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Astrophotography and Sketching >> Film Astrophotography

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wavefront
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Reged: 07/15/05

Loc: Colorado
Mamiya 645 - Keep it or sell it ? new
      #5538718 - 11/25/12 01:19 PM

I had planned on putting together a 12.5 inch newtonian with a large focuser. It's getting increasingly difficult to find places that process the 120 film. I don't know whether to keep my old 645 for use with this scope or not. Please advise.
Thanks


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Hikari
scholastic sledgehammer
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Reged: 01/05/11

Loc: Maine, USA
Re: Mamiya 645 - Keep it or sell it ? new [Re: wavefront]
      #5538732 - 11/25/12 01:32 PM

Why not process your own film? C-41 (color negs) is an easy process. You can get kits at Freestyle. You still need to find a way to dispose of the chemistry. I closed my color darkroom and got out of film because of the expense and the difficultly of getting rid of the chemistry.

Still, this is a choice you can make anytime. There is no rush.


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Giorgos
super member


Reged: 01/14/11

Loc: Athens, Greece
Re: Mamiya 645 - Keep it or sell it ? new [Re: Hikari]
      #5539744 - 11/26/12 02:09 AM

Keep it, buy B&W film and develop it yourself!

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Lynnblac
super member
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Reged: 04/06/09

Loc: Arizona
Re: Mamiya 645 - Keep it or sell it ? new [Re: wavefront]
      #5540859 - 11/26/12 07:24 PM

Mamiya 645 do not go more much these days.

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Achernar
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Reged: 02/25/06

Loc: Mobile, Alabama, USA
Re: Mamiya 645 - Keep it or sell it ? new [Re: wavefront]
      #5542437 - 11/27/12 04:31 PM

You can develop your own film, and with a "changing bag" you do not even need a darkroom to unroll the film from the backing paper and load it into the reel(s). Once the lid is on the tank, you can pour the chemicals into and out of the tank without exposing the film. I've developed untold numbers of rolls of 35mm film and some 120-roll film too. I even developed 4"X5" sheet film in trays and open tanks in total darkness. Once the film is through the fixer or the bleach/fix, the tank can be opened because the film is no longer sensitive to light. You then wash the film, and after a final treatment in a wetting agent and or stabilizer solution, you can hang it up to dry in your shower stall or anywhere else where dust will not get to it. Processing film is not hard to learn, but there are some important tricks to remember to get good results. A trip to the library will perpare you for those. Aside from that, a roll of junk film is also needed to learn how to load the reels, which you must learn to do by touch since any light during this step will expose the film. You can order what you need from suppliers such as B&H Photo or Adorama, and any number of other sources listed in photography related magazines.

Taras


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TxStars
Pooh-Bah
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Reged: 10/01/05

Loc: Lost In Space
Re: Mamiya 645 - Keep it or sell it ? [Re: Achernar]
      #5543122 - 11/28/12 12:24 AM

Keep it and do your own development.
Order film and chemicals some place like this:
http://www.freestylephoto.biz/


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jrw11
professor emeritus


Reged: 06/09/07

Loc: unknown
Re: Mamiya 645 - Keep it or sell it ? new [Re: TxStars]
      #5571864 - 12/15/12 12:46 AM

have a M645 Pro. agree with the others keep it.

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starman876
Postmaster
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Reged: 04/28/08

Loc: VA
Re: Mamiya 645 - Keep it or sell it ? new [Re: jrw11]
      #5573113 - 12/15/12 08:11 PM

you can buy a digital back for it. Not cheap, but an option.

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gillmj24
Post Laureate
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Reged: 12/06/05

Loc: PA
Re: Mamiya 645 - Keep it or sell it ? new [Re: starman876]
      #5597067 - 12/30/12 10:38 PM

I have used 120processing.com but haven't tried astrophotography yet.

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ih8usrnames
super member


Reged: 08/08/11

Loc: Wheaton Illinois
Re: Mamiya 645 - Keep it or sell it ? new [Re: gillmj24]
      #5641776 - 01/25/13 12:11 AM

This is the first time I have investigated this area of CL.

I process 4x5 B&W at home and starting to investigate color process for 4x5 and 35mm.

I could not mind getting a 645 but I honestly am longing for a hasselblad.


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Michal1
sage


Reged: 07/25/10

Loc: Czech Republic, Central Europe
Re: Mamiya 645 - Keep it or sell it ? new [Re: ih8usrnames]
      #5641975 - 01/25/13 06:15 AM

Hi Dale, welcome to the film forum!
As far as I know Hasselblads have problems with holding film flat during long exposures. I recommend you to start a new thread and ask the people having personal experience with these cameras.
In any case, good luck to you.


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ih8usrnames
super member


Reged: 08/08/11

Loc: Wheaton Illinois
Re: Mamiya 645 - Keep it or sell it ? new [Re: Michal1]
      #5642924 - 01/25/13 04:28 PM

I don't want it so much for astro, I want it for photography in general. I just wanted to be part of the conversation and say hello.

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ponz
super member


Reged: 07/18/12

Loc: Kansas City, MO
Re: Mamiya 645 - Keep it or sell it ? new [Re: ih8usrnames]
      #5645837 - 01/27/13 11:09 AM

I sold mine a few years ago. It went for peanuts. The longer you hold it, the less you'll get for it.

Ponz


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