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View Full Version : A macro lens and a 1.4TC

swag72
16-08-2009, 07:58
I am on a quest now to find something else that I can add to the macro lens to get me closer and better.

I have extension tubes and a Raynox already. When I was out last weekend there was a guy I was talking to with a Nikon who swore by the Kenko 1.4 TC he'd added to his lens. Not 100% sure if he had a macro lens or not to be honest.

So to all you out there - What would a 1.4TC do on the end of a 100mm macro?

Common sense tells me it would make my lens a 140mm - So would that decrease the min focussing distance? Make the bugs bigger on the sensor? Or would it do nothing?

Thanks for your help :thumbs:
Davec223
16-08-2009, 08:18
Iirc it will mate your lens 14omm plus increase the magnification to 1.4, adumong that your macro lens is 1:1 to start with. I can not remember what it will do to your min focusing distance.
arclight
16-08-2009, 08:20
Not do a whole lot of good for the image quality.
If you want to get in closer why not get more extn tubes or a bellows. These don't degrade optical quality.
swag72
16-08-2009, 08:29
If you want to get in closer why not get more extn tubes or a bellows. These don't degrade optical quality.

That's just the point - I don't really want to have to get in closer than I am already doing!! My other option is my 100-400 which is working well and I add 36mm of extension tubes onto it to lower the min focusing distance from 1.8m.

I guess that I am trying to achieve something in between the 2 - Scrambling in the undergrowth with the 100mm macro or standing about 5 ft away with the 100-400!! They both thave their advantages of course.
Canon Bob
16-08-2009, 08:30
The 1.4x will increase your magnification by 1.4 but the minimum focus distance will remain the same...that's a function of the lens alone.

Bob
puddleduck
16-08-2009, 08:31
The Kenko should work fine - I shoot Nikon, so I can't help with Canon specifics, but my Kenko 1.4x TC works on all my lens.

Your mimimum working distance will stay the same, but you'll get a 140% increase in size.

As you'll be stopping down for more Depth of Field, you won't see any noticable optical problems with the combo.
swag72
16-08-2009, 08:33
Any serious isues with IQ degradation?
puddleduck
16-08-2009, 08:33
Any serious isues with IQ degradation?

Nope.
Canon Bob
16-08-2009, 08:35
....As you'll be stopping down for more Depth of Field....

You may need to read up how to do this. :p
swag72
16-08-2009, 08:37
You may need to read up how to do this. :p

Based on? ......................:D ................. A stupid comment from yesterday? ...................:D ................I'll pm you if I'm stuck :razz:
puddleduck
16-08-2009, 08:38
You may need to read up how to do this. :p

You've lost me on that one.. you quoted me so I assume you think I said something daft... care to share?
swag72
16-08-2009, 08:42
You've lost me on that one.. you quoted me so I assume you think I said something daft... care to share?


I could be wrong, but I think that is directed at me and some totally stupid post I made yesterday. After what I said, Bob is expecting me to have trouble 'stopping down'
fracster
16-08-2009, 08:42
You've lost me on that one.. you quoted me so I assume you think I said something daft... care to share?

Something to do with Saras` aperture adjustment whilst in shutter priority mode Andy.
swag72
16-08-2009, 08:44
Something to do with Saras` aperture adjustment whilst in shutter priority mode Andy.

Yes ..................... Bored now!!!! :bonk:
Canon Bob
16-08-2009, 08:44
You've lost me on that one.. you quoted me so I assume you think I said something daft... care to share?

http://www.talkphotography.co.uk/forums/showthread.php?t=157006

Bob
swag72
16-08-2009, 08:45
http://www.talkphotography.co.uk/forums/showthread.php?t=157006

Bob

Noooooooooo!!!

Damn - All I wanted to know about was a TC on a macro lens!!!!!!
fracster
16-08-2009, 08:49
Yes ..................... Bored now!!!! :bonk:

Yes,indeed,but I don`t think it will die quickly.........:lol:

And I was chivalrous enough not to take the pee yesterday...........:D
swag72
16-08-2009, 08:52
And I was chivalrous enough not to take the pee yesterday...........:D

I am guessing that on a scale from -1 to -10 you're not feeling particulary chivalrous today?:D



Spare a thought for the little lady :amstupid:
fracster
16-08-2009, 08:55
We all make cockups Sara,that was yours, no point beating the hell out of it though.

Time to bring the shutter down on the whole episode....;)