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11-06-2009, 10:02 PM   #1
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TELEPLUS MC4 Pz-AF TELECONVERTER

Ive had this converter for a couple of years, I got if of ebay.Does anyone use one of these and is Teleplus a good make.
John

11-07-2009, 05:30 PM   #2
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Thanks for looking anyway. I will do a bit more googling for some answers. I t might just probably just a cheapie. Might just list it on ebay.
John

Last edited by campdog; 11-07-2009 at 06:22 PM.
11-08-2009, 02:52 PM   #3
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Hi John

Not sure if it helps but I have a Tamron 1.4 TC with the same part number.

It does give AF function, both on screwdriver and SDM, but the focus reliability and IQ are compromised.

I tend to get a better picture with a crop.
11-08-2009, 11:46 PM   #4
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QuoteOriginally posted by Oggy Quote
Hi John

Not sure if it helps but I have a Tamron 1.4 TC with the same part number.

It does give AF function, both on screwdriver and SDM, but the focus reliability and IQ are compromised.

I tend to get a better picture with a crop.
I have not had a problem with the Tamron and any of my screw drive F2.8 lenses. I have used it extensively for surf photos paired with an FA* 300 F2.8 lens and I have done some sever crops on the resulting images and still had very nice results.

using SDM motors... this TC struggles to lock focus with my 200mm F2.8 but it seems OK with my 50-135

There is a common misconception that teleconverters always have a significant (negative) impact on resulting images. These shots are taken with STACKED teleconverters. This is 300mm F2.8 + 2x +1.4x (Canon mind you) for an equivalent of 840mm F8. I took the resulting image and cropped about 1/3 of the total pixels in both cases to get this




11-09-2009, 05:47 AM   #5
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The Tamron 1.4 AF TC that works on some SDM lenses is highly sort after. I got one for my sigma 100-300 and found it to be better than the sigma 1.4 TC, and I sold the latter.
11-09-2009, 11:37 AM   #6
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QuoteOriginally posted by kunik Quote
There is a common misconception that teleconverters always have a significant (negative) impact on resulting images.
Depends on the specific lens and the specific teleconverter(s) used. But using a basic $100 TC on a basic $200 consumer zoom lenses, it's not a misconeption at all - the results *are* usually not as good as you can get by simply cropping. And cropping doesn't cost you a stop or more of light).

Of course, your image here show that with the right lenses and TC's, it *is* possible to get good results.
11-09-2009, 03:11 PM   #7
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I have to say that I haven't tried it with any of my faster lenses. If the 16-50 was not long enough, I would use the 50-135, if that were not long enough, I would use the 60-250.

I bought it to try with my longer lenses, 60-250, 300 and Sigma 150-500, and I have had little success with it.

What I would say in addition to Marc's comment is that if you use a $100 TC with a $1000 you end up with a $200 lens.
11-09-2009, 05:31 PM   #8
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QuoteOriginally posted by Oggy Quote
I have to say that I haven't tried it with any of my faster lenses. If the 16-50 was not long enough, I would use the 50-135, if that were not long enough, I would use the 60-250.

I bought it to try with my longer lenses, 60-250, 300 and Sigma 150-500, and I have had little success with it.

What I would say in addition to Marc's comment is that if you use a $100 TC with a $1000 you end up with a $200 lens.
I think I share the frustration of a lot of people over the lack of teleconverters available for Pentax... however the Tamron is one of the better available. And having said that it is basically just a $100 TC (although short supply and high demand has driven up the price).

And for a $100 TC it performs quite well. Here is a 100% crop using the tamron TC with a Pentax K10d on a 300mm lens.


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