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Messages - curby

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1
Third Party Manufacturers / Re: Rokinon Launches 135mm t/2.2 Cine Lens
« on: January 12, 2015, 02:05:26 PM »
So B&H is just going to carry nothing but shameless clone products now?  First Yongnuo and now this.

http://www.canonrumors.com/2015/01/samyang-launches-135mm-f2-lens/

(that was a joke)

2
Pricewatch Deals / Re: B&H Photo Nows Carries Yongnuo Products
« on: January 10, 2015, 01:38:52 PM »
By choosing a generic product, please don't expect new advancements in DSLR technology by Canon, or for new lenses to come out.  R&D budgets come out of sales dollars.

Sure you need capital.  You also need a drive to innovate, and that often comes out of competition.  People are now strongly considering Tamron's and Sigma's supertele zooms over first party options.  They are often choosing Sigma's amazing recent fast primes and fast zooms.  Now Yongnuo's eating them from below with cheaper flashes and lenses.  I'm not trying to be a wet blanket, but this is the reality of the market which illustrates areas where Canon needs to improve to stay relevant.  (They've addressed the first area with their recent 100-400 II.)

I still buy Canon lenses, but only because I see benefits in the specific models that I buy.  If I were considering paying 40% more for my 50mm, there better be a reason other than the Canon badge.  If there is, great!  If there isn't, Canon's got work to do.

3
Pricewatch Deals / Re: B&H Photo Nows Carries Yongnuo Products
« on: January 09, 2015, 06:53:12 PM »
I do think the fact that they are clearly knocking off these lenses is a knock on their reputation.

Disclaimer: I don't have any Yongnuo stuff and aren't looking at getting any.

If they can make the same product with better optical (if not overall) quality and for less, I'd call that a knock on Canon.  Coming up with new designs is great, but improving upon existing designs also pushes the industry forward. 

4
Lenses / Re: Introducing the Canon EF 100-400 f/4.5-5.6L IS II
« on: January 06, 2015, 11:06:07 AM »
As I keep telling people, the old one was very good optically, but only under ideal conditions (IS off or stopped down a stop).  The new one seems to be massively better under regular high stress conditions (wide oopen with the IS in, and in resisting flare and CA.

I think those ideal conditions must also include using a full frame sensor with relatively large subsensors.  I was reading another thread here yesterday that discussed how high density sensors put more stringent requirements on lenses.  Something tells me that the first version's proponents were more likely using full frame bodies with it than crop bodies.*  If the new version also excels on crop bodies, then that in itself is a big improvement.

* I'm a newbie, so of course there could be another explanation.  But quality reports on the first version are unarguably widely varying.  It's likely that Canon had silently been improving the design and tolerances over the decade+ span of the first version.  It's possible that there was a lot of sample variation.  But it could also be that those factors were at times combined with sensors of varying pickiness.  So ultimately, the optical benefit of the new design might not be that it's improving the best samples, but rather that it's decreasing sample variation (so they're all the "best" ones) and thereby offering more consistently positive performance even on dense sensors. 

5
@DanoPhoto do you remember the title of the post and/or the subforum it was in?  I wouldn't mind doing some searching but I don't know what to search for.  Thanks!

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Lenses / Re: Introducing the Canon EF 100-400 f/4.5-5.6L IS II
« on: December 19, 2014, 02:29:43 AM »
I think apart from a rotating zoom (to which people seem to have mixed feelings) the usability with the TCs as confirmed by the MTFs, a reliable and more powerful IS, along with the much improved IQ is a sufficiently good reason for the widespread welcome this lens is getting.

Seems like the only thing missing is the much improved IQ.  Roger's initial, cursory tests over at the rental place indicate it's only around 4% sharper on average.  Of course there are other IQ considerations like flare, CA, distortion, contrast, color reproduction, etc., but 4% better sharpness isn't exactly a slam dunk.   ???

To be clear, I'm looking forward to getting this guy and I want to love the heck out of every aspect of it.  But 4% pales in comparison to the 40% improvement of the 400 DO II over its predecessor.

7
Thanks for the pics, folks.  Seems like you could even keep the thumbwheel and the piece with all the lugs and four screws ... just undo the screws and put the (anticipated) replacement foot on.  If there's threadlock involved you'd have to be careful not to damage the screws while loosening them.

A bit offtopic, but does anyone know what the maximum diameter of the lens hood is?

8
All the more reason for someone to step up and actually make an aftermarket replacement.  They can even fix the wobbling of the standard foot mentioned in this thread (and in the lens instruction manual).

