john Clinch

john Clinch

Lives in United Kingdom Milton Keynes, United Kingdom
Works as a Teacher of physics
Joined on May 23, 2005

Comments

Total: 41, showing: 1 – 20
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On Fujifilm announces 1.4x teleconverter for X100/X100S news story (65 comments in total)

Well if you've got a full frame DSLR and fast 50mm lens then sure just use that

But not everyone has

Plus know one is making any one buy it

Oh and to the "why not crop lobby. Well of course you can. But you still can with the converter on, only more so. Oh and you have less depth of field as well with the converter

But its Dpreview so we've got to hate

Direct link | Posted on Apr 16, 2014 at 13:45 UTC as 9th comment
On Sony Cyber-shot DSC-RX10 Review preview (423 comments in total)
In reply to:

rfsIII: In my opinion DPReveiw is leading readers down a dangerous dead-end path with all this "equivalent aperture range."
The whole silly business started with a post on one photographer's website and has now grown into a weird cult of people who are angry all the time about f/stops and love to argue with anyone who doesn't profess unwavering faith in their precepts.
And worse, it completely misses the point of the exposure triangle. To get more out of your camera you need to understand the relationship between f-stop, shutter speed, and ISO but this new religion you people have adopted throws that out and makes readers think that the surface area of the sensor is in some undefined way related. Converts go on and on about twice or four or 16 times as much light hitting a larger sensor than a smaller one as though that matters.
Unless you are dealing with bellows or other real exposure-changing variables, from an exposure point of view it doesn't matter what size sensor you use.

yes equivalent aperture is a mess. It really confuses people and I'm sure it was pushed forward by some one who wanted to sell more large sensor cameras. ISO performance is not proportional to sensor area. What we need is the review sites to figure out whether the faster lenses compensates for the smaller sensor. Looks like it doesn't for the f4 lens but does for the f5.6. But telling us that would make more sense than loads than a whole load of equivalent waffle

Oh and no the digital era is no excuse for all this equivalent idea. In the film era crop factor really was proportional to sensor performance as they all use the same sensor, just in different sizes. You couldn't say 400 ASA was fine. It was poor in 110 film but excellent in an 8 by 10 plate camera

Direct link | Posted on Mar 21, 2014 at 20:40 UTC
On Sony Cyber-shot DSC-RX10 Review preview (423 comments in total)
In reply to:

bawbaw: Best thing to do if considering an rx10 ... buy an rx100. Unless video is your 100% primary concern ... it does 99.9% of the same thing. Has the same sensor. A slightly better lens if you go by the comparison on this review on raw.

Big thing is .. it goes in your pocket.

I shoot a Leica M9 normally.. although.. what do I grab most of the time due to space ... my rx100. It's that annoyingly good.

Oh and you can still get them new for £300 if you hunt about as they don't have wifi BOO HOOO.

Unless you want an eye level view finder

or a faster longer lens

Direct link | Posted on Mar 21, 2014 at 20:24 UTC
On Sony Cyber-shot DSC-RX10 Review preview (423 comments in total)

Today on the 21 march 2014 days after the review was launched the cost comparison is wrong. Well it is in the Uk. The RX 10 is £849 from WEX the A6000 and 18 105 f4 is over a £1000.

I don't really blame dpreview. But i suggest they leave cost comparisons up to us as prices change so fast. More so for cameras than lenses

Direct link | Posted on Mar 21, 2014 at 20:15 UTC as 64th comment | 2 replies
On Two photographers re-imagine city potholes news story (147 comments in total)

I enjoyed these. Made me feel even better when I read all the grumpy comments!!

Direct link | Posted on Mar 2, 2014 at 10:37 UTC as 32nd comment
On Sony NEX-6 Review preview (28 comments in total)
In reply to:

coolboy: Hi!
Can anyone please explain me if I can add an PANASONIC 20mm f1.7 II pancake to this camera? Is it fully compatible?

