Poll Time! Will you buy the R Locked

Don Lacy wrote:

RubberDials wrote:

Don Lacy wrote:

RubberDials wrote:

Don, I'm not sure where you got this idea from but the A7III AF is definitely 'pro level' and is better than the 5Dmk4's AF.

In the field shooting next to photographers I respect who have many years experience with Canon and now shoot Sony where do you get yours.

"the fact that you could literally swap a Canon 1DX II for an a7 III and still get a similar or better hit-rate at an action event is unprecedented."

So you have no first hand experience with a 1DXMKII or 5DMKIV or for that matter an A7 nor have you shot in the field with these cameras nor know or talk to other photographers who have years of experience shooting action especially BIF.

https://www.dpreview.com/reviews/sony-a7-iii-review/11

I was very courteous to you as we've spoken before and I've praised your work but I'll know not to bother in future.

I should not have used that last statement I should have worded it in a manner that was challenging or disparaging I apologize for that.

Don Lacy wrote:

RubberDials wrote:

I was very courteous to you as we've spoken before and I've praised your work but I'll know not to bother in future.

I should not have used that last statement I should have worded it in a manner that was challenging or disparaging I apologize for that.

That's very gracious of you Don, thank you.

When comparing the technical aspects of cameras it is impossible to prove anything by exchanging anecdotes or personal experiences as anecdotal experience is unquantifiable and incomparable. You need to compare samples from objective testing under control, which is handily provided for you by this website.

DPR AF testing is better then most but no where near comprehensive so I will always take the word of actual photographers who shot these cameras everyday putting thousands of frames through them. We will have to disagree on this I am of the opinion that 90% of reviewers really do not know what they are talking about when it comes to things that can't be measured on a chart and even then they over emphasize small differences that 99% of photographers will never see.

I agree with you in principle and DPR's testing of pro gear does fall short from time to time in ways that are visible even if you don't have hands on experience. For example they managed to produce two articles and a film about the Sony 400/2.8, none of which gave as much indication of the quality of the lens as Gustav's gallery of five shots in the Sony forum. https://www.dpreview.com/forums/thread/4304633

Some review sites are guilty of testing mirrorless AF as if it was DSLR AF, not taking on board differences in the systems such as mirrorless focussing points being much smaller, so centre spot focussing on a DSLR is actually the same as flexible spot focussing on a mirrorless, not centre spot focussing, which will give you a point too small to track a subject. Dpreview understands this.

The quote is from the A7III review on this site by the senior technical editor. I included it because it immediately refutes your claim that the A7III AF is not at 'pro level'. There's much more about the competence of the AF of the A7III in the review. It is basically the best AF system on the market outside the 1DXII/D5/A9 triumvirate.

Well since I use the those cameras as the bench mark it does not have a pro level AF that does not mean it does not have a very good AF or that 90% pf photographers will ever notice the difference so maybe I am now guilty of over emphasizing something that is is irrelevant to most photographers.

This is marketing BS, sorry. Don, surely you're old enough to remember that lenses like the 85/1.2 and the 50/1.2 appeared originally on FD mount which has a much smaller throat diameter and crucially a very long flange distance.

If the bazooka-sized Canon 28-70/2 is a big seller Sony will make an equivalent straight away.

Based that statement off of the head of Sigma's interview on the issues for designing high end glass for the E mount maybe he actually knows more then you.

He may know more than me but I'm not arguing with him, I'm arguing with you – and your knowledge is the bottleneck to this discussion.

Again when reading this today I was unnecessarily combative and should not have included the snide comment, sorry we are only talking about cameras not politics no need for me going there.

I appreciate your comments. All's good.

Since you haven't provided a link to the person you're basing your argument on and since you haven't elaborated why Sony can't make a 50/1.2 or a 28-70/2 we'll just have to assume that you don't know of any reason and are just regurgitating the current marketing BS.

Sony has filed a patent for a 28-70/2 lens incidentally. https://photorumors.com/2016/01/28/sony-fe-28-70mm-f2-lens-patent/