07-14-2018, 07:56 AM
(This post was last modified: 07-14-2018, 08:01 AM by davidmanze.)
A review is out of the new Sigma A 105mm F1.4 HSM on Lenstip's reveiw site.
If you thought the Nikon 105mm F1.4 is a monster with it's 82m filter, it is now dwarfed by the new Sigma's 105mm with a 105mm front element which weighs in at 1.645 Kgs/ 3.62 lbs!!!
Needless to say everything is record-breaking, with unbelievable sharpness and coma correction wide open..........tested on the Canon EOS 5D Mark III.
(although this is a lens that deserved to be tested on Canon's no excuses 50 Mps sensor!)
........but how big will Sigma lenses become when we get to 100 Mps?
This could be Tamron's opener for something more compact with VC into the bargain!
07-14-2018, 09:57 AM
(This post was last modified: 07-14-2018, 10:07 AM by JJ_SO.)
It not only sounds heavy, but is, yes. Matt Granger's comparison on YouTube is also interesting (not for Canon users though, they have not much of alternatives) and he prefers his Nikkor. While admitting to be biased because he already owns it, his biggest issue wasn't the performance as he saw of both nearly the same IQ. He had troubles with handholding it for an hour or so.
I don't recall to ever have used one lens for a full hour, but the weight can be a deal breaker. But then, the 85/1.4 Art is only 400 grams less and longer. Funnily, the Otus 85/1.4 has the same weight.
At the moment I'm figuring out how to rent both lenses at the same time to compare them for myself. And to find out if for me, who shot most portraits with an 85, the 105 is an option - or even a better option.
Tamron? Well, I tried their 85/1.8. At f/2 it doesn't come close to the Sigma wide open, was my impression. Take it with a grain of salt: I had no chance to focus adjust it, but in a face and at 1/4000 should some parts be in focus...
I think Sigma lenses - at least the Art types - are already capable of 100 MP, but who wants 100 MP in a FF sensor? Even if it's doable - I have doubts it would be practical, as long as ISO and noise performance will not be significantly improved.
07-14-2018, 11:24 AM
(This post was last modified: 07-14-2018, 11:27 AM by davidmanze.)
Yeah, I saw Matts review first........now with Lenstip's technical version we see that maybe Matt had got things wrong when he stated he'd better check which was which and chose the Nikkor as the sharper......
Needless to say I would choose the Nikkor.........
.......the AF 105mm F2.8D micro!......LOL!
Hey, I just saved $2,000 .............Yay!
07-14-2018, 11:36 AM
(This post was last modified: 07-14-2018, 11:36 AM by Brightcolours.)
Every time resolution went up, noise always was ok (except to some extent with the 5DS which was too early for the improved tech). 100mp is not such a big hike over 50mp anyway... Not like the D850 has a noise issue at ISO 400 (or ISO 256)? So even 200mp should be quite ok.
Great that you looked at one new wedding album.
07-14-2018, 12:32 PM
(This post was last modified: 07-14-2018, 12:36 PM by Brightcolours.)
Besides that, nonsensical to claim that 10.2mp somehow equals human vision in any sense. That crappy old Canon even predated my old EOS 450D, and I surely hit the limits of it (12mp 450D) for big-ish prints. And its noise.
About that Sigma: it does render very nicely, and I have not yet seen any evidence of it having similar swirly bokeh tendency as the Nikkor. I probably would like that Sigma a lot, except its bulk of course.
Show me an example where you have taken advantage of more mp.
The answer must be a picture - no endless forum debate