Tag Archives: Delta 100

Scrutinizing Sharpness (Ian Andvaag A33)

by Ian Andvaag
For this loop, I wanted to get some feedback on sharpness. I’ve been working through some of Mike Davis’ spreadsheets and trying to determine if I’m leaving a meaningful amount of sharpness on the table by using a TL-120 or Sputnik. As I understand it, Mike’s contention is that it is not possible to get critically sharp slides with appreciable depth using standard 60-65 mm stereo base and normal FL lenses. I’m rather surprised by this contention after having seen many fantastic slides taken with TL-120s and Sputniks, but I know it’s easy for one’s eyes to be fooled, and I would guess that 95% sharpness looks close to 100% sharpness. I will say that I was particularly struck by David Lee’s Yosemite Fall slide that was included by John Thurston this loop, which seems impossibly sharp, and was not taken with a standard stereo base. I believe the proper way to investigate sharpness would be to shoot some scenes with resolution test charts at various distances and then to side by side A/B comparisons with the resulting slides in a viewer. I wish I could ask Don for advice, I know he occasionally did tests like this 🙁

 

With all this in mind, I picked out several slides which I personally believe to be quite sharp, and I would appreciate any feedback from others about any perceived lack of sharpness. Cloud Inversion should probably be considered as the “base case”. I believe the nears were around 50′ and I focused around that point, shooting at f/16 I believe. I believe this should secure more sharpness than the eye is capable of detecting in a standard viewer. I don’t really know anything about a cloud inversion, maybe this should better be called thick fog that settled into the valley.  Anyway, it was rather unexpected and interesting to see when I woke up to photograph at sunrise. There is a bit of retinal rivalry in the clouds and shadows as this is a chacha with a tripod and it takes some time to set up the tripod and adjust the framing. Apparently quite a few dinosaur fossils have been found in these badlands.

Cloud Inversion

 

I perceive Gem Lake Reflection to have a high degree of sharpness, however I don’t think it is objectively sharper than any of my other standard TL-120 slides. I believe the perceived sharpness is largely due to the adjacency effects caused by the high acutance first developer, along with the fairly visible grain.

Gem Lake Reflection

 

Bryce Hoodoo, yes this is a Sputnik shot, and there probably is some falloff in sharpness towards the corners, but I’m not sure I can detect it! Maybe the pine needles at the far right are a bit soft. This is a pretty “easy” shot to secure sharpness as the deviation is quite low, (the nears are rather far away) but I would be surprised if I changed the aperture off the default f/22 hyperfocal setting. I do think the rock and ground appear sharper than the objects in the far distance, but I’m suspecting that this is more due to the haze and lack of high spatial frequency information in the distance rather than the Sputnik having overly relaxed hyperfocal markings, although it could be both!

Bryce Hoodoo

 

Camping Breakfast was shot at f/22 using the standard hyperfocal markings on the TL-120 and I used the entire range (the near distance was 3 meters). I might be able to detect the smallest lack of sharpness in the specular highlight on the blue water bottle, but I’m not sure. I think the exposure was 1/8 of a second, so the people are probably not perfectly sharp. Yes it was posed!

Camping Breakfast

 

In my opinion, Cloud Inversion does seem ever so slightly sharper than the others, but I’m not entirely convinced it is because of the more conservative DOF tolerance, but rather that the size of the plants at this distance provides a fairly high frequency subject and the low angle of the sun provides fairly high contrast, while non-hyper shots typically have inherently less high frequency detail.

 

So what do you think? Do you use the standard hyperfocal settings on your lenses? Or do you stop down one extra stop? Or some other technique? Ok, enough nerd talk. Sorry to ruin a perfectly good post with all this talk of sharpness! I certainly don’t think it’s the most important aspect of a successful MF3D shot, but it is fun to discuss.

Ian Andvaag’s D23 submission

by Ian Andvaag

Jade Lake (Narrow Hills Provincial Park, SK)

The last round I submitted a couple images I took at Narrow Hills Provincial Park, but not at this location. This is a lovely location in the North West section of the park with seven small (but very deep) lakes with very clear water. They are called the Gem Lakes, so-named for their rich blue and green colours. A network of trails runs around the lakes with several camping locations. I pitched my tent at the Diamond Lake site for two nights, which gave me a full day from dawn to dusk to photograph the area. The trails only total a length of about 6 km, so I did about 3 loops around the lakes throughout the day. This is a high spot overlooking Jade Lake. The spruce tree in the foreground is perhaps a bit gratuitous or cliche, but I thought it looked pretty and gave a good impression of what it is like to look down at the lake from the trail. The film is Delta 100, home-developed in D-67 reversal.

