique and certainly one you do not see everyday, IMHO.
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Forum: Pentax SLR Lens Discussion
05-02-2014, 08:38 PM
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I gotta say you are thinking wrong. Selective focus has be around since, well, forever. And it is a very effective photographic tool. I don't mean to pick on member osv's picture here but it demonstrates that some lenses can't handle complex structure in their out of focus rendering very well IMHO. And it can totally be a distraction. Check out the cactus flower background.
https://www.pentaxforums.com/forums/76-non-pentax-cameras-canon-nikon-etc/110...ml#post2782319 |
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Forum: Pentax SLR Lens Discussion
05-02-2014, 04:26 PM
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When lenses are really close in terms of sharpness, how a lens renders it's out of focus can decide which is better. There are no bokeh examples here.
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Forum: Pentax SLR Lens Discussion
05-02-2014, 09:55 AM
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This plastic lens in a Holga looks way better scaled down than full size in terms of sharpness.
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Forum: Pentax SLR Lens Discussion
05-02-2014, 09:39 AM
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Tiny web displays of a full image is about the worst scenario for judging the quality of a lens, no?
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