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Old 17-06-2013, 11:01 PM
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rcheshire (Rowland)
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Medium format - widefield lens

Hasselblad 100mm (second hand) for wide field (with a full frame sensor). Good, bad, indifferent, no response?

Last edited by rcheshire; 18-06-2013 at 01:39 PM.
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Old 18-06-2013, 03:55 PM
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Originally Posted by rcheshire View Post
Hasselblad 100mm (second hand) for wide field (with a full frame sensor). Good, bad, indifferent, no response?

Medium format lenses can be good as they often have a large backfocus making it easier to use them with a focuser.

I use Pentax 67 lenses and they work well that way. Although there is variation in the performance. The longer focal length the better they seem to perform.

Greg.
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Old 18-06-2013, 08:48 PM
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Thanks Greg. In your opinion, do you think there a lot of difference between the Hasselblad and Pentax lenses for astrophotography?
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Old 19-06-2013, 01:06 PM
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Photographically speaking, Hasselblad is one of the top cameras systems around and their lenses are as good as any. I don't know how that compares with Pentax gear though.
I'd be wanting to try the Hasselblad just to find out ..
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Old 20-06-2013, 10:13 PM
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I don't know anyone nor ever seen an image taken by a Hassalblad lens so I can't comment. I don't know why that is.
Perhaps they are very expensive.

In Pentax world the lenses vary.

For example the Pentax 67 55mm F4 is a dog of a lens. Yet the 165mm F2.8 is gorgeous. Its fabulous wide open at F2.8 which is quite rare for a lens. The 300mm F4 EDIF is very good but expensive and somewhat rare.

I googled and found the same topic on Cloudy Nights:

http://www.cloudynights.com/ubbthrea...9/Main/5817054

Seems like they are made by Zeiss which usually means top notch. But as per the thread you need to evaluate a specific lens.

Greg.
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Old 21-06-2013, 06:54 AM
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Greg, Maybe you mean the Pentax 6x7 55mm f/3.5. I use the Pentax 67 55mm f/4 and it is exceptionally good.

I have attached a few examples.

George
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Click for full-size image (20130217 PX F4 Q9 Ha NGC3372 3x900s_stitch Final Comp.jpg)
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Old 22-06-2013, 07:08 AM
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Thanks Greg. There are a few people using Hasselblad's of one type or another and the glass is Zeiss. I read the cloudy nights article previously. Cost wise, and getting away from perceptions, second or third hand, around AUD800. Anyway, it seems that no one on this site is, or has used the lens for AP.
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Old 26-06-2013, 01:32 PM
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Greg, Maybe you mean the Pentax 6x7 55mm f/3.5. I use the Pentax 67 55mm f/4 and it is exceptionally good.

I have attached a few examples.

George
You may be right George. Your image there is exceptional. I suppose there could be variations in copies as well. Mine was OK once binned 2x2 wide open.

Greg.
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Old 26-06-2013, 01:33 PM
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Thanks Greg. There are a few people using Hasselblad's of one type or another and the glass is Zeiss. I read the cloudy nights article previously. Cost wise, and getting away from perceptions, second or third hand, around AUD800. Anyway, it seems that no one on this site is, or has used the lens for AP.
Probably because they are so expensive and they are not that useful on 35mm cameras being manual focus. They could be brilliant.
But terrestial use has different requirements and often times lenses are at their weakest wide open where we need them to be good.

Greg.
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Old 03-07-2013, 12:36 PM
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I suspect so, Greg. Cost wise, well, I guess that's relative. My interest is wide field, preferably with lens attached - entirely for convenience. Good glass is an attractive proposition, even if it's second hand, as opposed to a refractor and associated hardware for the same price. A new Hasselblad is an expensive proposition and one I would ordinarily not consider.
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