Ad
Ad
Ad
Pages: « 1 ... 3 4 [5]   Bottom of Page
Print
Author Topic: Art vs. Otus?  (Read 12569 times)
Herbc
Jr. Member
**
Offline Offline

Posts: 90


« Reply #80 on: April 12, 2014, 08:15:20 AM »
ReplyReply

What with the Sony mirrorless offerings being so easy to use, I am VERY reluctant to buy any lens that does not have
f stops - tried to manage the adapter that supposedly allows f stop settings was not satisfactory.  That said, my D800E is still the one that gets the "serious" work.
Logged
MrSmith
Sr. Member
****
Offline Offline

Posts: 855



WWW
« Reply #81 on: April 12, 2014, 08:20:46 AM »
ReplyReply

I'll probably get the sigma in canon mount to use mainly on my A7r. My clients would not be able to tell the difference between images shot on that or the otus and I would rather the money sat in the MrSmith comfort fund than those of Zeiss shareholders.
Logged
Vladimirovich
Sr. Member
****
Offline Offline

Posts: 1320


« Reply #82 on: April 12, 2014, 09:39:57 AM »
ReplyReply

Aircraft, for example, are now built using composites - at least in part.
the real question is - does your camera/lens part using the same quality plastic as that part in "aircraft" or not... the assumption is that it is, but the devil is in the details... it is not a fact, plastics are different, even if you call 2 plastics by the same name (same class) they are not the same
Logged
Theodoros
Sr. Member
****
Offline Offline

Posts: 555


« Reply #83 on: April 12, 2014, 07:26:52 PM »
ReplyReply

I'll probably get the sigma in canon mount to use mainly on my A7r. My clients would not be able to tell the difference between images shot on that or the otus and I would rather the money sat in the MrSmith comfort fund than those of Zeiss shareholders.

Will your "clients" notice any difference at all with any other "standard" lens? ...I doubt it! ...in fact I doubt if "they" care for the existence of a lens rather than its nature...
Logged
MrSmith
Sr. Member
****
Offline Offline

Posts: 855



WWW
« Reply #84 on: April 13, 2014, 02:49:28 AM »
ReplyReply

Possibly if they looked in the corners of images shot with the zoom I'm using that covers 50mm focal length, I don't own a flat field high quality 50mm so the sigma will fill that gap.
Logged
LKaven
Sr. Member
****
Offline Offline

Posts: 798


« Reply #85 on: April 13, 2014, 03:17:44 AM »
ReplyReply

Just ordered this new Sigma from B&H with a Nikon mount.

I'll bet this provides a nice boost for your D800E.  Can't wait to see what you do with it on that camera.

So far, the only review I've seen uses the D3x. 

If the lens is that good, I might return to 50-land.
Logged

Theodoros
Sr. Member
****
Offline Offline

Posts: 555


« Reply #86 on: April 13, 2014, 05:02:11 AM »
ReplyReply

I'll bet this provides a nice boost for your D800E.  Can't wait to see what you do with it on that camera.

So far, the only review I've seen uses the D3x. 

If the lens is that good, I might return to 50-land.

In this review http://slrgear.com/reviews/showproduct.php/product/1677/cat/30 they claim that they were told by Sigma that they sacrificed a bit of resolution in favour for contrast... This may mean that on D800/E Otus may appear considerably sharper that the ART, while on a lower resolution camera (like a D3X or Eos 5iii or even 1DX or D4/DF) the Sigma may appear visibly sharper than the Otus (with more micro contrast)... Just a thought for people that use more than one camera to take into account when testing the lens them selfs... An important factor that many reviewers don't take into account when testing a lens and sometimes many of the customers don't pay enough attention either.
Logged
NancyP
Sr. Member
****
Offline Offline

Posts: 815


« Reply #87 on: April 15, 2014, 11:23:54 PM »
ReplyReply

vladimirovich, have you any idea how many different kinds of aluminum alloy there are, and how widely the properties of those alloys vary?  Only certain alloys of aluminum are suitable for aircraft structural components - if you use other aluminum alloys, the plane is likely to break up into pieces. "Plastic" is as variable.

I for one am happy to use a good lens or a good camera even if it has plastic components  the weight savings can be significant, and this can translate to less user fatigue. I shoot with a Canon 6D, and it performs to specifications. No, it isn't as sturdy as the 1D series. I am not taking the thing into war zones, though. It is Good Enough For Me. (At least, I preferred to buy a less expensive SLR and spend the difference on a really nice used lens for landscape, Zeiss 21mm f/2.Cool.

