Alexluu627 wroteJust got my Lee Filter seven5 kit with the circular polarizer today. Had it on my Loxia 21mm f2.8 and its vignetting really badly. I can see it on screen before i even shoot. So whats the work around for this problem?It absolutely does not vignette.Frank,
I just got my Seven5 polarizer today. What a clever design with the rotation twist to lock it in place. It absolutely DOES NOT vignette and I'm very happy with the image quality.
I'm glad I read your post because I was assuming this filter would not would not work with the L21.
One more reason to chose the Loxia 21 vs Batis 18. You would probably have to go with the much bigger Lee classic filters for the Batis.
I will get my Loxia soon in few days. I need a quick check for decentering so I guess gletcherburger-method works? Otherwise it is 300km round trip to the shop.
Got my replacement Loxia 21 after the first one had a crushed box from B&H. This time everything looks good and so far doesn't have any decentering from what I can tell. One interesting data point - comparing the serial numbers, it incremented by about 300 since the last one I got 3 weeks ago. Assuming they shipped one to me as soon as it had available, it seems like Cosina/Zeiss is producing about 300 lenses a month? My guess that's total across their entire lines and not 300 loxias a month.
Geez...a supply of 21mm loxias was about to arrive to Finland on 19th of April. Guess what? It did not arrive. Now they have no idea when. I'm gonna shoot an image of skeleton waiting for Loxia :/
MJKoski wrote:
Geez...a supply of 21mm loxias was about to arrive to Finland on 19th of April. Guess what? It did not arrive. Now they have no idea when. I'm gonna shoot an image of skeleton waiting for Loxia :/
Maybe the shipment went to Norway instead? Suddenly in stock here...
I have been thinking about the Loxia 21, but like a lot my FE 16-35 so haven't pre ordered. Now the Lox is on it's way, inspired by all the positive reviews. Most probably it will replace the zoom.
Indeed, it is going to replace my zoom as well IF I can get one soonish. If not, then I will get 17mm TS-E back. With all the little IQ problems with shifting even with non-shimmed MB adapter that lens is worth the trouble.
Two questions from me:
I read this lens has field curvature. Does that mean the edges will always be out of focus if I focus in the centre at infinity? So how do we deal with that? Is this true for all apertures or only bigger ones?
I hear folks saying that wide lenses do not require AF? Is it a fact or a preference of some guys? And guess this will only be true for landscapes and not for people, right?
I got my Lox 21 today, and have spent some hours now to try it out. The amount of field curvature is very,very low, almost non existent for practical purposes. That goes for infinity focus. It is perfect at more medium and close distances. I guess the trace of field curvature that exists can be avoided by focusing a little beyond infinity (maybe at the hard infinity stop - I have not tried that yet).
I am using the A7II.
The Lox is very easy to focus manually. This lens is a jewel!!
Here's one of my test photos that I took yesterday while testing out my Loxia 21. Very sharp and great picture quality. I did notice that if I focus on the center at say f8 - the corners are not particularly sharp - maybe due to the field curvature. I ran through the tests on seeing if it's decentered and doesn't seem like the case but will certainly need to test for the corners however I only see it if pixel peeping.
Just stick the lens on f8 with the focus mark just to the left of the infinity symbol and you will find everything from around 6' away to infinity is in sharp focus. In fact I have been astounded at the amount of detail this lens shows across the frame. Yes there is some field curvature but with a few days practice the user should come to understand the characteristics of the lens and be able to avoid it.
Asked this before, how to focus to make sure center and edges are equally sharp?
Viramati wrote:
Just stick the lens on f8 with the focus mark just to the left of the infinity symbol and you will find everything from around 6' away to infinity is in sharp focus. In fact I have been astounded at the amount of detail this lens shows across the frame. Yes there is some field curvature but with a few days practice the user should come to understand the characteristics of the lens and be able to avoid it.
saintiwari wrote:
Asked this before, how to focus to make sure center and edges are equally sharp?
Viramati wroteJust stick the lens on f8 with the focus mark just to the left of the infinity symbol and you will find everything from around 6' away to infinity is in sharp focus. In fact I have been astounded at the amount of detail this lens shows across the frame. Yes there is some field curvature but with a few days practice the user should come to understand the characteristics of the lens and be able to avoid it.
Infinity focus on mine is right before the hard stop in the centre, for the edges it is on the hard stop. Focusing somewhere in-between and closing down to f/5.6-8 brings the whole frame in focus.