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leping

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  1. From the photographer: The sunrise of November 4, 2001

    in Huangshan Mountains looked exactly this

    colorful, with a lot of reds and yellows and magentas on the top, and cool lights down the

    valley. I did not use filters to add color, and

    there was no color added in Photoshop in which I

    did a global color correction to remove the

    blueness in the shadows by making the clouds puring into the valley neutral (plus some moderate burnings and doggings on a Softlight layer).

    The color correction did fuether warm up the top to render it look maybe "artificial", but all the colors and the whole composition were natural and is on the original film - Velvia is famed to pick these warm tones. Perhaps I should have kept some of the shadow blueless to reduce such effects. It was a very special and spectacular sunrise. I shoot 16 rolls in a two hours window, including several all similar to this. The other images from the same session include the #8 and the #12 (the last one) of this portfolio; and the #4 of the portfolio "Huangshan Mountains II". Together they document the development of colors that very morning, from red-magenta before and at sunrise to yellows, whites, and blues after.

  2. I am very touched that this picture has been

    viewed more than 64,000 times since it was

    selected as the POW, and the number of members

    who take time to leave comments. When I first

    put my portfolios on photo.net I only thought

    it a quick way to share the images with my

    teachers and friends. Never dreamed it to

    reach 60k+ viewers, although I understand there

    are many counts from repeated visitors.

     

    I really love fall colors. The first school for

    my graduate work in the States was UM-Duluth (in

    the mid-80s), where the autumn is simply

    fantastic. I finally finished my schools in

    Pittsburgh and came to work in the San Francisco

    Bay area in 1995, picked up the old photography

    hobby two years later, when I was barely afford

    to, the first time in my life. I did some B+W

    works back when I was young. I went to New

    England and Adirondacks of New York three times,

    came back almost empty handed after endless

    fights with traffic jams, tourists, babwires and

    fences, phone and power lines and poles, and

    private land and no trespassing signs. The

    fences do make nice foreground and the white

    churches are gorgeous against the color, but for

    some reason I found it is not to my idea since

    I want something more than the travel shots

    and try to avoid man made objects in general.

     

    Then I signed up a week long fall color

    workshop with John and Barbara Gerlaches near

    the Pictured Rocks National Lakeshore in early

    October last year, which turned out to be my

    most productive week. John and Barbara are

    the finest instructors and the nicest people

    one can ever meet in this world, with

    complete knowledge of the region after living

    there for many many (15+?) years. The

    workshop that they offer every Fall is very

    sensibly priced as well, which is a factor to

    me at least. It even had a totally

    unexpected guest to join the group, whose

    name is John Show. We met many other pros in

    the area, most of them share the same

    experiences I had had in New England, and

    believed the mid-north locations are better

    for photographers. Here in upper peninsula

    of Michigan almost all the lands and lakes

    are part of the National Forest, and the

    peak color of the year knocked every one's

    sock off to say the very least, which lasted

    for more than a week. A real photographer's

    heaven where for the first time I run out my

    film, about 70 120 rolls plus some 35mm.

    Usually I carry twice as much as I thought I

    may need. It may be true that the scene

    like this is everywhere all over Canada at

    the season, but I do not live in Canada

    so that naturally I was over excited by the

    nature's giving in Michigan.

     

    Technically, it was a easy straight shot,

    since the overcast weather condition. My

    better shots of the trip were mostly from

    my return visits to the places the group went

    to in the week AFTER the workshop, since by

    then I know where to return to. Also the

    weather cooperated: it was mostly sunny

    during the week, but turned to cloudy and

    eventually snowed later that wiped out most

    of the remaining leaves. The shot was taken

    in the same birch and maple forest up on a

    small hill where I also shot the D67-272,

    "Fern and Maple in a Birch Forest", at

    around 4:30pm, in the lucky late Saturday

    afternoon when there was basically no

    wind! With 6x7 medium format I loose two

    stops of DOF in comparison to 35mm, so I

    had to stop down the 135mm macro lens all

    way to f/32, which is merely equivalent to

    f/16 in 35mm. To me I need to keep

    everything sharp for this kind of close ups.

    The 81B warming filter was necessary in

    such overcast days, and actually not quite

    enough. The chrome still look too blue on

    my light table, which is corrected with a

    curve adjustment layer in Photoshop. A

    81EF might be just right. The exposure

    came naturally and easily from the

    diffused lighting, metered with the Pentax

    67II's AE prism in the matrix mode, with

    the Velvia rated at ASA 40. I bracketed at

    0.7, 1 and 1.5 seconds (Pentax can modify

    the 67II to do half-stop speeds) since

    Velvia is such a "nonlinear" film for

    which a third exposure change makes a

    lot differences that is not predictable,

    even in such low contrast situations.

    If I see something good through the view

    finder I do not want to take the chance

    of a single shot. Films is cheap but

    time and travel are not as they often say.

