Quote from: slayer35 on February 23, 2019, 09:00

Hi there ,I own a panasonic g85 and couple panasonic lenses (12-35 and 35-100).I started to upload some photos and videos to istockphoto .As you may now my camera is 16mp , and I want to ask is megapixels so important in stock photography? Do I need to change my camera to a newer one with more megapixes? (forexample a7riii or a7iii).
Thanks ...

Years and years ago when iStock was easily the most successful stock agency they offered pictures in various sizes - from small to medium, to large, extra large etc.  The largest size was XXL and equated to about 21mp.  Sometimes they skewed the search to place an emphasis on those images available at the largest sizes.  This caused many photographers to want to upgrade equipment to at least 21mp (and why the Canon 5Dii was such a big seller).

However life has changed a lot since those days, with the largest share of the buyers market being for electronic delivery (web pages) where such large sizes are simply not necessary.  As web pages change daily what those buyers want is a huge supply of attractive and relevant images but they only need sizes for their web designs.  Yes there is still a market for printed media, billboards, company reports etc but those markets are dwindling.  The newest market is cellphones of course and an increasing need for images just to display on phones and tablets.

So I don't think size matters any more.  And to show how relevant this is, iStock took away their various size options and now offer only a one size download.

If you are an ad agency photographer shooting fashion, advertising etc for the big corporations, then it's still important to deliver maximum size and quality.  But for basic stock photography anything in the 24-36mp area is certainly large enough.  And frankly most high quality starter cameras now come at 24mp.