Comments made by Clarky - Page 35

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I believe it was only the Super Takumar's that had the radio active elements, I owned a 50mm 1.4 super Tak that had turned yellow and I didn't like the yellowy cast it left on my pics.

You need to be careful if using one of these lenses with tubes, I was taking pics of bugs at close range and they were all dropping dead of radiation sickness, One good thing though is the batteries in your camera never go flat

Comment by Clarky posted on Radioactive lenses at 15/01/2010 - 11:49

I think it will go on if you zoom the lens out to its long end, but I wouldn't recommend doing that, it may damage the rear element of your lens.

Comment by Clarky posted on NEED HELP WITH 2x Tele Convertor at 14/01/2010 - 18:05

I have to learn to type faster

Comment by Clarky posted on NEED HELP WITH 2x Tele Convertor at 14/01/2010 - 17:46

I have never owned one of these but I believe with some lenses (wide angle) the rear element will come into contact with the top element of the TC. Which lenses have you tried on it:

Comment by Clarky posted on NEED HELP WITH 2x Tele Convertor at 14/01/2010 - 17:46

Hey I didn't kill that Tyranasaurus, it ran out in front of my spear and I was brought up to never let good meat go to waste. now pass the salt

Comment by Clarky posted on Terrorist threat assessment by country. at 14/01/2010 - 16:44

There was one time we had too initiate "The barbie is cancelled." decree, it was back in the time of the big flood, we couldn't find any wood and Noah wouldn't give us any of his offcuts.

Comment by Clarky posted on Terrorist threat assessment by country. at 14/01/2010 - 16:30

MattMatic wrote:
since the rear element is exposed and could be damaged. You wouldn't want to do that on a current 50mm/f1.4 given their current price! :shock

HTH!
Matt

I overcame the risk of damaging the rear element by cutting a hole in a rear lens cap and glueing a 49mm filter onto it, or attaching a ring flash to it, as shown above. works a treat.

Comment by Clarky posted on HELP.....Kenko Extension Tubes or similar....? at 13/01/2010 - 13:49

Anvh wrote:
The TC would do the trick as well, a 2x would double you magnification.

You can also reverse mount your 50mm lens ontop of the 70mm macro, you'll get a 1,4x magnification.
If you can get a cheap 28mm from ebay then you're looking at 2,5x mag.
The good thing is you would still have full control over your lens and it's cheaper.

The 28mm is ok if you reverse it directly too the body but not so good for reverse stacking onto another lens, it vignetts very badly.

The 50mm reversed stacked onto your 70mm will be your best option IMO, A 1,4 magnification is plenty.

Comment by Clarky posted on HELP.....Kenko Extension Tubes or similar....? at 13/01/2010 - 12:06

simonarthurs wrote:
Can anyone help with some advice? I'm trying to increase my macro lens to larger than 1:1 ratio

I've got a sigma 70mm macro lens and I was hoping to get some fully automatic extension tubes with the full contacts to allow aperture control (???) and AF (AF being less of an issue with macro work)

My sigma lens is a digital lens so I cannot control the aperture manually

I bought the following on ebay for £12 in order to mess around (fine on my manual 50m lens) 12mm, 20mm and 36mm TUBES APK TRIPLUS BRAND...or am I missing a trick?

Does anyone know where I might be able to get the Kenko extension tube set as I've not been able to find them anywhere? or can anyone suggest an alternative brand that will allow me to operate the sigma macro lens gaining control over aperture? to achieve larger than the 1:1 the macro lens will already produce?

does anyone know if a teleconverter would be an alternative?

any help or advice would be appreciated....

Oh and happy new year to all pentax users! best wishes for 2010

I notice you have a 50mm pentax in your sig, you can also try reversing that onto your sigma 70mm for some super closeup shots, a very cheap alternative, all you need is an adapter ring to connect the two. I regularly use my 77mm ltd with the 43mm ltd reversed onto it.
You can still control the aperture from the camera body and also from the reversed lens, but I generally leave it wide open.

Heres a shot of it with ring flash attached
[IMG]http://i184.photobucket.com/albums/x261/ClarkyinAus/_IGP1716.jpg[/IMG]

Comment by Clarky posted on HELP.....Kenko Extension Tubes or similar....? at 13/01/2010 - 02:09

I have just purchased an FA 31mm, I had a gap between my 30mm K 2.8 and my DA 35mm macro that I needed to fill. Thats my excuse and i'm sticking too it.

Comment by Clarky posted on Should I ? at 12/01/2010 - 18:11

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Clarky

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