As some of you will know from my other posts, I purchased a pair of Swarovski EL10X50 earlier this week. I did not go out to buy them, I thought that I would end up with the Zeiss Victory SF 10X42.
I spent a total of 2.5 hours in 2 visits comparing the SW EL 10X42 against EL 10X50 against the Zeiss Victory SF 10X42 at Lakeside Optics, which gave me the opportunity to compare them viewing across Chew Valley Lake, into a wood and at gulls both on the shore and in the air. There was no doubt that the SW EL 10X50 was considerably brighter than the SW EL 10X42. The Zeiss Victory SF 10X42 was somewhere between them. However it was the EL 10X50 that gave me the real wow and this was not a preconceived 'wow'; I was caught totally off guard by this.
Ergonomically, the Zeiss SF is better than the Swarovski in that the weight is further back and it focuses faster. However, given that I have never felt uncomfortable using any non-Zeiss SF binocular, in every day life the ergonomics are not a big issue.
My big concern was the durability of the Zeiss SF in the light of various posts that i have read in the web. In fairness Lakeside Optics told me that, although there were some quality issues with the first production batch of Zeiss SF, there have been no faults with more recent batches. Despite that, I had reservations. SUBJECTIVELY they do not feel as well built as the Swarovski EL and the brightness was not as good as the EL 10X50.
My concern was the weight:
SW EL 10X42 840gm/29.6oz
SW EL 10X50 998gm/35.2oz
SW EL 10X50 heavier than 10X42 by: 158gm/5.6ozs
SW EL 10X50 heavier than 10X42 by: 18.8%
Given that I know 2 ladies well who go birding with EL 10X42's and the fact that i am much stronger than either of them, I reckoned that the weight would not be an issue. This providing that you wear a binocular harness and so it has proven. I have already walked with them 10 miles through hilly country and carrying a backpack as well.
The view through the 10X50's is just incredible.
Rolstone