12-02-2010, 11:10 AM
According to me lenstest in lenstip, dpreview and photozone are good.
If you have general mathematics and physics knowledge you can read and interpret their results.
I cannot judge remarks made by lenstip because I don’t know what is inside of Imatest softwate. In theory if you know the input signal you can analyze the signal beyond Nyquist frequency because you know where the aliases appears in frequency domain.
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I’d like to share my photo experiance during the last years.
1. canon 400d + Tamron 17-50 – delivers biting sharp images. The RAW images accept only small sharpening
2. canon 400d + sigma 10-20 – corners at 10m are not sharp, but with small high pass sharpening technique I can bring all small details back.
3. canon 50d + tamron 17-50 – RAW pixel sharpens is not as (1) but with small amount of high pass sharpening the details of 15MP sensor are back again.
4. canon 50d + sigma 10-20 – same as (3) only requires double high pass sharpening techniques.
At the end of the days. I choose my lenses according to
1. Flare resistance
2. Price
3. AF performance and MF handling
4. Durability
5. Sharpness – however there are few lenses with good (1)(2)(3)(4) and bad (5)
It is good to mention that I always use tripod and bracketing for my landscape shoots.
I don’t care about about such fuzzy parameter - lens rendition. Good lens with (1)(2)(3)(4)and (5) can rander perfectly only with few seconds photoshop work?
What other think about it.
Miro
PS : It is winter time. Less photography outside and longer chat session :-)
If you have general mathematics and physics knowledge you can read and interpret their results.
I cannot judge remarks made by lenstip because I don’t know what is inside of Imatest softwate. In theory if you know the input signal you can analyze the signal beyond Nyquist frequency because you know where the aliases appears in frequency domain.
==============================
I’d like to share my photo experiance during the last years.
1. canon 400d + Tamron 17-50 – delivers biting sharp images. The RAW images accept only small sharpening
2. canon 400d + sigma 10-20 – corners at 10m are not sharp, but with small high pass sharpening technique I can bring all small details back.
3. canon 50d + tamron 17-50 – RAW pixel sharpens is not as (1) but with small amount of high pass sharpening the details of 15MP sensor are back again.
4. canon 50d + sigma 10-20 – same as (3) only requires double high pass sharpening techniques.
At the end of the days. I choose my lenses according to
1. Flare resistance
2. Price
3. AF performance and MF handling
4. Durability
5. Sharpness – however there are few lenses with good (1)(2)(3)(4) and bad (5)
It is good to mention that I always use tripod and bracketing for my landscape shoots.
I don’t care about about such fuzzy parameter - lens rendition. Good lens with (1)(2)(3)(4)and (5) can rander perfectly only with few seconds photoshop work?
What other think about it.
Miro
PS : It is winter time. Less photography outside and longer chat session :-)