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Olympus OM1

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#26 Old Dinosaur

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Posted 03 June 2008 - 02:36 PM

I used the OM1s for years and always liked the 1-12 and 1-9.
Even better than the Beattie Intenscreen.

#27 tommyhawk13

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Posted 04 June 2008 - 06:14 AM

You can try a Hartmaan mask if you don't have the funds for a Stiletto. Someone posted a nice template program here on the boards.
I shot M37 in the backyard through my 8" f/6 for 7 minutes on Fuji Provia 400X. It could definitely use some more exposure, and keep in mind I am a complete novice.
I used a home made Hartmaan mask, and a cable release, of course.
Posted Image
I also used a 1/14" nosepiece, but I have since bought a 2" for prime focus. I think the 2" will reduce vignetting. The sides of the pic have been cropped for that reason.

#28 killerwolf

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Posted 05 June 2008 - 12:59 AM

here it is
http://billyard.serv...m/Hartmann.html

#29 donnie3

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Posted 05 June 2008 - 04:28 PM

thanks everyone for the info. don

#30 jrw11

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Posted 05 June 2008 - 06:43 PM

That Hartmann mask template program is a 100% :waytogo:

#31 tommyhawk13

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Posted 07 June 2008 - 02:57 PM

I just jumped on the OM-1 bandwagon. For $50.00 + shipping, I scored an OM-1 md, and it came with a 1.8/50mm lens, a zoom lens, some sort of crystal optics super-wide macro thingy, and a vivitar 283 flash! :jump:
I used to have the 283 flash, until it got stolen.
I also bought a 1-8 focus screen, and I am bidding on a T mount.

Any suggestions for lenses? I'd like to get a wide angle in the 24mm range.

#32 Old Dinosaur

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Posted 07 June 2008 - 03:39 PM

There's a lot of good OM mount glass around. Zuiko even had an 8mm fish eye and some nice 21 to 28mm lenses. Buying a lens sight unseen could be chancy though, unless there's an ironclad return policy.

#33 huckabuck

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Posted 07 June 2008 - 05:05 PM

hello tommyhawk,
the zuiko 50mm 1:1.4 is a great ap lens if stopped down 1 or two stops. also the 135mm 1:2.8 is probably the best you can buy in the zuiko series. no need to stop it down at all(although i usually do) and the 200mm 1:4 works well stopped down

#34 Old Dinosaur

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Posted 07 June 2008 - 05:15 PM

Keep in mind too, if you do find a few nice Zuiko or other OM system lenses and decide to get an Oly DSLR, those lenses will mount right up with an adapter ring. Manual only of course.
Main reason I stayed with Oly, I had so much nice OM glass.

#35 killerwolf

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Posted 11 June 2008 - 01:23 AM

Keep in mind too, if you do find a few nice Zuiko or other OM system lenses and decide to get an Oly DSLR, those lenses will mount right up with an adapter ring. Manual only of course.
Main reason I stayed with Oly, I had so much nice OM glass.


its what i did i have the evolt 330 and use my 150mm telephoto lens and my 50mm

#36 palerider

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Posted 23 July 2008 - 02:30 AM

I have an OM-1n body that I bought new in the 70's and it's been stored in a closet for many years. I also got a pair of Kiron telephoto's for it, a f/2.8 28-85mm and an f/4 85-210mm. After stumbling across this thread I dug it out of the closet and checked it out. Works like a charm. As far as I can tell, it's in pristine condition. No fading, streaking, or discoloration on the mirror or in the viewfinder. Since many think this is one of the best film cameras for AP, I thought I would give it a try. So I have two questions:

1. Can I use either of the telephoto lenses or should I just attach the body to my focuser with a T-Ring? I didn't get the orginal 50mm, 1.4 lens, but I know where I can get one in excellent condition. Would it be worthwhile to invest in the 50mm?

2. Does anyone know where I can get a 1-8 focusing screen? I've done a Google search with no luck. Obviously they are hard to come by.

Thanks.

#37 Nightfly

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Posted 23 July 2008 - 05:38 AM

Palerider,

What an excellent find. Although the telephotos are not recommended as much as prime lenses, why not use what you have and give it a try?

Since the camera has been sitting around for awhile it would be a good idea to have it services, that's up to you.

A t-ring is an inexspensive accessory and is the prefered mounting method for scopes.

Excellent used lenses can be found cheap on eBay.

Good luck.

#38 huckabuck

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Posted 23 July 2008 - 06:07 AM

Palerider,

i would suggest starting with some wide-field work. the frustration factor is much smaller than prime focus.

as far as telephoto lens go they are not generally the best for ap. they have too much glass in the light path.

a 50mm lens is a good lense to start with. but if you can get a 1:8 it is a better lense for ap than a 1:4

#39 palerider

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Posted 23 July 2008 - 10:45 AM

Yeah, I pretty much figured that was the case with the telephotos. Good point about starting out with wide-field too. I've been doing a lot of reading and prime focus doesn't seem like the place for a beginner to start. Looks like I'll be hunting for a 50mm lens now. Just curious about a 1.8 vs. a 1.4. I would have thought the faster lens would be better. Hey, but that's why I ask the experts.

Thanks to you both for your suggestions.

#40 huckabuck

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Posted 23 July 2008 - 04:11 PM

i'm not an expert. i just pass on what i've read and learned. the faster lens usually is the better lens but.... for some reason the faster 50mm's produce bloated stars at the edges. the 1:8 will to but not as bad. closing the f-stop down 1 or 2 steps will help.

also the zuiko 135mm lense is probably one of the best you can use (also stopped down) and you can pick them up cheap on ebay

#41 Nightfly

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Posted 23 July 2008 - 06:38 PM

No matter what 50mm lens, try at f/2.8 and expose 20 minutes if your sky is dark enough. You'll like the results.

#42 TxStars

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Posted 24 July 2008 - 09:16 AM

Ahh yes a 50mm at 2.8 is a good way to test your sky.
Shoot 10m / 15m / 20m on E-200 and look at the results.
When you start to see a green tint to the back ground you have exposed too long. Then you can adjust down from there.

#43 palerider

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Posted 24 July 2008 - 02:48 PM

Thanks for all the tips. I just scored a Zuiko 50mm f/1.8 lens in pristine condition on eBay. Should be here in a day or two! On my way to the store for a roll or two of E200 film. Now I'm psyched!

#44 palerider

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Posted 24 July 2008 - 02:51 PM

Oh, one more thing. First attempt will be wide field on a sturdy tripod. I assume I set focus to infinity?

#45 tommyhawk13

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Posted 24 July 2008 - 04:04 PM

Yes to the infinity question. Are you going for star-trails?

You can aim at Polaris, and stop the lens down to about f/8 and extend your exposure times. Only the brightest stars will show up, though.

#46 Nightfly

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Posted 24 July 2008 - 04:26 PM

If you can find it, use Provia 100F for long exposure star trails. Very good results! Like Tommyhawk said, stop down to f/8. Use f/5.6 for an hour or less. I'm assuming little light pollution though.


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