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Forum: Photo Critique 09-19-2021, 06:33 PM  
Black & White The Waterfalls at Versalles, Guaduas, Colombia +ND6
Posted By Peter Rockstroh
Replies: 5
Views: 447
Thanks for you comment. I posted this image as a comparison to a straight image of the waterfalls, without a ND filter.
It s not a B&W print, just an inversion of a digital image of a Pyro negative, compāring two images, with and without ND filter.
Pyro negs print with great contrast, but their digital inversions don't show the contrast of their silver prints
Forum: Photo Critique 09-17-2021, 10:39 AM  
Nature What Kind of Blue Flower?
Posted By Peter Rockstroh
Replies: 12
Views: 722
I like the way you cropped the image. The intense blue Commelina is balanced by the two leaves.
Although she seems to be "looking" to te right, there is no movement in the picture hinting towards
the right side. I really like te saturation of this image.
Forum: Photo Critique 09-15-2021, 02:20 PM  
Still Life The original kit
Posted By Peter Rockstroh
Replies: 6
Views: 374
I think the image is missing a purpose that guides the setup. It looks as if you are deciding how to display your gear to sell it. For a still life it needs props, for a catalogue shot it needs light.
You could toy with a half packed photo bag, some books and a map. If it is not for sales you don’t need to put everything in the image.
Forum: Photo Critique 09-14-2021, 05:59 AM  
Black & White The Waterfalls at Versalles, Guaduas, Colombia +ND6
Posted By Peter Rockstroh
Replies: 5
Views: 447
Thanks Angky. I think that the well-defined contours of water in this image
make a more obvious statement ! What iimpressed me the most of this
image was its edge to edge clarity, which was totally unexpected coming
from a US$ 15.00 Filter
Forum: Photo Critique 09-12-2021, 04:55 PM  
Black & White The Waterfalls at Versalles, Guaduas, Colombia +ND6
Posted By Peter Rockstroh
Replies: 5
Views: 447
Pentax 67 II. 200 mm
HP5 @ ASA 250 in Pyro PMK

The waterfalls at Guaduas are a group of mid-sized falls
in tropical lowland forest. Although I'm not a big fan of ND
filters for water, I took a few images with a ND+6 Filter and
this time I believe it worked for the picture.
The bright white ribbons of water show a much better contrast
than my previous images, taken to display the true character of
this river.
Forum: Photo Critique 08-28-2021, 07:53 AM  
Black & White The Waterfalls at Versalles, Guaduas, Colombia
Posted By Peter Rockstroh
Replies: 5
Views: 786
I do that too, though less and less. Unless I'm looking for specific plants or animals, I photograph mainly in areas that have an easier access.
Age and health become a burden that weighs more than the gear I'm usually schlepping with me.
Forum: Photo Critique 08-26-2021, 06:48 AM  
Black & White The Waterfalls at Versalles, Guaduas, Colombia
Posted By Peter Rockstroh
Replies: 5
Views: 786
Thank you. First, I follow Edward Westonīs principle: "If its more than 500 yards from the car, its not photogenic". Second, I spend more time in Colombia photographing in the cold highlands than in the warmer areas; and third, I do most of my medium and large format work before 9:00 and after 4:00 P.M.
Forum: Photo Critique 08-25-2021, 03:24 PM  
Black & White The Waterfalls at Versalles, Guaduas, Colombia
Posted By Peter Rockstroh
Replies: 5
Views: 786
The Waterfall at Versalles, Guaduas
Pentax 67II. 200 mm
HP5 @ ISO 250 in Pyro PMK
Negative photographed and inverted in PS
Forum: Photo Critique 08-16-2021, 01:44 PM  
Black & White Early morning, Pacoxom, Guatemala
Posted By Peter Rockstroh
Replies: 0
Views: 288
Early morning, Pacoxom, Guatemala
Pentax 67 II, 55 mm
Tri-X @ ASA 160 in HC-110
Oriental Seagull G3. Selenium toned
Forum: Monthly Photo Contests 08-16-2021, 09:58 AM  
Poll: Expired Contest Poll VOTE NOW - Photo Contest #179 Poll (Spiders - July 2021)
Posted By Peter Rockstroh
Replies: 27
Views: 3,013
Technically they are all top notch; aesthetically they are also very polished.
If I have to pick one that goes beyond a great portrait of a spider, I pick
#7. Technically impeccable, great composition and the colors set the mood
for a scenario that is as creepy as most people perceive spiders
Forum: Photo Critique 08-13-2021, 11:17 AM  
Black & White Dawn, Cloud Forest, Sierra de las Minas, Guatemala
Posted By Peter Rockstroh
Replies: 4
Views: 385
Thank you, I appreciate your comments.
This photo was taken and printed during my first incursions into the Zone System.
I wanted a dramatic image that would capture the mood of the place and moment
(which I'm quite happy with). I placed the shadows in Zone II (one stop lower than
my usual placment), because I wanted to retain the maximal shadow detail, but
still show detail and texture in the fog.
And I did.
I enjoyed printing quite dark in those days, so I always remember the comment
of a friend, who said: Photography is painting with light, not with shadows.
He was right. Iīve re-printed many of my photos and today they look much better,
lighter and more luminous.

This is an image that needs a second chance to shine. I will print it with a
better lit midrange and detail in the shadows, and see if it really improves
Forum: Photo Critique 08-12-2021, 04:29 PM  
Black & White Dawn, Cloud Forest, Sierra de las Minas, Guatemala
Posted By Peter Rockstroh
Replies: 4
Views: 385
Dawn, Cloud Forest
Tri-X Pan @ ASA 160 in HC-110
Brilliant G3 selenium toned
Forum: Photo Critique 08-10-2021, 06:54 AM  
Black & White Greenīs Baobab
Posted By Peter Rockstroh
Replies: 9
Views: 515
I believe the second image shows what a creature this tree can be, while the first image
is just a tree. A big tree, but showing very little of its personality.