     

    If I were returning to the scene today I

    would have packed more Provia than Velvia,

    since I learned that the Velvia saturates

    on red too early. David Muench shoots only

    Velvia but many of his red rock country

    pictures can be better if he were with

    the E100VS, which shows considerably more

    shades of details of reds and oranges

    typical in his pictures. However, as

    many pros found overall the Kodak has a

    hot or unsettle tendency while Fuji tend

    to put peace to the viewer's mind, even

    under the loupe the details are almost

    identical. The E100VS just can't convey

    the tranquil and subtle refined feeling

    the Fuji and the Japanese arts are good

    at for these kind of forest shots, unless

    we want to build tension of some sort.

    On the transparency of this shot the

    colors are really saturated and I think

    I lose some details of subtle variations

    of the red on the maple leaves. I

    partially corrected that in Photoshop

    with a level adjustment layer for the

    selected reds. And the reason that for

    many the image's color look muted is

    from the fact that I further reduced

    the color saturation before I converted

    the image to the sRGB color space for

    the web use. The S/H slider was at

    -45 as I can remember. If I do not do

    so all the reds would be pure and solid

    on the web. I believe with a properly

    calibrated monitor the color saturation

    of the posted version is about right to

    my eyes, beyond which I start to loose

    details in saturated region. On a 20x24

    enlargement of the shot I can see veins

    of the leaves from 4 inches away.

     

    As many found I am a perfectionist in

    nature on the technical side, maybe also

    partially from my training in science

    (Physics). Many people tried the Pentax

    67, and give up, saying that the images

    are not sharp. I found it were true if

    I used a lesser tripod, say, a Bogen

    3021 which I did try. The shutter shock

    problem of the P67 demands heavier

    support, even with the mirror locked up.

    The P67 is by some means a handicapped

    system on which I can't fire at shutter

    speed at 1/8 and 15/1, and for which I

    found the Grizo 1548 absolutely

    necessary even it costs a fortune that

    offset the cost of the very cheap MF

    system otherwise. However counting in

    the $1k for the 1548 the system is

    still inexpensive, and cheaper than

    many of my friends 35mm outfits.

    I also use a short aluminum center

    column with the setup, on which I

    drilled three holes across so that I

    can stick through a philips screw

    driver which I always carry, to hung

    my 25lb (at least) backpack to further

    weight down the tripod, as I found

    nothing substitutes the physical weight

    in damping out the P67 shutter vibration,

    although the carbon fiber (or wood) legs

    do absorb the vibrations much better

    than the metal ones. I am a really a

    sucker for image sharpness, since why

    take the troubles to shot the MF

    otherwise? I pick my keepers, both

    the frames and the lenses, with a 22x

    loupe, so that I can enlarge my 6x7cm

    chromes to 24x30 digitally still with

    details to be unveiled from inches away!

    Many viewers thought the prints are from

    4x5 originals, but after rented 4x5s

    several times I found they conflict with

    my available time since I have to keep

    my full time job, as well as with my

    limited budget. I think so far I have

    found the right balance for my kinds of

    photography with the Pentax 67 system.

     

    I would also like to talk a bit on the

    P67 lenses. I found considerate degrees

    of variations of sharpness versus aperture

    settings on different samples of the same

    lens, with a tendency that the old ones

    manufactured 10-20 years ago better than

    the newly made, no matter how beat up

    looking of the exteriors. This certainly

    makes the eBay my heaven. I test each of

    my acquisitions carefully with resolution

    chart, and pick keepers, some of them

    seems to perform against the known physics

    laws of diffraction. This 135mm for this

    shot is an example, as for some reason it

    keeps almost all of its sharpness of f/11

    at f/22, and degrades very little at f/32.

    This is not the case with the other two

    samples I have tested.

     

    I almost always stop down all the way, or

    to at least a stop more than the DOF scales

    tell, since the DOF is the primary problem

    of my MF efforts. I found that the

    softness from diffractions can be very

    effectively corrected by the unsharpen mask

    filter in Photoshop, while the out of focus

    elements will be always out of focus. In

    my collection of P67 lenses, the 55mm f/4

    is the other that keeps to be razor

    sharpness all way down to its minimum f/22,

    with both of the two samples I have had.

    They are the sharpest lens I have ever seen

    at all apertures from f/8 down. The same

    is not true for my 45mm, 75mm, 90mm, and

    105mm, all of them lose definition when

    stopped down to the minimums. Recently I

    added a 55-100mm zoom to my bag, after

    inspected my friend's chromes shot with the

    zoom, which closes down to f/32 at all the

    focus lengths. Surprisingly I found the

    zoom performs on the same level or even

    better than my primes center to edge, with

    minimal distortions and flares, and is

    very sharp at f/32. This give me room to

    modify my 55mm/f4: I took the rear sections

    apart, and inserted spacers to make it to

    have a built in (fixed) down tilt of about

    one degree. This have been my lens for

    near-far shot, since without the help from

    the little tilt I could never really get

    enough DOF even from the wide angle for

    the 6x7 format at it minimum f/22, which

    converts to a 28mm at f/11 in 35mm format.

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