Adapting sigma 18-35 art to xt2
Re: Adapting sigma 18-35 art to xt2
Lukedriftwood wrote:
JoshDubya wrote:
Hi Okwy,
looks like there were a lot of replies, and you've made the decision to stay with your Nikon set up already, but hope this makes you feel better about your decision:
the Sigma f1.8 is an APS-C lens, which if you convert to 35mm or full frame terms, is also around f2.7. (1.5x f1.8 = f2.7). The "equivalent focal range" is 27mm - 52.5mm.
So you are not gaining much for low light if you went to the Sigma option, but you would lose autofocus, a lot of zoom range, and some money.
I have to correct you on the low light part, an f/1.8 lens is f/1.8 regardless if it's mounted on MF or FF or APS-C or M4/3 or 1". The light gathering ability is the same. The f/2.7 equivalent you mentioned only applies to DOF.
I was under this impression also before I spent (too) many hours researching both sides of this debate. Basically, the same f stop for different formats will give the same light intensity per square inch, but different total light.
https://www.dpreview.com/articles/2666934640/what-is-equivalence-and-why-should-i-care/2
I really hope this doesn't start yet another debate about sensor sizes and which is better ... please...
Fujifilm X-T20
Fujifilm XF 35mm F1.4 R
Fujifilm XF 18-55mm F2.8-4 R LM OIS
Fujifilm XF 55-200mm F3.5-4.8 R LM OIS
Fujifilm XF 27mm F2.8
+2 more
|
Post
(hide subjects)
|
Posted by
|
When
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
1 |
|
|
|
May 18, 2017
|
4 |
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 18, 2017
|
|
|
|
|
May 19, 2017
|
|
|
|
|
May 19, 2017
|
|
|
|
|
May 19, 2017
|
|
|
|
|
May 19, 2017
|
|
|
|
|
May 19, 2017
|
|
|
|
|
May 19, 2017
|
2 |
|
|
|
May 19, 2017
|
|
Keyboard shortcuts:
FForum
PPrevious
NNext
WNext unread
UUpvote
SSubscribe
RReply
QQuote
BBookmark
MMy threads
Color scheme?
Blue /
Yellow
We're Noct messing around with this review.
Adobe Photoshop and Lightroom impress in a lot of ways, but their noise reduction lags the competition and their lens corrections lack a real-world basis. DxO PureRAW 3 aims to come to their rescue without totally reinventing your workflow!
The Sony ZV-E1 is the company's latest vlogging-focused camera: a full-frame mirrorless camera based the FX3/a7S III sensor, aimed at YouTubers and 'creators' looking to go pro.
The Sony ZV-E1 is a full frame camera targeting YouTubers. Chris and Jordan are Youtubers, what do they think?
Fujifilm's X-H2 is a high-resolution stills and video camera, that sits alongside the high-speed X-H2S at the pinnacle of the company's range of X-mount APS-C mirrorless cameras. We dug into what it does and what it means.
Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder.
There are a lot of photo/video cameras that have found a role as B-cameras on professional film productions or even A-cameras for amateur and independent productions. We've combed through the options and selected our two favorite cameras in this class.
What’s the best camera for around $2000? These capable cameras should be solid and well-built, have both the speed and focus to capture fast action and offer professional-level image quality. In this buying guide we’ve rounded up all the current interchangeable lens cameras costing around $2000 and recommended the best.
Family moments are precious and sometimes you want to capture that time spent with loved ones or friends in better quality than your phone can manage. We've selected a group of cameras that are easy to keep with you, and that can adapt to take photos wherever and whenever something memorable happens.
What's the best camera for shooting sports and action? Fast continuous shooting, reliable autofocus and great battery life are just three of the most important factors. In this buying guide we've rounded-up several great cameras for shooting sports and action, and recommended the best.