tomascastelazo
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Posts posted by tomascastelazo
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<p>Thanks Tom!</p>
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<p>As talented as Mr. Cadden may be, he sure has no regards for copyrights. He took one of my photographs, located here <a href="../photo/7169868">http://www.photo.net/photo/7169868</a>, copies it, as is passing it on as his own creation infringing on my copyrights. Here is the comparative: <img src=" alt="" /> <a href=" >http://www.flickr.com/photos/tomascastelazo/7166352094/in/photostream</a></p>
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<p>I got my first Koni about a 2 months ago... I now have a Rapid M and an M, plus the 60, 90 and 180 lenses.<br>
Shot my first test roll and loved it... Tomorrow I am taking it out for a long early morning walk.<br>
I have a full RB system, which I love, but the handiness of this system is great.</p>
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JC Uknz,
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Thanks for your reply.
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I appreciate the link! One of those jewels hard to fnd on the net!
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Now, I embrace ditital media, but what can I say? I like toys! Also, I have a bunch of really great lenses and I think it is a shame to let them collect dust, etc.
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Yesterday I ran a home-test of my canon lenses vs the Zeiss planar and just visually on the camera screen, it beats the canons hands down. Much better contrast and sharpness, really evident.
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The 135 Takumar was also a bit better than the canons.
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I will run a series of comparison tests soon and hope to post them here for everyone?s benefit.
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Kari
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Basically I am interested in knowing/comparing sharpness, color rendition, contrast, etc. and experiences of people who have used both lenses. I am just getting into it. So far with the lenses that have, I am happy with results, but I don?t know if it is the novelty of it, or there are true benefits of using those great old lenses on digital bodies.
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For example, the Zeiss Planar 50mm gives me a very sharp, creamy feel, different colors than my 28-135 IS, for example.
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The link that Rainer provided answered a lot of questions that I had, my remainng doubt is about the chromatic aberration attributed to analog lenses, about light not falling perpendicular to the lens, uneveness of exposure due to the supposed angle of incidence, etc. I want to know if these arguments are true, and if so, what focal lengths are more prone to the aberrations or create uneven exposure, etc.
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Tomas
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Thanks Rainer! definitely a great answer! Now I have to find out about the quality.
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Regards,
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Tomas
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Ok folks, it turns out that my "new" interest is on using what has become known
as "analog" lenses.
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I've read a bunch of things about both lenses being different. And here is where I
need help from
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a) knowledgeable people technically speaking, without a lot of story to the
answers and
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b) knowleadgable people practically speaking without a lot of story to the answers.
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So the questions are:
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1. How true it is what is said about "digital lenses" focusing on the sensor in a
much perpendicular manner as opposed to "analog lenses" having a light
incidence of greater degree and thus affecting image quality?
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2. With the smaller chip, due to the circle of coverage, the "analog lenses"
become a relatively longer lens in digital cameras (I accept and understand this),
however, what happens to the Depth of Field? A wide angle has ample DOF, at full
use of image circle. When the usable area is reduced, to an equivalent, lets say,
of a 50mm (35mm analog converts to 52mm aprox in digital), does the ample DOF
characteristics are retained despite the fact that the effective area of coverage is
that of a longer lens? Another example... an 80mm lens in analog photography
has nice bokeh, different than what a 50mm lens would yield, but when I use a
50mm lens in a digital camera and it turns in effect into an 80mm equivalent, will I
get the same bokeh?
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3. I have bought from ebay a series of Takummars screw mount to use on my
canon 20d. They are a 35mmm f2.5, a 105 2.5, a 135 3.5. I also have two Tamrons
SPs, a plastic fantastic 100mm vivitar macro, a Zeiss planar t, 50mm 1.4. Has
anybody has an experience using these lenses on digital cameras?
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I already have some in my possession, and they definitely render something
different than the canon lenses I have. But since I do not have the equivalent in
canon lenses, I cannot compare.
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Can anyone share some real life experiences with these lenses?
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Thanks!
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Tomas
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Thanks Kevin, I am using an RB67... have the 180 and 250 lenses... wanted to avoid the 360.... I paid 62 bucks... so at least it will be a 62 bucks experiment...
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Does anyone have the Kenko 2x teleplus? I?d like to hear from personal
experiences as far as results of using this teleconverter. Thank you!
Canon G1X raw and Photoshop CS4
in Mirrorless Digital Cameras
Posted