Forum: Photo Critique 08-09-2021, 04:16 PM  
Black & White Greenīs Baobab
Posted By Peter Rockstroh
Replies: 9
Views: 515
Attached is an image of the full tree(s).
The San Bushmen have a story about the Baobab. According to them, in the distant past the Baobab
complained to God that it didnīt have beautiful foliage, or delicious fruit or gorgeous flowers.
It complained for such a long time that God pulled the tree out and threw it back, upside down,
so he wouldn't hear it complaining again.
Forum: Photo Critique 08-09-2021, 06:32 AM  
Black & White Greenīs Baobab
Posted By Peter Rockstroh
Replies: 9
Views: 515
Thanks. This is one of the Millenial trees, estimated to be around 3,500 years old. Each of these three trees is about 6 meters wide at the base of the trunk.
Forum: Photo Critique 08-08-2021, 11:05 AM  
Black & White Greenīs Baobab
Posted By Peter Rockstroh
Replies: 9
Views: 515
Greenīs Baobab
Northern Kalahari, Botswana
Pentax 67 II
45 mm
HP5 @ ASA 250 in HC-110
Galerie FB G3 Selenium-toned
Forum: Photo Critique 08-07-2021, 06:18 PM  
Cityscape St Marco Sunrise - Venice
Posted By Peter Rockstroh
Replies: 9
Views: 403
I remember when I was young and hairy reading an article about triple exposure of RBG on slide film. Exposure was measured and divided by three, snd each third exposed through each, a blue, red abd green filter. When by coincidence your exposures were about right, everything that hadn’t moved showed nearly normal colors. Water, foliage and people were composed of RBG blotches. That sounds like something you would (and could) figure out. It should be much easier (and cheaper) than slide film in digital.
Forum: Photo Critique 08-07-2021, 03:14 PM  
Cityscape St Marco Sunrise - Venice
Posted By Peter Rockstroh
Replies: 9
Views: 403
You must really take long vacations for such exposures. You really nailed the exposure. How do you balance the exposure between takes ? All in all your shutter spent at least 6 min open during the fastest changes of light conditions of the the day ?
Forum: Photo Critique 08-05-2021, 07:07 PM  
Abstract Yam Vine In A Lady's Window
Posted By Peter Rockstroh
Replies: 5
Views: 315
Our eyes are not able to distinguish the same amount of discreet shades of all colors. We can tell apart about 35-40 shades of Green and blue, from the lightest to the darkest, while on yellows and browns the scale is much shorter. B&W allows us to distinguish over 75 shades between white and black (in a silver print).The medium and its tonal scale are more flexible and forgiving. It is more difficult to make an image with a rich tonal scale in color. So if you choose color, green should be the best choice.
Forum: Photo Critique 08-05-2021, 05:01 PM  
Abstract Yam Vine In A Lady's Window
Posted By Peter Rockstroh
Replies: 5
Views: 315
The juxtaposition of new growth and old is a very interesting way to take plant portraits There’s not only size differences, but also beautiful differences in the luminosity of new tissue and old. Young leaves are translucent and conduct light like fiber optics. That makes a great contrast when taken against the out of focud silhouette of old leaves. You did a great job here. If you want to see a monochrome version of this concept, I posted a B&W example some time ago titled Tectaria.
Forum: Photo Critique 08-05-2021, 04:22 PM  
Black & White Espelettia
Posted By Peter Rockstroh
Replies: 7
Views: 496
Thank you for your comments. I enjoy very much getting lost in prints with lots of detail.
I printed this image during a B&W Course I was teaching here in Bogota. One of the
kids looked at the print and asked how I did the "sharpening effect" with film.
There's gotta be a button or link that solves everything.
Forum: Photo Critique 08-04-2021, 02:17 PM  
Travel Venice old clock square
Posted By Peter Rockstroh
Replies: 11
Views: 493
Beautiful !! Great job. Yes, if you don’t want to miss Magic Hour (locally around 6:07),you better get up early. Even then you’ll be pressured to know your exposure controls, because you have limited time to ruin your shot completely
Forum: Photo Critique 08-01-2021, 06:15 PM  
Nature Dandelion Fluff
Posted By Peter Rockstroh
Replies: 12
Views: 918
I understand what you are saying, and perhaps I have found one of the reasons
why some images are much more popular than others of the same subject.
This image, like a few other photos every photographer remembers, allows us
to identify what it is, yet also lets us interpret the image as something else.
I believe painters call that interpretative abstract. In photography it can be
a hyperrealistic image of something that is very obvious, and yet looking at it
it can represent something else, often more powerful.
And we like to come back to enjoy how our mind tricks our vision.
Forum: Winners' Showcase 08-01-2021, 02:59 PM  
June, 2021 Winner: Torre del Mangia - Siena-Italy
Posted By Peter Rockstroh
Replies: 68
Views: 2,018
Congratulations ViJay. I don't kno!w what and how you did it, but the result is an amazing visual tunnel that sucks you in an spits you out
when you finally realize what youīve been looking at. Definitely a keeper fo the wall !
Forum: Photo Critique 07-31-2021, 06:30 PM  
Black & White Cycad
Posted By Peter Rockstroh
Replies: 4
Views: 772
This is one of a series of many rolls taken at this BG. I believe it is the third image of this/these cycads I show at this forum. Each one has something that called my attention. In this image I was attracted by the light filtered through the leaves. Your comments are correct, it does improve cropping 20% of the edges and leaving the almost abstract center portion.
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