Archive for February, 2009

Ode to Film – Fall ‘08 at the Arboretum

Posted by Mark on February 27, 2009
Photography / No Comments

Just got these back from National Camera – and I have to say – this is why I love film. Digital just can’t do this.

Fall Flowers

Two more after the jump:

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CMoy Amp “Done”

Posted by Mark on February 26, 2009
music / No Comments

Being a music nerd – I bought some sweet headphones about a year ago – Beyerdynamic DT770 Pro’s. Unfortunately I was borderline underpowering them, and within a few months what started as light buzzing in the left ear got so bad they were unlistenable. When the warranty check came I decided to get a pair of Sennheiser HD280’s (I’ll pay to get the DT770’s repaired). To avoid underpowering and wrecking these too, I decided to either buy or make a headphone amp. I wasn’t happy with what I was seeing to buy, and I just knew that in order to get something that would do what I wanted – I’d be spending at least $200-300, which I just can’t justify right now.

So I decided to rock the DIY ethic and build a CMoy amp – using the instructions on Tangentsoft’s Audiologica DIY Audio page, found here: http://tangentsoft.net/audio/cmoy-tutorial/. He lays out a comprehensive parts list, schematics, wiring diagrams, and lays out tweaks to make it your own. I opted to use bigger \ higher quality capacitors on both the power (470 uf vs 220) and audio circuits (.47 uf vs. 1) – since I tend to listen to a decent amount of hip hop, and rock that has a decent amount of bass \ deep drum hits that can tax smaller capacitors. I upgraded the OPAMP from the Burr Brown OPA2132PA to the OPA2227PA – to avoid the tubby lower-end while keeping the flaw friendly chip design. (I bought both just in case – but the 227 is a worthwhile upgrade) I also decided to run the amp at 18v rather than a single 9v. The bigger caps and 2x 9v batteries meant I couldn’t stuff the thing in an altoids tin – but I probably won’t be using this on the go too often.

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Wiring took two nights, followed by a frustrating search for a proper enclosure. I wanted to go as small as I possibly could, but finding something that would fit everything without being the size of a shoebox ended up being next to impossible – at least without waiting for something to ship. I opted to go with two cases from Radioshack – drilling out the circuit board stand-offs, insulating the board and hot-gluing it to the bottom of the larger case. I re-wired things down to assembly size, but just as I was about to seal up the bottom compartment – the main power wire broke (sonofa!). I soldered that lead to the LED lead (overheating that and burning it out in the process), but at least had a working power circuit again.

After that fiasco I got everything back together, finished up the top half, and everything works! The amp sounds fantastic – with almost no noise (which considering its basically running at full power – with volume control at the source, due to not being able to find a proper volume control pot – not bad).  The headphone connections got a little bit loose after desoldering and resoldering the connections, and I neglected to testfit the powerswitch with the headphone out jack in place, and had to move it. Lessons Lessons.

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At some point I’ll replace the headphone jacks, fix the power led, fix the main power lead to the circuit board, and hopefully find a better sized enclosure. For now, I’m really happy with the outcome – This is the best my music has sounded in a while. I’d definitely recommend giving this project a go if you need a headphone amp, don’t want to pay a ton, and are at least semi comfortable with DIY wiring projects.

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Fall Photos, Another Sick Camera.

Posted by Mark on February 26, 2009
Photography / 2 Comments

Well, I got my test rolls back from National Camera – and the extent of the Leica’s shutter issues are clearly apparent. It’s next in line for an overhaul in the next few weeks.

Bad exposure or no – I like these shots. These were taken at Tettegouche State Park this past fall, and now I’ve got an easy excuse to go again.

Berries Over Lake Superior

3 more photos after the jump:

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Technically Trespassing Target.

Posted by Mark on February 23, 2009
Photography / No Comments

When I was where the Minnehaha meets the Mississippi, there was a loud clang, and voices arose from nowhere.

Turns out, there was 5 or 6 people that came from about 3/4 of a mile up this drainage tunnel. The gate is unchained, and could be an interesting tunnel to shoot \ explore. Am I wierd?

(These are scans of negatives that Ritz didn’t handle very well. The negs are a bit on the thin side, and I adjusted as much as I could in Lightroom without spending a couple of hours each, but they still aren’t great)

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3 more photos after the jump:

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Old Cameras Rule. Ritz Sucks.

Posted by Mark on February 23, 2009
Photography / No Comments

Saturday I wandered around with the intention of exploring the Mississippi river banks in Minneapolis, and while I ended up at a park I’ve been to before – Minnehaha falls park – I explored down to the river and saw things I haven’t seen before.

I took the Pentax loaded with b&w film, and my Tower rangefinder camera loaded with some Kodak UC100 pro film. I’ve got a thing for old cameras, and figured it would be a good time to play with my new lightmeter (Sekonic Brockway Norwood Director ~ late 50’s vintage) (I’ll post on my gear at some point in the near future).

The weather was nice – 15-20 degrees, sunny, fresh snow, no other people around, a nice quiet Saturday afternoon.

I decided to drop the film at Ritz (Ridgedale) for processing + their high-res scanning services, and no prints. Should be done in about two hours. I get a call an hour later saying their machine went down, they don’t know when it will be fixed, but will call with an update. Monday morning – no update – I call – they’re done. Pick them up, and after the order being $25 instead of $20 – I’ve got film and two CDs. Import to Lightroom and its pretty obvious they suck. Bad scanning levels, tons of dust, and oh yeah – scratched negatives. Soooo glad this is essentially a test roll. (I also have film at national camera for similar services – to decide where to get the rest of my film processed)

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2009 or 1959?

That being said, I’m happy with the camera, and the photos it puts out. They definitely have that old camera feel – and I can think of some situations that I’ll love having that old camera feel. You just can’t replicate the old aesthetic with modern gear.

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