I am waiting for the Sigma 50mm f/1.4 Art to show up in local shops. That will space out the expenditure a bit.
Logged
dreed
Sr. Member
****
Offline Offline

Posts: 1223


« Reply #88 on: April 16, 2014, 09:45:08 AM »
ReplyReply

...
Canon non exotic primes higher up on the list than they should be(especially the canon 50 f 1.4).
...

My one of these needed to be repaired and when I took it in for service even the receptionist could tell exactly what was wrong with it when I handed it to her and was able to pull a line item from their service catalogue for costing without a technician looking at it.

Canon offer a 1 year warranty for all of their lenses for "defective parts or a defective Product."
Sigma offer:
"Beginning July 1, 2013, all brand new Sigma Products purchased from authorized Sigma dealers are covered under the 1 year America warranty (North and South America) and U.S.A. extended warranties for a period of four (4) years against defects in manufacturing and workmanship only."

So Canon will stand by their product for one year, Sigma four years.
Logged
Misirlou
Sr. Member
****
Offline Offline

Posts: 626


WWW
« Reply #89 on: April 16, 2014, 09:40:17 PM »
ReplyReply

My one of these needed to be repaired and when I took it in for service even the receptionist could tell exactly what was wrong with it when I handed it to her and was able to pull a line item from their service catalogue for costing without a technician looking at it.

Same thing happened to me. That lens must fail in a very predictable way. In their defense, mine was 9 years old when it croaked, and the service center had it back to me in about two days.
Logged
LKaven
Sr. Member
****
Offline Offline

Posts: 798


« Reply #90 on: April 17, 2014, 01:23:31 PM »
ReplyReply

The DxO test for the Sigma Art 50 is up at DPR today. 

Try using the comparison tool to compare the Sigma with the Otus.  Though the MTF numbers don't tell the entire story, it does seem that the Sigma beats the Otus off center.  Mind you, this is measured only on the 5DIII, which the test acknowledges is probably the limiting factor for some measurements.  Nevertheless, it is interesting. 
Logged

MatthewCromer
Sr. Member
****
Offline Offline

Posts: 411


« Reply #91 on: April 17, 2014, 01:46:06 PM »
ReplyReply

Quote
Mind you, this is measured only on the 5DIII, which the test acknowledges is probably the limiting factor for some measurements.  Nevertheless, it is interesting.

Why would they test on the 5DIII?!
Logged
LKaven
Sr. Member
****
Offline Offline

Posts: 798


« Reply #92 on: April 17, 2014, 02:19:31 PM »
ReplyReply

Why would they test on the 5DIII?!

Why indeed!  Clearly the point of the Art/Otus is to be prepared for 36MP+ sensor resolutions.
Logged

Theodoros
Sr. Member
****
Offline Offline

Posts: 555


« Reply #93 on: April 17, 2014, 03:46:57 PM »
ReplyReply

Why indeed!  Clearly the point of the Art/Otus is to be prepared for 36MP+ sensor resolutions.
Yet, all known lenses up to now have been tested on lesser resolution cameras... this gives an immediate real comparison of the improvement achieved and suggests that the difference can only be magnified if a higher resolution sensor is used... OTOH, many that are not using a 36mp sensor currently (or others that wouldn't care to get one), may would conclude that such a lens would be a worthless overkill if tested on a higher res. camera than what they use.
Logged
Misirlou
Sr. Member
****
Offline Offline

Posts: 626


WWW
« Reply #94 on: April 17, 2014, 04:02:55 PM »
ReplyReply

Why would they test on the 5DIII?!

Because the first copy they received was in Canon mount, and using an adapter on something like an A7R would introduce a testing variable. I'm sure they'll put one on a Nikon as soon as they get one in that mount.

I could be wrong, but that's my guess.
Logged
NancyP
Sr. Member
****
Offline Offline

Posts: 815


« Reply #95 on: April 17, 2014, 07:25:08 PM »
ReplyReply

right you are, misirilou. Sigma brings out its lenses in order of mount popularity, so Canon is always first, Nikon second, then Sony A and Pentax K and Sigma A make up the third group. Sigma wants to move lots of the lenses in the early days and generate lots of buzz. Rest assured, someone will be slapping that EF-mount 50 1.4 Art on a Sony A7R soon enough and publishing the results.
Logged
Pages: « 1 ... 3 4 [5]   Top of Page
Print
Jump to:  

Ad
Ad
Ad