Meewasin Trail – Fall (Saskatoon, SK)

Meewasin Trail – Winter (Saskatoon, SK)

This is a section of trail quite near to my apartment in Saskatoon. It’s not the most remarkable location, but due to its proximity, I do get the opportunity to photograph it a lot (although I haven’t been recently). It’s the location I go to when there is some interesting light from a clearing storm or when there is hoarfrost in the winter before it gets blown off in the wind. The power plant and waste water treatment plant discharge into the river about 15 km upriver, so this section never completely freezes over. I thought the two images contrast each other nicely, although perhaps it’s a bit too repetitive since they are both taken from nearly the same perspective.

Tundra Swan (Wascana Waterfowl Park, Regina, SK)

In my hometown of Regina, there is a bird sanctuary beside the creek. There are some “display ponds”, but the grounds are really not that attractive. Although the birds are not captive, they are not easily frightened since they are used to being fed. In the shade it was rather dim using ISO 100 film, and I really was at the limit of what I could manage in terms of exposure. Handheld Tl120, not sure of the exposure settings, perhaps 1/60 and f/8. The shutter speed wasn’t enough to freeze the swan. There wasn’t enough DOF to cover the background or the foreground, but it wasn’t particularly interesting, so I just cropped it out. Next time I’ll hopefully have a flash with me, or maybe I’ll consider pushing Provia. I enjoy viewing these type of “action shots”, but I find them very challenging to take!

Ian Andvaag d21 submission

by Ian Andvaag

Beechy Sand Castle

Hyper Hills

The first two images I have submitted were taken last summer at a unique location here in Saskatchewan called the Beechy Sand Castle and Sunken Hill. There are a couple of quarter sections of ranch land near the inlet of Lake Diefenbaker on the south Saskatchewan river that are home to some interesting land formations. It’s on private land, but the owner is gracious enough to allow visitors to come and hike around the area. Legend has it that an underground gas pocket collapsed,  causing the land to give way.  One day, the rancher went to check his cattle, and the tracks left by his truck a few days prior led right into the crater of the Sunken Hill!

The location is only accessible during dry conditions, since you have to drive through a field to get there. It was very hot the day I went and also quite smoky from forest fires out west in British Columbia. After walking around a bit and seeing the lay of the land, I knew I wanted to try out some hypers, but I had neither a laser rangefinder, nor Mike Davis’ stereobase calculator. I tried some anyway, but as you can see by my slipshod cutting to expand a panoramic mount, I didn’t get it quite right. Most of the hypers I took had very distracting retinal rivalry in the water, but this one didn’t seem quite as off-putting for whatever reason. This summer I have a goal to get a working system for hypers using two Agfa Isolettes.

Smell the Roses

Frosting

The other two slides are from my city, Saskatoon, on one of the few days of the year that we get hoarfrost. It’s always so beautiful and it’s one of my favourite things to photograph in MF3D. I titled the one slide “Smell the Roses”, because the frost can make even a pile of overgrown weeds in an industrial district look pretty, and it seems like many people don’t stop to take notice.

Now that I’ve got a workable B&W reversal process, I’m more motivated to shoot black and white. Hope you enjoy!

From our guest, Matt Neima

by Matt Neima

Killarney Park

Before I forget, thanks to Steven Lederman for scanning these pictures for me! I think this was Delta 100 and processed by DR5.

This picture was taken on the chikanishing trail. Spoiler for me is the right image has a reflection or something that once you see it (sorry!) it becomes very distracting.

I wonder if it’s possible to touch up the emulsion to fix this….

Rondeau Park

Talk about harsh lighting! I think this went around in the IMF3D folio. Some people liked it, some people really didn’t like it. This was taken with my Spud a long long time ago.

Ricketts Glen

Taken with the TL-120 in Pennsylvania on a camping trip with James Mutch. There are a lot of waterfalls in a small area here. At one waterfall J and I watched a pro photographer taking a classic fall colour waterfall shot. His assistant held a maple branch with red leaves in front of the camera while he took pictures.

Whistler

Taken with a TL-120 on the same trip to Vancouver a few years back. At that time I posted a picture of my nephew on his roller skates. I’m hoping this is a new image to this folio.