All Forum Comments
Comment by Mannesty posted on macro lens at 29/11/2007 - 16:43
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G
Thanks George.Mannesty wrote:
It's the other way around. The 1.7 is flatter, and therefore better for macro.Quote:
any advice on a good lens fo use on a bellows is apreciated.
SMC Pentax (M,A,F,FA) 50mm 1:1.7 makes an excellent companion to the bellows for macro photography. I believe the 1:1.4 variant has a flatter field of focus, useful for copying.any advice on a good lens fo use on a bellows is apreciated.
G
Comment by Mannesty posted on macro lens at 29/11/2007 - 16:33
Quote:
any advice on a good lens fo use on a bellows is apreciated.
SMC Pentax (M,A,F,FA) 50mm 1:1.7 makes an excellent companion to the bellows for macro photography. I believe the 1:1.4 variant has a flatter field of focus, useful for copying. The latter however is much more expensive and a used SMC Pentax-M 50mm 1:1.7 can be bought very cheaply. The electrical contacts in the 'A' and later lenses are redundant on a bellows but you might like to use the lens as a normal prime so a Pentax-A or newer is preferable.any advice on a good lens fo use on a bellows is apreciated.
Comment by Mannesty posted on macro lens at 28/11/2007 - 18:42
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Thanks again for your inputs.
It seems like it is a match between:
70-300 APO macro vs. DA 50-200mm
/Skipper
Of these two, I find the Sigma only a little less wide at the wide end, but far more versatile generally as it extends to 300mm AND has macro capability. I have both lenses (Samsung badged 50-200mm) and I use the Sigma more.Thanks again for your inputs.
It seems like it is a match between:
70-300 APO macro vs. DA 50-200mm
/Skipper
Comment by Mannesty posted on K10D Upgrade of kit lense at 30/11/2007 - 16:11
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Life on bread and water and no luxuries like they have today in the UK.
In some places in the world, the population demand blood for giving a teddy bear a stupid name. The same name adopted by a world class US boxer many years ago. Thank god he chose the name Ali and not Alah . . .Life on bread and water and no luxuries like they have today in the UK.
Mad? You bet it is.
Comment by Mannesty posted on I was robbed at 03/12/2007 - 10:44
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B) if it was desperation (like trying to feed their kids after some bad luck) I call it charity and call it a day.
I like your attitude Don, but sadly, in all probability the theft was to feed a drug habit, not children.B) if it was desperation (like trying to feed their kids after some bad luck) I call it charity and call it a day.
Bad luck Clarky. I feel for you. It almost happened to me once. In bed, at 4AM, myself and my family were sound asleep (that's the scary part), somebody removed a double glazed unit from a kitchen window. Fortunately, they hadn't reckoned on coming face to face with my dog who started barking at that point, and leggged it.
Comment by Mannesty posted on I was robbed at 30/11/2007 - 16:02
Not being an egghead, I had to look it up too. You can find an explanation of Photogrammetry here.
I think I can safely say that none of us here will have much useful input but I'll happily welcome being proved wrong.
Perhaps Mongoose could elaborate and explain exactly why this science is useful to him/her.
I think I can safely say that none of us here will have much useful input but I'll happily welcome being proved wrong.
Perhaps Mongoose could elaborate and explain exactly why this science is useful to him/her.
Comment by Mannesty posted on Pentax Photogrametry at 23/11/2007 - 22:11
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Also using the lens wide open can easily lead to purple fringing/CA (I will admit I am not really sure of the difference between the two) if shooting a high contrast scene. I even have this problem with the FA 31mm Ltd.
Maybe this will help.Also using the lens wide open can easily lead to purple fringing/CA (I will admit I am not really sure of the difference between the two) if shooting a high contrast scene. I even have this problem with the FA 31mm Ltd.
Comment by Mannesty posted on Should I buy a K10D now or wait? at 26/11/2007 - 12:17
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It would be interesting indeed if it turned out that they were all designed for a 1.3x crop sensor.
That's not likely John. I see a tiny amount of Vignetting from my DA 12-24mm, and a bit more from my DA* 16-50mm. The DA* 50-135mm seems good though.It would be interesting indeed if it turned out that they were all designed for a 1.3x crop sensor.
Comment by Mannesty posted on Should I buy a K10D now or wait? at 23/11/2007 - 17:31
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Does your sensor need cleaning?
Odd, the first two pics have the same piece of fibre in the same place ? ? ?Does your sensor need cleaning?
Comment by Mannesty posted on LBA Tamron 90mm Macro SP Di at 27/11/2007 - 17:58
Is there a lot of difference between the bellows lens and a normall lens, greater dof maybe?
Thanks pete
Is the bellows lens better? I don't know, but it is less versatile as it can only be used attached to a bellows, a 'standard' lens is faster and can be used on the camera as well.