nuxx.net
Making, baking, and (un-)breaking things in Southeast Michigan.

New Lens…

Now I’m wanting to sell my Canon EF-S 17-85 f4-5.6 IS lens and get this one instead. 28-80 f2.8 all the way across…

Only problems I can see is that it lacks IS, but it’s a lot faster. And a bit narrower range zoom-wise… I’d probably need something wide angle. And IS works all the time. With this lens I’d just have to open it up a bit, decreasing DOF….etc.

Hrm, decisions… decisions…

Cost is pretty much not an issue since I could sell one to pay for the other. But I did just get a circular polarizing filter for the Canon lens. I wouldn’t be able to re-use it, as the new lens would be 1cm larger. Hrm.

Oh, also, do any of you know a place where I could get some velvet? I could use white, black, and maybe red. Maybe… 4′ square pieces. I want something for the background when photographing things, but I want it to be non-reflective and not especially well defined.

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Coyote?!?


Coyote?
(Click for full size image…)

So today I showered and shaved, applied sun block to my head, and headed out to Holland Ponds Park to test out the new lenses I received yesterday. In short, they seem really nice… But that’s not what this post about.

No, this post is about the animal pictured above, which I believe to be a coyote. I was walking quietly along a path when I saw something largeish in front of me, and I was only able to bring the camera up and fire off a few shots. Unfortunately I didn’t have a chance to turn AF off, so focus is actually on the branch in front of the animal. Also, I only had it in single shot mode, so I wasn’t able to get more than three shots. That one there is the only decent one, I think.

Do any of you think that it might be something else? According to the Michigan DNR coyotes are found throughout Michigan, but I surely didn’t expect to find one in a park at ~1:30pm.

Also, turtles are very hard to photograph. They seem to notice if anyone is within 100′ of them, and then they dive right off of whatever log they happen to be on. I got a few decent shots of turtles — including one the size of a hard hat — but nothing I’d call great.

moved from livejournaloutdoors

Camera Lenses

Wow, the lenses I mentioned the other day are excellent. The Canon EF 50mm f/1.8 II is really… interesting. It’s amazingly light, takes really nice images, and seems to be a lot nicer than I expected. The focusing ring only moves about 1/4 turn which is great to operate with a fingertip. It also seems almost weightless, which makes me think I’ll keep it on the camera a lot. It’s also dirt cheap.

The Tokina 100mm f/2.8 AT-X 100 PRO D Macro seems excellent as well. Despite the cheesy (and strangely Asian-looking) gold accents and lettering, it feels better made than any lens I’ve yet been able to use. It feels ridiculously solid, and it’s just a dream to use. It also focuses much faster than I expected. Also, a 100mm 1:1 lens just seems EXCELLENT. Focused at the closest, something just past the lens hood. Oh! And the lens hood can be stored on the lens hood reversed, which is just *great*. The Canons don’t do that.

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PIC Burner

Tonight I made a parallel port PIC programmer from the MIDIbox PIC Burner schematic. Except I left off the power supply (I’ll use my benchtop one (photo gallery retired)) and added a DIP18 socket for the PIC16F88.

I’m able to switch VPP, VDD, Data, and Clock on and off with the proper voltages coming out of them. Unfortunately the software isn’t recognizing the programmer nor is it able to identify which PIC has been inserted in it. Ah well, I think it’s a matter of parallel port settings, which I’ll mess with another night.

Oh, and I had to etch two PCBs for it, because I screwed up the first one. I also learned what was most wrong with the PCB for the Casio SK-1 MIDI Modification which I screwed up. I think I didn’t let the photoresist ‘develop’ for long enough. I’ve found that with a fairly warm lye solution (the bottle had been soaking in hot tap water for half an hour) it takes about 1:30. With a room temp / cold solution after 12 minutes things still aren’t right. And when a contrast-y image appears, there is still some photoresist left in some points, which makes for an unclean etch.

At least now I know. Now I can go to bed and stuff. Oh, but only after I wash the lead off of my hands.

electronicsmaking thingsmoved from livejournal

Camera Lenses

Well, first off, both of my auctions sold via buy-it-now. This is good, especially as I purchased the lenses for less than they actually sold for. Not much less, but I didn’t lose any money.

Second, after talking a bunch with a bunch about lenses, I ended up ordering two lenses instead of the single Canon 60mm macro I had been previously considering.

What I ended up getting is the Canon EF 50mm f/1.8 II which is an especially cheap 50mm lens which receives some great reviews. It’s less than $80 shipped, and almost every review I read of it says that it’s an excellent lens just to have around.

The second lens I ordered, which also receives excellent reviews, is the Tokina 100mm f/2.8 AT-X 100 PRO D Macro. It’ll do 1:1 (life-size) at 30cm, and seems to be pretty well made.

So, the end result is that for an additional ~$100 I’m getting a 100mm 1:1 macro, a 50mm walk-around / portrait / whatever lens, and protective filters for both. Also, the Tokina comes with a hood in the package….