Thanks

No that lens is microfour thirds only. This only takes NEX lenses. That is Sony E-mount

Direct link | Posted on Nov 30, 2013 at 13:24 UTC
On Nikon Df preview (2817 comments in total)
In reply to:

molnarcs: This forum has become unreadable. It's basically a troll fest, with overwhelming negativity. Any attempt at intelligent discussion is drowned in the noise. There is a more intelligent discussion of the new Nikon at Canonrumors (!) than here.

I wish dpreview had a feature where the user name could link to a portfolio. At least we could see who are actually photographers and who are just coach photographers - looks like the majority are the latter :-/

I agree that people do get negative and thats a shame

I frequently check to see what people have in their galleries. If they've done any challenges and if their profile has a link to a portfolio.

You don't seem to have any photos? Which makes your comment very strange, You can easily link a portfolio but you don't

Direct link | Posted on Nov 5, 2013 at 10:13 UTC
On Sony Alpha A7 / A7R preview (2381 comments in total)
In reply to:

mgblack74: Wow. Suddenly the boys have turned their attention away from the Canikon twins to the new girl in the room: Sony. Not sure I'd use it for a wedding, but Sony just changed the market. Canikon, your move. The D610 & D5300 doesn't count.

Yes but they had to. The went for the dsky markt and didn't win. Whne you are behind its worth ducking and diving

Direct link | Posted on Oct 16, 2013 at 14:49 UTC
On Sony Alpha A7 / A7R preview (2381 comments in total)
In reply to:

falconeyes: Some day, all enthusiast photo cameras will be like the A7r, i.e., high MP FF mirrorless, more or less. Who will own this market is an open race though.

I think thats true. But I expect that lens leagacy wwill continue to count for a while yet.

Direct link | Posted on Oct 16, 2013 at 14:48 UTC
On Sony Alpha A7 / A7R preview (2381 comments in total)

So $1000 dollars for a nifty 50 is on the pricey side. The mind boggles.

NEX seem to have the problem of value bodies and mad lenses prices

Its nice to see new things but I expect that it will always be beyond me finacial reach

Direct link | Posted on Oct 16, 2013 at 14:46 UTC as 573rd comment | 2 replies
On First Impressions Review: Using the Canon PowerShot G16 article (350 comments in total)
In reply to:

Jim Evidon: The Canon G15 viewfinder is not a serious composition tool, nor do I believe it was ever intended to be so. Only a very few of its competitors offer a "tunnel view" viewfinder. It is a handy thing to have when grabbing a shot and due to it's narrower FOV, you are bound to get the subject. It should be compared to cameras in the same price range that have no viewfinder. Let's face it. The only viewfinders worth a damn come in the Leica M's, The Fuji X100's and the Fuji X-Pro-1 and so forth and they are priced accordingly. So, it is unfair to criticize the G15 for the limitations of it's viewfinder.

For what it is, the G15 (CMOS) is a great little camera. Nice to take along when I don't care to take a premium camera outfit with it's greater bulk. With the right settings, I have made some very good 13 X 19 prints with it.

The GX1 is priced higher than the G15. The G15, and I suppose the new G16 are good cameras for the purposes intended. And no one is forced to use the viewfinder.

My wife has made the excellent point that composing on a screen is not so great once you need reading glasses. A simple tunnel is way better than screen that too blurred to see

Direct link | Posted on Sep 27, 2013 at 11:48 UTC
On B&W (Grayscale) Conversion in GIMP article (2 comments in total)

Thanks I really enjoyed that.

I certainly hadn't seen Value. Lightness and Luminosity defined before

I do have GIMP installed but my methods seem to be work better with 16 bit images or in the RAW converter. So i seem to do almost everything in Lightroom now. Lightroom has a limited tool pallet for this work but I've enjoyed learning to work with it. But it looks like I need to give GIMP another look.....

Direct link | Posted on Feb 9, 2013 at 12:40 UTC as 1st comment | 1 reply

I've skimmed this and I sort of agree with the comments below. LR for my Nikon camera offers a range of camera profiles that quickly achieve good colour off the bat.