East Wind Photography mentioned that you can add a second screw.  If this means that the standard foot actually has two holes for screws, then that's even better than an anti-twist flange, as the plate's bolted to the foot in two locations.

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Software & Accessories / Re: Easy-access photo backpack?
« on: December 17, 2014, 09:54:28 PM »
Alrighty, I think I've about made up my mind.  While rear panel access has its benefits and a lot of proponents here, I think the side access style fits my needs better at this time.  I've found the following "double side access" bags:

Fstop Kenti
Lowepro Protactic 350 (450 etc.)
Manfrotto 3N1 25 (etc., formerly Kata)
Tamrac Evolution 8 (etc.)
Vivitar DKS 20 (etc.)
Chrome Niko technically counts but there's only a single set of zipper pulls so it doesn't actually give quick access to either side.

If no one knows of other competitors (double side access camera backpacks in roughly this size class), I'm going to pick up a Kenti early next year. I'm just waiting to see if they offer a holiday discount or something.  :P

Anyway, thanks for all the thoughts and suggestions!

10
Just out of curiosity, can anyone with the lens unscrew the foot and take a shot of the mating surfaces of the foot and the collar?  I'm wondering how they interlock, etc.

More generally, it's a bit of a shame that the stock foot is ramped/curved in the back.  A flat profile would allow the use of longer QR plates with antitwist "lips" to be oriented in either direction.

Getting a little offtopic, I would be surprised if Canon wanted to get into the QR plate/clamp world.  It seems like further fragmentation that wouldn't be of much use to customers or to them, in a niche that they don't have much current interest in.  I mean Canon doesn't even show their own tripods in their product photos: http://shop.usa.canon.com/shop/en/catalog/product-accessories/eos-digital-slr-camera-accessories/eos-tripods-other-accessories/eos-rain-cover-medium-erc-e4m

I'd much rather them work on sensor tech than on support products!

11
I found two replacement feet, both for the 400/600/800mm lenses.  Hopefully they can extend the range!

12
It's great to know who makes generic plates, but who else does decent lens-specific replacement feet with integrated ArcaSwiss rails?  Being lighter, more compact, and directly attached to the collar could be great.

13
I asked Kirk and RRS about this.  Neither have a custom foot replacement with integrated rails ready yet, and they likely wouldn't tell you about future products anyway.  Hopefully someone will make one though, but the lens is brand new so it may take some time.

For now, you'll have to (1) get a generic lens plate and (2) badger them to make a custom foot for the lens.  The more demand they see, the more likely it is that they'll make one.

BTW are there other companies like Kirk and RRS that make high quality replacement feet?  We could request the same of them.  :P

14
Software & Accessories / Re: Easy-access photo backpack?
« on: December 12, 2014, 06:29:48 PM »
Tons of great ideas and discussion.  Experience-based impressions with the Kenti (or any of the bags mentioned in this thread) are much appreciated. Thanks, everyone!

Perhaps I should have mentioned, but additional (even separate) storage for non-photo gear would actually be a benefit for me.  That's one of the reasons I've been looking at a lot of camping/hiking style packs, since they're built around that use case.  I'm glad that bags designed more specifically for photo gear exist, and I might get one and store non-photo gear in the main padded compartment, but a split design may work better for my needs depending on the design.

From Lowepro, the Protactic 350 and 450 look like possibilities due to the many access options.  The tacticool appearance is a bit unfortunate, but at least they don't totally look like your typical boxy camera bag.

@coz, re: front camera harness, I'm a Peak Design user, and I have their attachment anchors, clips, and leashes.  I'll likely be doing what you suggest, but with their gear.  Good point though!

Lastly, I just realized that when I don't have my laptop in a laptop sleeve, I can always use it for collapsed reflectors/diffusers.  Dumb!  :-X

Edit: This Thule bag seems closer to what I'm going for.  Definitely rocking the hipster/urbanite vibe here! :P

http://www.thule.com/en-us/us/products/sleeves-and-cases/camera-bags-and-cases/camera-backpacks/thule-covert-dslr-rolltop-backpack-_-tl_85854231190

EDIT2: Can't trust their measurements though.  Apparently their Perspectiv Daypack has a larger interior dimension than exterior dimension, and Perspectiv Backpack has zero-thickness walls (inside = outside).

15
Software & Accessories / Re: Easy-access photo backpack?
« on: December 12, 2014, 12:21:58 PM »
Wow, the wolfskin looks like it's very well designed.  A few concerns: (1) they don't seem to sell in the US, so buying it and getting support for it (e.g. warranty repairs) may be difficult (2) it's bigger than what I need (3) there's nothing stopping the zipper from opening too far when all you need is side access.

Thanks for the insights, barracuda!

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