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SIDbox Update

Well, it looks like I’ve identified a problem with the SIDbox layout. Per this thread I shouldn’t be using a stand-alone oscillator for the SID. Whoops. That means any finally assembled boards will have a jumper running from where the oscillator goes over to pin 18 of the PIC. Not a big deal. Won’t break anything, it’ll just work around a potential problem.

Second, I asked the guy who writes and has designed the core of the MIDIbox stuff if he’d be all right with my selling these boards as kits. He had some suggestions, but he sounds pretty okay with it. I’m just not sure I wish to make the investment. The thread about that can be found here if you are interested.

So, I’m laying the board out again, and I’m going to be getting six prototype boards which should work well, but aren’t usable as kit boards.

I guess the question is whether or not I should attempt to put this together as a kit. I’m thinking an initial (or single?) run of 50 would work well… I just wonder if I can afford it. And I still can’t answer the question of why I want to do it. It just seems like something fun to do.

electronicsmaking thingsmoved from livejournal

Canon 50mm EF Macro Lens For Sale

Well, I put my macro lens up for sale on eBay. Hopefully I’ll net just over $400 after I sell it.

On top of my grey market question from previously, is there any reason you all can see not to buy a refurb lens? I can get the lens in question (the Canon EF-S 60mm f/2.8 Macro USM) for $299 refurbished, $379 grey market, or $384 new. I’m really thinking I should go with the $299 refurb one, as that’s a huge savings. The lens hood will add another $27 or so, but that’s all right.

The auctions I’ve posted can be seen at the following two URLs, which will become active after 10:00pm EDT and 10:30pm EDT respectively:

Canon EF 50mm f/2.5 Compact Macro — LIKE NEW 50
Canon Life-Size Converter EF – Like New! Macro 50mm 50

If any of you would like to buy either of these pieces, please let me know before the auctions start so that I can cancel them.

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SIDbox v1.2 — Boards Ordered


SIDbox PCB Layout v1.2
(Click for SIDbox Gallery…)

Well, I did it. I just submitted an order with PCBFABEXPRESS for six PCBs made to the board layout seen above. US$78 for the boards and $15 shipping, and I should have them some time next week. I also placed an order with Mouser for the ‘new’ PICs (PIC18F4620), the parts for the new MIDI input / output handling (the IIC MIDI Module as opposed to straight off the PIC), and the stuff for a PIC programmer I’m piecing together.

With any luck I’ll have a working SIDbox prototype by the time I head off to the UK. This will be nice. If everything is as I hope, from here on out I’ll just have to etch one more PCB and everything after this will be soldering and assembly. Well… Except for the design of the rear panel for the case, but that won’t happen until I’m certain that I have a functioning board / synth.

Oh, I just remembered that I also need to pick up a USB to MIDI adapter… Hrm. Okay, have to find one of those. Still, things are coming along nicely.

This weekend I headed up to the northern Lower Pennisula (of Michigan) to visit my grandparents and meet up with for dinner. I also went to Sleeping Bear Dunes National Lakeshore (and received a mighty sunburn) and Hartwick Pines State Park. Photos from each are forthcoming.

I guess tonight I’ll just go and try to acquire some PCB etchant from Radio Shack. Then I’ll confirm / finalize this PCB design for the PIC programmer, etch it, and… That’ll probably be the whole evening.

electronicsmaking thingsmoved from livejournaltravel

Macro Lenses

Well, I think I’m going to get a new macro lens. I’ve currently got the EF 50mm f/2.5 Compact Macro with the Life-Size Converter EF and it makes for a really nice setup. However, with the Life-Size Converter attached, I can’t focus past maybe 2m, so it makes the lens macro / close up only.

I think that I’m going to purchase the EF-S 60mm f/2.8 Macro USM and off the 50mm and Life-Size Converter on eBay. I should be able to get enough to at least cover the cost of the new lens. The 60mm should be a good replacement, because then I can use it for both macro and walking around, and as a USM lens it should be a good bit easier to focus manually.

So, yeah. New lens. I think. I’ll probably wait until Monday to decide, though… I don’t want to rush into this decision too much. Also, the two camera shops I’d likely order from are Jewish-owned and thusly closed for the Sabbath. Even if I order the lens now, it won’t ship until Monday.

I also finially ordered a circular polarizer. I should be getting a 67mm Hoya S-HMC Circular Polarizing filter via eBay well… Hopefully soon. I wish I had it for tomorrow, but alas… I don’t.

Oh, yeah, I’m hoping to go to Sleeping Bear Sand Dunes tomorrow. That should be nice. I hope.

acquired thingsmoved from livejournaltravel

eBay C64 Issues

Well, the problems with the eBay auction for the C64s is working out well. I’m talking to the guy on AIM and it seems my shipment did get mixed up with one from another auction.

It seems like everything is going to get sorted out. I may end up with only one SID out of the deal, but that’s all right.

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