AF Speed Comparison

[habadashery2009]

you should put the lens cap on and press the shutter release half was to see the lens focus from near to infinity and back in order to get an accurate measure of the focus speed of the lens.

[KevinEndow1993]

@kaivanfreak unless youre shooting wildlife in the middle of the day... with a minimum f stop of 4.5 and a fast shutter speed youre shots are gonna be dark. but then youd have to bump up your iso and depending on the camera youre going to have dark grainy shots? i really dont see a good use of this lens.

[KevinEndow1993]

the sigma 120-400 f4.5-5.6 looks like a huge waste of money

[kaivanfreak]

@KevinEndow1993 why? i got on and its a great. and cost the half of canons EF 100-400

[borozonx]

70-30 is slow

[haloavenger]

You're supposed to put the lens cap on to focus it

[Drinapropriatetouch]

@haloavenger No that is only going to make the lens hunt and the lens will behave differently hunting compared to focusing on an object. It goes slower to make it easyer to find the target because the camera thinks its in low light.

[samboo18]

Whats the point of cluttering up the internet with your shithouse videos of your camera. That i think is the question you should be asking yourself

[NoJake]

It's so unfortunate that the front element moves when focusing. What's the point of having IS on a lens if the front element rotates when focusing and you want to use a polarizing filter? None, unless you have 3 hands...

[VenonnFang]

IS means Image stabilization, what does that have to do with a rotating front element?

[NoJake]

Well, you need one hand to hold the body, one to hold the lens, and one to rotate the CP filter (or keep it from rotating) to the right orientation for the shot. Your only option when using a lens like this with a CP filter is to tripod mount, in which case you want to disable IS. You might be able to get away with a monopod, but if I really want to shoot handheld and use a CP, I'm definitely going to get something with is and a static front element.

[VenonnFang]

Just focus and then rotate the filter

[NoJake]

Sure, unless you need AI-Servo for moving objects...

[VenonnFang]

then hold the filter and let the focus ring rotate under it

also, why are you shooting action with a polarizer

[NoJake]

Holding a lens by the filter is not something I want to do or good practice. Makes more sense just to buy a lens w/o a rotating front element.

Why not use a polarizer? I like a darker sky, and especially being able to control the reflection off of the water.

[VenonnFang]

"Holding a lens by the filter is not something I want to do or good practice."

The front element just rotates beneath it, it doesn't hurt the lens at all.

"Makes more sense just to buy a lens w/o a rotating front element."

Well yeah if you can

"Why not use a polarizer? I like a darker sky, and especially being able to control the reflection off of the water."

I specifically said for ACTION shots. Using a polarizer is going to loose you 1.5-2 stops of light, thats stupid for action.

[NoJake]

I never said it hurt the lens, I said it was bad practice.

Sure, I'll get less light. Stupid for action? Hardly, I already have plenty of light for the action shots I'm taking.

Anyway, while I'd love to argue with every troll on the internet, I simply don't have time to keep replying to your posts, so this will be the last reply.

[Drinapropriatetouch]

@VenonnFang And in manual focus?

[scraz51]

Lol owned

[Eagle1337]

@VenonnFang i lol'd.

[s3ller]

bad compaprsion, you need to focus form limit ti limit, from oo to 1m and 1m too oo.

[thetttttttttttt]

you have money

[hamaka]

you have pride

[quickshooter100]

@thetttttttttttt Hardly a bank breaker!!! lol