Showing posts with label Chimney Gulch trail. Show all posts
Showing posts with label Chimney Gulch trail. Show all posts

Saturday, February 16, 2013

The awesome new Nikon 70-200 mm f/4 VR

Warning: To those interested mostly in my pictures, please ignore this nerdy gear related post.
After quite a bit of analysis and renting lenses (I like lensrentals.com I settled on the new Nikon 70-200mm f/4 VR lens as a good compromise between weight and image quality. It came in the mail a few days ago and I tested it out the first chance I got two days ago. I knew it was good but I am still astounded at the enormous detail you can get out of this when used correctly. Here is a sample image:

Snowy canyon
Snowy Canyon. Bigger and prints.
Nikon D600, Nikkor 70-200 mm f/4.0 at 70mm, f/5.6, 1/50s (handheld), ISO 100.

Of course this a web image so you won't really see how sharp this really is, so here is the central portion of the image with the top of the little S in the road showing.


I did not optimize this image for retina displays, nor display sharpen it. The only real adjustment in Lightroom is a +1EV exposure adjustment ( I forgot to overexpose for the white snow). So on retina it will not look as good as it does on normal screens. Just look at that detail. On most computer screens (usually around 100 ppi), you are looking at the equivalent of a 60"x40" (1.5 x 1 m) print.

Here is another example:

Powdered sugar
Powdered sugar. Bigger and prints.
Nikon D600, Nikkor 70-200 mm f/4.0 at 120mm, f/8.0, 1/30s (handheld), ISO 100.

That is handheld at 1/30s at 120 mm! Now check out the 1:1

Powdered sugar
Pretty amazing if you ask me.

Saturday, March 3, 2012

Clear Creek Canyon

Clear Creek Canyon sunset
Nikon D300, Tokina 11-16 mm f/2.8 at 11 mm, f/11, 1/30 s. Handheld and using a grad ND filter. Buy a print.
Flickr image. Google+ post.

This image was taken halfway up one of my favorite mountain biking trails - Chimney Gulch - right after windy saddle. I haven't been able to ride my bike for a while now because of the significant possibility I'd wreck the trails. On this evening I strapped on my snow shoes which is always really funny to do so close to the urban area. One of my reasons for this outing was to test out my new Gitzo tripod (awesome btw) but I shot this image handheld as an afterthought.

Sunday, March 27, 2011

Tallboy ride on smokey Chimney Gulch

Sorry for all the bike related posts. I have had very little time to go through my photographs (work is really busy) and my backlog is long.

Ever since my self built bike was stolen recently, I have been pining for a ridin'. And I need to get back in the saddle as they say. So I decided to a demo program at a local bike shop. In this case I selected Golden Bike Shop mostly because they carry brands I carry and because they treated me well when my Ellsworth frame broke last year. Even though it was far out of warranty they offered me quite a bit off a new Ellsworth frame. Of course for those who know the bike world, you know that the cheapest Ellsworth offers is over $2k. That is how I ended up with a Titus frame which I found online at JensonUSA for a very fair price. Of course that's all in the past now and I need to move on. So I need to find me a new bike. I have been debating myself whether I will build myself another bike from the frame, but for some reason I don't really feel like it right now. So I probably will buy a complete bike and upgrade the components over time when they go out. The latter is pretty quick for me as I do ride my bikes quite hard. Doing a demo program is a good deal here as the bike shops will credit you for the entire cost of the demo when you buy a bike from them. The demo programs are pretty comparable in general. The Golden bike shop's deal is pretty nice. For $150 (which will get refunded if you buy from them) you get to ride six different bikes on 6 different days. So basically 6 rentals for fairly little or nothing in the end.

Today I decided to go high end just to get that out of the way. I rode the Santa Cruz Tallboy in the higher end build. This is a twentyniner full suspension frame that they built up with quite high end components. The twentynine signifies that it uses 29" wheels instead of the standard 26" for mountain bikes. The bike runs $4700 or so as it is a carbon fiber frame. That is many times over what I would ever spend on a bike, so this exercise was purely academic. This is a fun bike that powers over more than what you can on a bike with 26" wheels. Since there is a wildfire near Golden that is making it very smoky here I decided to head a little further north for my test ride and got to the White Ranch trailhead, only to discover that they were using the parkinglot to fly the firefighting helicopters from. Looked pretty cool (sorry forgot to take pictures), but it meant I couldn't ride the trail there. So I decided to head South. When I came by Chimney Gulch I noticed that the wind had shifted more North and that that was surprisingly smoke free now, so I decided to ride it. This is a really nice, fairly technical ride with some good climbing on rocky parts and a lot of hairpins and a fast, fun downhill. The bike handled well but the suspension needed some tuning which I did later that night so that the next morning early I could do another test ride. The trail as captured by my phone's GPS chip is below displayed in Google Earth.



The height profile is here (in red):


As you see a nice slightly over 1 hour ride and nicely very close to my workplace. TO test whether tuning the suspension makes a difference, I rode Apex park with the same bike the next morning, including the excellent Enchanted forest trail. The track is displayed below:

The altitude profile is in blue two images above. This is a shorter trail that can be done in under an hour.

Observations about the bike:
When you tune the suspension, it handles really well. This is a general issue with suspension bikes. If you don't get the suspension tuned for your weight and style, you really cannot judge the bike from demoing it. It handled about as good as my old Titus even though the Tallboy is a far more expensive bike. I can indeed ride some more things that on my old bike were not always ridable simply because of the bigger wheels. The geometry was also very good. I rode down several very tight turns with waterbars that I normally have a hard time making. The bike's weight is very surprising. About the same as my old Titus that only had 26" wheels. Carbon fiber really helps there. Hydraulic brakes are great. They do indeed stop you in your tracks. I didn't like how the levers were setup. After the downhill my fingers were cramping due to the large distance to the levers and the brakes being set so aggressive. Probably an easy fix. Now for the negative points. The bottom bracket shell and consequently the pedals are very low on the frame and you almost sit up straight on this thing. The low pedals make it very easy to constantly hit rocks and waterbars with the pedals, which I found disconcerting with such a big bike. On the 26" bikes I have ridden I rarely hit the same rocks and bars. We'll see if this is a general thing with 29" wheeled bikes. I can imagine that being so because the rear wheel might be pushed back in the frame geometry in order for the rider to not be too high up. Perhaps a large frame would be better for me for this reason. I usually straddle the border between medium and large on these frames.

Here is the bike on the enchanted forest trail. I liked the (for me) patriotic color.
Sant Cruz Tallboy

As an aside I saw the Indian Gulch fire quite clearly from the windy saddle on the CHimney Gulch trail. This is a point where the trail crosses the road up lookout mountain and lots of people were watching the firefighting efforts. Here is a quick iPhone panorama of the fire and the smoke (bigger in the link).
Indian Gulch fire