Is LR the only one to offer selective adjustment? I use these alot.

I've never been a fan of saying DPREVIEW is biased but I think we should remember DXO is now a business partner

Direct link | Posted on Feb 6, 2013 at 08:16 UTC as 46th comment | 3 replies
On Just Posted: Canon PowerShot SX50 HS Review news story (165 comments in total)
In reply to:

zinedi: Ridiculous zoom with ridiculous speed 3.4 - 6.5,
ridiculous EVF - 202.000 coloured fuzzy spots,
ridiculous tiny sensor crammed with 12 million hopelessly squeezed pixels trying to catch a one foton,
ridiculous massive force of software necessary to fabricate from this hardware mess some digestible image,
ridiculous plastic fuzzy pictures good to watch on the mobile phone display.

Victory of Vanity Fair over good reason, victory of marketing races over science and technology.

Zinedi why do you think you know more about sensor design than those who do it for a living? Why do you repeat tired internet theory that never agrees with reality. I can think of 2 examples where where more pixels has meant more noise. In every other case it means less noise.

This may be a poor camera, I've no idea, but lets try and be accurate in our basic understanding

Direct link | Posted on Jan 16, 2013 at 10:32 UTC
On Just Posted: Canon PowerShot SX50 HS Review news story (165 comments in total)

Great to see a Jeff Keller review. I will really miss Dcresource. Reviews short enough to read but still including things not covered by other review sites. I particular the ideas that high iso performance depends on the lighting.

Its not that useful to know a camera will create great result at iso 3200 under bright lights as in reality you won't be using iso 3200 under bright lights

Direct link | Posted on Jan 16, 2013 at 10:26 UTC as 46th comment

Yes i think a "partnership" with Nikon looks possible A 1" sensor would fit with a 10-30 lens.

Good for NIKON. They can shift more units without weakeng there own brand with a rather gadgety product

Direct link | Posted on Dec 21, 2012 at 14:58 UTC as 7th comment | 1 reply
On Roundup: Enthusiast Zoom Compact Cameras article (417 comments in total)

I think that this is a great little set of reviews. The conclusion seem intelligent and balanced.

I'm glad that the RX100 is not seen to bulldoze all that stand in its way. Its a great camera and may be one day I'll own one. But it would be sad for the industry if no one else could compete or if IQ was seen to trump user experience every time. I think its great that Olympus have got things right again. Ive played withthe previous model and thought it was great

I look forward to DXO mark catching up with some numbers!

Direct link | Posted on Dec 18, 2012 at 22:52 UTC as 129th comment | 1 reply

Is it just one number for a lens?

If it is then I'd say that it will only lead to confusion.

There are just so many factors. Lets imagine two different 70 200 zooms. One constant F4 the other f2.8. How do we compare them.

If we compare them at f4 then a consumer buying the f2.8 might be shocked to find poor performance wide open

If you build in a factor to allow for being soft wide open then almost all fast lenses will score worse

So my conclusion is that simplifying lens ratings will be a waste of time

I have to say I thought the DPreview graphic was good. I particulalry like seeing the crop of the chart. I also like photozone.de and slrgear.com as well

However i never seemed to get to grips with the DXO mark lens reviews

In summary I believe that this will a simplification to far

PS why mega pixels, thats proportional to resolution squared. Why use a hard to understand number

DXO mark seems to be great science over simplified into single score by an ignorant manager

Direct link | Posted on Dec 17, 2012 at 19:22 UTC as 68th comment | 1 reply
On IMG_4607 in the Stormy Weather challenge (1 comment in total)

Would have been well worth levelling the horizon...

Direct link | Posted on Nov 15, 2012 at 16:50 UTC as 1st comment

Believe what you want. But if Kelvin were alive today and was shown nuclear physics he would revise his age of the Earth to billions of years before tea time.

Direct link | Posted on Nov 14, 2012 at 17:29 UTC as 22nd comment | 1 reply
Total: 41, showing: 1 – 20
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